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| Year:
2026 |
Month:
July
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Volume:
15 |
Issue:
3 |
Page:
PC01 - PC04 |
A Large Recurrent Proliferating Trichilemmal Tumour of Gluteal Region: A Case Report with Review of Literature
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Correspondence
Sreedevi Jakka, Bijan Saha,
Dr Sreedevi Jakka,
Consultant, Department of Pathology Tata Main Hospital C-Road West, Northern
Town Bistupur, Jamshedpur-831001, Jharkhand, India.
E-mail: sreedevi@tatasteel.com :
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Proliferating Trichilemmal Tumour (PTT) is an uncommon, benign skin appendageal tumour with distinctive morphologic features. It most commonly presents as a well-circumscribed subcutaneous nodule, and its histological hallmark is the presence of trichilemmal keratinisation and squamoid cytological features. They are believed to originated from the Trichilemmal Cyst (TC) and have malignant potential, termed a Malignant PTT (MPTT). These lesions may cause significant morbidity and have a risk of recurrence after simple local excision. The lesion mimics morphologic resemblance to squamous cell carcinoma at the microscopic level, making a correct histologic diagnosis extremely important. The present case involves a large PTT occurring in the gluteal region of a 67-year-old man, which is an uncommon anatomical location. The tumour recurred despite previous excision, indicating its potential for local aggressiveness. The large size of lesion, which clinically mimicked malignancy. Despite clinical suspicion, histopathology did not meet malignant criteria, helping distinguish it from squamous cell carcinoma or MPTT. This underscores the importance of correct histopathological interpretation, especially when diagnostic challenges arise due to morphological resemblance to squamous cell carcinoma.
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