Medical Specialties Commons^™

Mammographic Density And Ageing: A Collaborative Pooled Analysis Of Cross-Sectional Data From 22 Countries Worldwide, Anya Burton, Gertraud Maskarinec, Beatriz Perez-Gomez, Celine Vachon, Hui Miao, Martín Lajous, Ruy López-Ridaura, Megan Rice, Ana Pereira, Maria Luisa Garmendia, Rulla M. Tamimi, Kimberly Bertrand, Ava Kwong, Giske Ursin, Sudhir Vinayak, Rose Ndumia, Shivaani Mariapun

Imaging & Diagnostic Radiology, East Africa

Background:Mammographic density (MD) is one of the strongest breast cancer risk factors. Its age-related characteristics have been studied in women in western countries, but whether these associations apply to women worldwide is not known.

Methods and findings: We examined cross-sectional differences in MD by age and menopausal status in over 11,000 breast-cancer-free women aged 35–85 years, from 40 ethnicity- and location-specific population groups across 22 countries in the International Consortium on Mammographic Density (ICMD). MD was read centrally using a quantitative method (Cumulus) and its square-root metrics were analysed using meta-analysis of group-level estimates and linear regression models of …

Connecting The Brain To Itself Through An Emulation., Mijail D. Serruya

Department of Neurology Faculty Papers

Pilot clinical trials of human patients implanted with devices that can chronically record and stimulate ensembles of hundreds to thousands of individual neurons offer the possibility of expanding the substrate of cognition. Parallel trains of firing rate activity can be delivered in real-time to an array of intermediate external modules that in turn can trigger parallel trains of stimulation back into the brain. These modules may be built in software, VLSI firmware, or biological tissue as in vitro culture preparations or in vivo ectopic construct organoids. Arrays of modules can be constructed as early stage whole brain emulators, following canonical …

Congenital Left Ventricle-To-Coronary Sinus Fistula: A Rare Isolated Anomaly Of The Coronary Sinus., Doaa M. Aly, Nikki M. Singh, Sanket Shah

Manuscripts, Articles, Book Chapters and Other Papers

Congenital anomalies of the coronary sinus (CS) are very uncommon. They can occur either in isolation or in association with other congenital heart defects. 1 Among those anomalies, congenital fistulae connecting the left ventricle and the CS represent a very rare entity. Most reported cases of CS fistula generally originate in the right coronary artery or left anterior descending coronary artery system. 2 We describe an extremely rare case of an isolated high-pressure congenital left ventricle–to–CS fistula as an anomaly of the CS in an otherwise asymptomatic child. The initial clinical presentation and follow-up, imaging studies, and plan for management …

Clinical Anatomy Of The Frenulum Of The Oral Vestibule., Joe Iwanaga, Naoshi Takeuchi, Rod J Oskouian, R Shane Tubbs

Articles, Abstracts, and Reports

Introduction The frenula of the oral vestibule include the labial and buccal frenula. Abnormal labial and buccal frenula can affect facial esthetics and oral cavity function by retracting the gingival margin, creating a median diastema, and limiting lip movement. Because of the lack of information on these structures, we aimed to clarify their anatomy. Methods A total of 34 sides from 17 fresh frozen cadaveric Caucasian heads were used in the present study. The specimens were derived from 11 male and 6 female adult cadavers. The relationships between the frenulum of the mucosa and the tissue underneath the mucosa was …

A Phase Ii Randomized Trial Of Observation Versus Stereotactic Ablative Radiation For Oligometastatic Prostate Cancer (Oriole)., Noura Radwan, Ryan Phillips, Ashley Ross, Steven P. Rowe, Michael A. Gorin, Emmanuel S. Antonarakis, Curtiland Deville, Stephen Greco, Samuel Denmeade, Channing Paller, Daniel Y. Song, Maximilian Diehn, Hao Wang, Michael Carducci, Kenneth J. Pienta, Martin G. Pomper, Theodore L. Deweese, Adam Dicker, Mario Eisenberger, Phuoc T. Tran

Department of Radiation Oncology Faculty Papers

BACKGROUND: We describe a randomized, non-blinded Phase II interventional study to assess the safety and efficacy of stereotactic ablative radiotherapy (SABR) for hormone-sensitive oligometastatic prostate adenocarcinoma, and to describe the biology of the oligometastatic state using immunologic, cellular, molecular, and functional imaging correlates. 54 men with oligometastatic prostate adenocarcinoma will be accrued. The primary clinical endpoint will be progression at 6 months from randomization with the hypothesis that SABR to all metastases will forestall progression by disrupting the metastatic process. Secondary clinical endpoints will include local control at 6 months post-SABR, toxicity and quality of life, and androgen deprivation therapy …

The Effects Of C5-Substituted 2,4-Diaminoquinazolines On Selected Transcript Expression In Spinal Muscular Atrophy Cells., Cinsley Gentillon, Andrew J Connell, Ryan W Kirk, Matthew E R Butchbach

Department of Pediatrics Faculty Papers

C5-substituted 2,4-diaminoquinazolines (2,4-DAQs) ameliorate disease severity in SMA mice. It is uncertain, however, that these compounds increase SMN protein levels in vivo even though they were identified as activators of the SMN2 promoter. These compounds also regulate the expression of other transcripts in neuroblastoma cells. In this study, we investigate the mechanism by which the 2,4-DAQs regulate the expression of SMN2 as well as other targets. D156844, D158872, D157161 and D157495 (RG3039) increased SMN2 promoter-driven reporter gene activity by at least 3-fold in NSC-34 cells. These compounds, however, did not significantly increase SMN2 mRNA levels in type II SMA fibroblasts …

Pain And Physical Function In A Socioeconomically Diverse Sample Of Black And White Adults, Angela Sardina

USF Tampa Graduate Theses and Dissertations

Musculoskeletal pain alters physiological function and these changes may be evidenced as early as middle age. Previous research has concluded that middle-aged adults are a high-risk group for chronic pain and report functional limitations similar to older adults. However, few studies have explored the unique individual factors (e.g., sociodemographic, health, and psychosocial characteristics) that may drive the pain experience; and more research is needed that examines the relationships between musculoskeletal pain and physical function, using objective performance measures, in a sample of racially and socioeconomically diverse adults.

Data from the Healthy Aging in Neighborhoods of Diversity across the Life Span …

Deviations From The Expected Relationship Between Serum Fgf23 And Other Markers In Children With Ckd: A Cross-Sectional Study., Daisy Liu, Ana Catalina Alvarez-Elías, Brooke Wile, Vladimir Belostotsky, Guido Filler

Paediatrics Publications

BACKGROUND: High levels of fibroblast growth factor-23 (FGF23) are associated with mortality. In chronic kidney disease (CKD), FGF23 levels rise as renal function declines. We analyzed the contribution of laboratory values to the variance of FGF23 levels in relationship to a curve of expected FGF23 levels for a given GFR.

METHODS: Following approval by the research ethics boards, we measured FGF23, CysC eGFR, creatinine, urea, albumin, calcium, phosphate, vitamin D metabolites, PTH, alkaline phosphatase, CRP, and venous gases in 141 pediatric CKD patients (45, 37, 32, 13 and 14 CKD stages I, II, III, IV, and V, respectively). Data were …

Dach1 Suppresses Breast Cancer As A Negative Regulator Of Cd44., Hanxiao Xu, Shengnan Yu, Xun Yuan, Jing Xiong, Dong Kuang, Richard Pestell, Kongming Wu

Department of Cancer Biology Faculty Papers

Dachshund homolog 1 (DACH1), a key cell fate determination factor, contributes to tumorigenesis, invasion, metastasis of human breast neoplasm. However, the exact molecular mechanisms for the anti-tumor roles of DACH1 in breast carcinoma are still lack of extensive understanding. Herein, we utilized immunohistochemistry (IHC) staining and public microarray data analysis showing that DACH1 was higher in normal breast, low-grade and luminal-type cancer in comparison with breast carcinoma, high-grade and basal-like tumors respectively. Additionally, both correlation analysis of public databases of human breast carcinoma and IHC analysis of mice xenograft tumors demonstrated that DACH1 inversely related to cancer stem cells (CSCs) …

Impaired Right Ventricular Contractile Function In Childhood Obesity And Its Association With Right And Left Ventricular Changes: A Cine Dense Cardiac Magnetic Resonance Study, Linyuan Jing, Arichanah Pulenthiran, Christopher D. Nevius, Abba Mejia-Spiegeler, Jonathan D. Suever, Gregory J. Wehner, H. Lester Kirchner, Christopher M. Haggerty, Brandon K. Fornwalt

Biomedical Engineering Faculty Publications

Background: Pediatric obesity is a growing public health problem, which is associated with increased risk of cardiovascular disease and premature death. Left ventricular (LV) remodeling (increased myocardial mass and thickness) and contractile dysfunction (impaired longitudinal strain) have been documented in obese children, but little attention has been paid to the right ventricle (RV). We hypothesized that obese/overweight children would have evidence of RV remodeling and contractile dysfunction.

Methods: One hundred and three children, ages 8–18 years, were prospectively recruited and underwent cardiovascular magnetic resonance (CMR), including both standard cine imaging and displacement encoding with stimulated echoes (DENSE) imaging, which allowed …

The Validity Of Submaximal Exercise Testing In Obese Women, Gabrielle Ringenberg

Mahurin Honors College Capstone Experience/Thesis Projects

Background: Submaximal exercise tests use heart rate responses to low-to-moderate intensity activity in order to predict cardiorespiratory fitness (VO_2max). Currently used tests may be inappropriate for obese populations as obese women have altered heart rate responses to exercise. The purpose of this project is to test the validity of the Modified Bruce Protocol submaximal treadmill test in obese women. Methods: Normal-weight (NWG) and obese women (OBG) completed the Modified Bruce submaximal treadmill test (to predict VO_2max using previously validated equations) and a maximal graded exercise test on a treadmill using the Standard Bruce Protocol (to obtain an …

Pathologists' Diagnosis Of Invasive Melanoma And Melanocytic Proliferations: Observer Accuracy And Reproducibility Study., Joann G Elmore, Raymond L Barnhill, David E Elder, Gary M Longton, Margaret S Pepe, Lisa M Reisch, Patricia A Carney, Linda J Titus, Heidi D Nelson, Tracy Onega, Anna N A Tosteson, Martin A Weinstock, Stevan R Knezevich, Michael W Piepkorn

Articles, Abstracts, and Reports

No abstract provided.

Abnormal Dendritic Maturation Of Developing Cortical Neurons Exposed To Corticotropin Releasing Hormone (Crh): Insights Into Effects Of Prenatal Adversity?, Megan M. Curran, Curt A. Sandman, Elysia Poggi Davis, Laura M. Glynn, Tallie Z. Baram

Psychology: Faculty Scholarship

Corticotropin releasing hormone (CRH) produced by the hypothalamus initiates the hypothalamic-pituitary-adrenal (HPA) axis, which regulates the body’s stress response. CRH levels typically are undetectable in human plasma, but during pregnancy the primate placenta synthesizes and releases large amounts of CRH into both maternal and fetal circulations. Notably, placental CRH synthesis increases in response to maternal stress signals. There is evidence that human fetal exposure to high concentrations of placental CRH is associated with behavioral consequences during infancy and into childhood, however the direct effects on of the peptide on the human brain are unknown. In this study, we used a …

Resident Reflection: Mrs. C, Rachel Nash, Md

The Medicine Forum

“Make friends with those critical care nurses in the ICU,” my friend from high school and general floor nurse whispered in my ear before the start of my MICU rotation. “They can really save your butt.” This was one of my many goals I set out to achieve during my first month in the intensive care unit as an intern. I wanted to become more comfortable managing very sick patients, get some procedures under my belt, and mostly “survive” the emotionally and physically taxing weeks that were sure to come.

The sign out I received on my 3-patient load suddenly …

Grand Rounds Panel Discussion: Provider Payment Reform: Past, Present, And Future, Neha Bansal Etherington, Md, Shuwei Wang, Md, Debbie Chen, Md, Anita Modi, Md, Jad Al Danaf, Md

The Medicine Forum

Panelists:

Gregory C. Kane, MD, FACP The Jane and Leonard Korman, Professor and Chairman, Department of Medicine

David B. Nash, MD, MBA The Dr Raymond C and Doris N Grandon Professor, and Dean of the Jefferson College of Population Health

Rhea E. Powell, MD, MPH Assistant Professor of Medicine

Rachel B. Sorokin, MD, FACP Associate Professor of Medicine and Medical Director of Safety and Quality

Lawrence D. Ward, MD, MPH Associate Professor of Medicine and Vice Chairman for Clinical Practice and Quality

Introduction:

The impetus for provider payment reform in healthcare grew out of the recognition that growth in healthcare …

Fatal Rituximab-Induced Nonspecific Interstitial Pneumonia: Case Report And Review Of The Literature, Rino Sato, Md, Jeremy Molligan, Md, Sameh Gaballa, Md

The Medicine Forum

Introduction:

Rituximab is a chimeric anti-CD20 monoclonal antibody that is used to treat some hematological malignancies such as B-cell lymphomas, and various autoimmune diseases including immune thrombocytopenic purpura, systemic lupus erythematous, rheumatoid arthritis, and autoimmune hemolytic anemia. The most common side effects include fever, chills, and rigors. Respiratory complications such as cough, bronchospasm, sinusitis, and rhinitis have also been reported in 30% of patients in clinical trials.1 Rituximab-induced lung injury is a very rare but potentially fatal complication. We report a case of fatal single agent rituximab-induced nonspecific interstitial pneumonia to increase awareness about this serious side effect and review …

Brugada Syndrome: Diagnosis And Management, Amit Vira, Md, Ehsanur Rahman, Md

The Medicine Forum

Introduction:

The vast majority of cases of sudden cardiac arrest (SCA) are caused by ventricular tachyarrhythmias (VT), with most cases associated with structural heart disease. SCA in a structurally normal heart is an uncommon occurrence, most often occurring in the third decade of life and accounting for 5-15% of total SCA cases1-2. Common causes include Brugada syndrome, congenital long QT syndrome, catecholaminergic polymorphic ventricular tachycardia, arrhythmogenic right ventricular cardiomyopathy, and idiopathic ventricular tachycardia1-3. The majority of these patients with a structurally normal heart are undiagnosed until presenting with sudden cardiac death. It is believed that cardiac arrest is the initial …

Acute Mitral Regurgitation Following Myocardial Infarction, Drew Johnson, Md, Colin Craft, Md

The Medicine Forum

Case Report

A 66-year-old Caucasian female with no past medical history presented with four hours of dyspnea. The patient stated that two days prior to presentation she developed severe, crushing substernal chest pain that awoke her from sleep. The pain was non-radiating, lasted 30 minutes, and was associated with diaphoresis, shortness of breath, nausea, and lightheadedness. Her medical history was unremarkable except for a 50-pack-year smoking history.

On presentation, the patient was tachycardic to 110 beats per minute, and tachypnic at 22 breaths per minute. Cardiac auscultation revealed a 4/6 holosystolic murmur radiating to the axilla that was audible throughout …

Subcutaneous Emphysema: A Case Report Of An Atypical Manifestation Of Pcp In An Hiv Patient, Drew Kotler, Md, Drew Johnson, Md

The Medicine Forum

Introduction:

Pneumocystis pneumonia (PCP), caused by Pneumocystis jirovecii (P. jirovecii), is a fungal opportunistic infection seen in poorly controlled Human Immunodeficiency Virus (HIV) and is considered an Acquired Immune Deficiency Syndrome (AIDS) defining illness. It is also found in other immunocompromised states, such as hyper IgM syndrome and in patients on immunosuppressive therapy. In the HIV+ population, a CD4+ T-lymphocyte count (CD4 count) less than 200 cells/mm3 is associated with an increased risk of PCP. Combination antiretroviral therapy in conjunction with PCP prophylaxis has significantly decreased the prevalence of this opportunistic infection. In the United States HIV-infected population, PCP prevalence …

A Rare Infectious Cause Of Optic Neuritis, Shuwei Wang, Md, Drew Kotler, Md, Mitchell Sternlieb, Md

The Medicine Forum

Introduction:

Optic neuritis (ON) is the most common type of inflammatory, demyelinating disorder of the optic nerve, most often caused by multiple sclerosis (MS). However, alternative diagnoses should be considered and investigated thoroughly in the setting of other systemic symptoms. Optic neuritis is a rare manifestation of Lyme disease that typically improves with antibiotics.

Case Presentation:

A 50 year-old woman with history of breast cancer treated with mastectomy and chemotherapy in remission for ten years presented with a right-sided headache and right eye vision changes.

She was feeling well until three weeks prior to hospital admission in June when she …

Case Report Of Mycobacterium Mageritense Soft Tissue Abscess In Immune Compromised Patient With Inconclusive Gram Stain And Wound Culture, Noha Ghusson, Md

The Medicine Forum

Introduction:

Rapidly growing atypical mycobacteria are non-motile, aerobic bacteria that are ubiquitous in both natural and nosocomial environments1. While the prevalence of these organisms is not well described2, they have become an increasingly common source of localized skin and soft tissue infections, particularly in immunocompromised patients. Despite its ever-growing presence, this bacterium is difficult to identify due to late presentation of symptoms and negative results from conventional bacterial cultures and gram stains3. Mycobacterium mageritense, a non-pigmented rapidly growing atypical mycobacteria4, is an example of a newly isolated source of cutaneous infections that is difficult to identify in laboratories. Repeat cultures …

Peripartum Cardiomyopathy: A Cause Of Heart Failure In Young Women, Frederick B. Peng, Bs, Ryan J. Hidalgo, Md

The Medicine Forum

Introduction:

Peripartum cardiomyopathy (PPCM), also known as postpartum cardiomyopathy, is an infrequent cause of systolic heart failure that can affect women in the last month of pregnancy and up to five months after delivery. While PPCM is a type of dilated cardiomyopathy, the etiology of this condition remains largely unknown.1 Given the infrequency with which PPCM is encountered and the potential for this condition to be fatal, proper diagnosis and management is critical for reducing maternal and fetal complications, as well as assessing the safety of future pregnancies.

Case Presentation:

A 33-year-old gravida 3, para 1, abortus 1 (G3P1011) at …

An Expanding Heart: A Case For A Left Ventricular Rupture, Stephen Huelskamp, Md, Jessica Dahmus, Md

The Medicine Forum

Introduction:

A ventricular aneurysm was once a common complication of a myocardial infarction (MI), seen in up to 35 percent of coronary occlusion with transmural tissue damage.1 The advent of percutaneous coronary intervention (PCI) and thrombolytic therapy, which produced effective arterial patency, had a direct correlation with the reduction in the number of myocardial infarctions complicated by aneurysm, with the current incidence at 15 percent.2 Aneurysmal formation and rupture is a life-threatening complication of an MI and clinicians should be aware of its signs and management. We present a case of ST elevation MI (STEMI) complicated by left ventricular aneurysmal …

Tumor Lysis Syndrome With Recurrence In A Patient With Multiple Myeloma Following Bortezomib Therapy-A Case Report, Kemarut Laothamatas, Md, Indira Laothamatas, Ba, Bilal Asif, Md

The Medicine Forum

Introduction:

Tumor lysis syndrome (TLS) is a life-threatening complication most commonly observed in highly proliferative hematologic malignancies. The rapid release of intracellular contents causes hyperkalemia, hyperuricemia, hyperphosphatemia, and secondary hypocalcemia. The constellation of metabolic abnormalities can manifest clinically as renal insufficiency, cardiac arrhythmias, seizures, and death due to multi-organ failure. Traditionally, TLS is rarely observed in relatively indolent malignancies such as multiple myeloma. However, its frequency may be increasing with the advent of more effective and targeted therapies such as bortezomib. We herein report a 62-year-old man with IgA kappa light chain multiple myeloma who developed two episodes of TLS …

A Case Report Of Gemcitabine-Induced Steatohepatitis Associated With Adjuvant Monotherapy For Pancreatic Adenocarcinoma, Maria Vershvovsky, Md, Dina Halegoua-De Marzio, Md

The Medicine Forum

Introduction:

Drug induced liver injury [DILI] is the most common cause of fulminant liver failure in the Western hemisphere. There are databases logging the myriad of herbs, supplements and medications that can cause DILI. Gemcitabine, a cytotoxic chemotherapy used most commonly in lung and pancreaticobiliary malignancy, has been well described as causing cholestatic liver injury. There are several case reports remarking on fatal hepatic failure with gemcitabine. This case describes steatohepatitis, a pattern of liver injury not previously described with gemcitabine.

Case Presentation:

This case involves a 51-year-old healthy Caucasian female who presented to her primary care physician with jaundice …

Case Report: Paroxysmal Nocturnal Hemoglobinuria, Harsh Doshi, Ms, Neha Bansal Etherington, Md

The Medicine Forum

Introduction:

Paroxysmal nocturnal hemoglobinuria (PNH) is an acquired, life-threatening hematopoietic stem cell disorder characterized by the triad of hemolytic anemia, thrombosis, and impaired bone marrow function. PNH arises due to an acquired mutation in the synthesis of the glycosylphosphatidylinositol (GPI) anchor protein, which leads to a deficiency of complement regulatory proteins and unregulated complement-mediated hemolysis.1 With a reported incidence of 1 to 10 cases per million and a 3-5% risk of developing leukemia, new therapeutic advances have emerged to decrease the 10-year mortality associated with PNH.2,3 Here, we discuss the presentation of a 59-year-old male with PNH, strategies to diagnose …

Case Report: Cytarabine-Induced Pericarditis And Pericardial Effusion, Rino Sato, Md, Robert Park, Md

The Medicine Forum

Introduction:

Cytarabine (cytosine arabinoside, Ara-C) is an antimetabolite analogue of cytidine that is used as a chemotherapeutic agent for the treatment of acute myelogenous leukemia and lymphocytic leukemias1 . The most common side effects of this therapy include myelosuppression, pancytopenia, hepatotoxicity, gastrointestinal ulceration with bleeding, and pulmonary infiltrates2. Cardio-pulmonary complications of cytarabine therapy are uncommon, but include supraventricular and ventricular arrhythmias, sinus bradycardia, and recurrent heart failure2, 3. Occasionally, patients may develop pericarditis leading to pericardial tamponade, which can be fatal. We report a case of cytarabine-induced pericarditis and pericardial effusion to increase awareness about this serious side effect of …

Neurosarcoidosis: Granulomatous Disease Presenting With Confusion And Gait Disturbance, Jasmine Mitchell, Ms, Divya Chalikonda, Md, Drew Kotler, Md

The Medicine Forum

Introduction:

Sarcoidosis is a multisystem disorder characterized by noncaseating granulomas that frequently presents with pulmonary infiltrates, hilar lymphadenopathy, and ocular and skin lesions. Sarcoidosis affects about 20 per 100,000 individuals in the US with a higher prevalence among African Americans than in Caucasians.1 The average age of presentation ranges from 33 to 41 years.1 Less than 10% of people with sarcoidosis have CNS involvement, with cranial neuropathy, aseptic meningitis, hydrocephalus, seizures, psychiatric symptoms, and cerebral lesions with endocrine manifestations included among the possible manifestations.2 This case report describes a woman with neurosarcoidosis presenting with confusion and gait disturbances.

Case Presentation: …

A Case Of Amanita Phalloides Poisoning That Avoided Liver Transplantation, Tomoyuki Hongo, Md, Matthew Zheng, Md, Mark Malamood, Md, Steven K. Herrine, Md

The Medicine Forum

We describe a 49 year old male admitted with acute liver failure from likely Amanita phalloides poisoning, treated with NIH clinical trial protocol.

Case Presentation:

The patient is a 49 year old male with a history of chronic untreated hepatitis B and intraductal papillary mucinous neoplasm of the pancreas who initially presented to an outside hospital (OSH) with intractable nausea and non-bloody, non-bilious vomiting that began twelve hours after eating seven gray-white mushrooms from his backyard.

On initial presentation to the OSH, his hepatic function panel and coagulation markers were within normal limits. He was treated symptomatically with intravenous (IV) …

Localization Of An Insulinoma By Endoscopic Ultrasound: A Case Report And Review Of Diagnostic Modalities, Kristen Jackson, Md, Joseph Yoo, Md, Bolin Niu, Md

The Medicine Forum

Insulinomas are a type of pancreatic neuroendocrine tumor (pNET) that arises from pancreatic endocrine tissue. They are rare, with an estimated incidence of 4 cases per 1 million person-years7. While typically larger pNETs are detectable using conventional imaging studies such as transabdominal ultrasound, CT, or MRI, insulinomas are frequently missed by conventional imaging due to their relatively small size. We present the case of a 66-year-old African American male with an insulinoma undetected by contrast-enhanced MRI, that was ultimately localized and diagnosed via endoscopic ultrasound (EUS) with fine needle aspiration (FNA).

Case Presentation:

A 66-year-old African American male with past …