Pathology Commons^™

Analysis Of Amniotic Fluid Specimens For Common Chromosome Disorders Using Interphase Fluorescence In Situ Hybridization, Tariq Moatter, Zahida Khilji, Farzana Murad, Shama Munim

Department of Pathology and Laboratory Medicine

Objective: The aim of the study was to examine the usage of multi colour FISH technology as an adjunct to conventional cytogenetics for the prenatal diagnosis of aneuploidy in interphase nuclei from high risk pregnancies.
Methods: Amniotic fluid samples were collected for interphase FISH analysis using DNA probes for chromosomes 13, 18, 21, X and Y. All the probes were directly labeled with fluorescent molecules. Fluorescent signals were observed under a microscope. A minimum of 100 nuclei with defined hybridization signals were counted for each probe.
Results: Seventy-eight amniotic fluid samples were received for FISH analysis. The average age of …

Comparative Predictive Value Of Three Prognostic Markers--S-Phase Fraction, Pcna And Mitotic Count On Axillary Lymph Node Metastasis In Carcinoma Breast, Shahid Pervez, Muhammad Nadeem Khan, Muhammad Israr Nasir

Department of Pathology and Laboratory Medicine

Background: Axillary lymph node metastasis is the single most important prognostic factor in carcinoma of the breast. Therefore, prognostic markers that may reliably predict probability of lymph node (LN) metastases are of great value. This study was conducted to compare the predictive value of two novel prognostic / proliferative markers i.e. S-phase fraction (SPF) and proliferating cell nuclear antigen (PCNA) in parallel with mitotic index.

Methods: Data of consecutive cases of infiltrating ductal carcinoma (IDC) breast diagnosed from July 2003 to July 2004 at the section of the Histopathology, The Aga Khan University Hospital, Karachi, were reviewed. A total of …