A proliferating trichilemmal cyst of long standing duration, with its sudden increase in size and ulceration was clinically suspected to be a squamous cell carcinoma. Microscopic features revealed the appropriate diagnosis.
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Proliferating trichilemmal tumor (PTT) is a rare, benign adnexal tumor of hair follicles that commonly mimics malignancy. Excellent outcomes can be achieved with early surgical excision. Delayed presentations-as in this giant shoulder PTT-are made possible, in part, by patient education and healthcare accessibility in low-resource settings.
View Article and Find Full Text PDFA Rare Case of a Malignant Proliferating Trichilemmal Tumor: A Molecular Study Harboring Potential Therapeutic Significance and a Review of Literature.
Dermatopathology (Basel)
December 2024
Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX 77030, USA.
Malignant proliferating trichilemmal tumors (MPTTs), arising from the external root sheath of hair follicles, are exceptionally rare, with limited documentation of their genetic alterations. We present a case of a 64-year-old African American woman who initially presented with a gradually enlarging nodule on her posterior scalp. An initial biopsy at an outside hospital suggested metastatic adenocarcinoma or squamous cell carcinoma (SCC) of an uncertain origin.
View Article and Find Full Text PDFA Unique Role of the Oncoplastic Breast Surgeon's Approach to an Inframammary Proliferating Trichilemmal Cyst: A Case Report.
Cureus
November 2024
Department of Surgery, Ng Teng Fong General Hospital, Singapore, SGP.
Trichilemmal cysts, also known as pilar cysts, are commonly found on hair-bearing surfaces, such as the scalp or hairline. These are cysts that form from hair follicles and are benign. We describe an unusual case of a middle-aged lady presenting with a longstanding left-sided inframammary mass that had started growing more in the last year prior to the presentation.
View Article and Find Full Text PDFLower Island Trapezius Flap for a Rare Scalp Tumor.
Cureus
November 2024
General Surgery, Malavya Hospital, Bengaluru, IND.
A 54-year-old male with a past history of acute pancreatitis and pulmonary embolism presented with a scalp tumor in the occipital region for a six-month duration. With a biopsy report of squamous cell carcinoma, wide local excision with the lower island trapezius myocutaneous flap with skin grafting was done. However, the final pathology report revealed a proliferating trichilemmal tumor with clear margins.
View Article and Find Full Text PDFClinical Characteristics and Genomic Profile of Malignant Proliferating Trichilemmal Tumor: A Systematic Review of the Literature.
J Surg Oncol
November 2024
Department of Surgery, MercyOne Medical Center, Des Moines, Iowa, USA.
Malignant proliferating trichilemmal tumors (MPTT) are rare skin lesions arising from the outer sheath of the hair follicle root. Because of their rarity and difficulty in pathologic identification, these skin lesions are often initially misdiagnosed. After a literature review, we found initial clinical or histopathological misdiagnosis has an associated 10.
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