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Proliferating Tricholemmal Tumour: Clinicopathological Aspects Of A Case., Adeel Khoja, Yan B, Lee Sj, Cheong E. C, Tan K B
Proliferating Tricholemmal Tumour: Clinicopathological Aspects Of A Case., Adeel Khoja, Yan B, Lee Sj, Cheong E. C, Tan K B
Department of Medicine
We report the case of a 49-year-old man who presented with an enlarging mass over his occipital scalp. The clinical impression was either a squamous cell carcinoma or an unusual adnexal tumour. A wide excision was performed with skin grafting. Gross examination revealed a large exophytic tumour mass measuring 10 cm. Histopathological examination showed a circumscribed, well-differentiated squamoproliferative lesion with a lobulated architecture. Clear cell features, pilar-type keratinisation, microcalcifications and the presence of mucinous degeneration were noted. A diagnosis of proliferating tricholemmal tumour was made. This entity incorporates a spectrum of lesions, ranging from the mostly benign proliferating tricholemmal cyst …