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Fine‐needle aspiration cytology in the diagnosis of malignant proliferating trichilemmal tumor: Report of a case and review of the literature
Author(s) -
Kini Jyoti R.,
Kini Hema
Publication year - 2009
Publication title -
diagnostic cytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.417
H-Index - 65
eISSN - 1097-0339
pISSN - 8755-1039
DOI - 10.1002/dc.21100
Subject(s) - medicine , scalp , cytology , cytopathology , fine needle aspiration cytology , pathology , outer root sheath , hair follicle , neoplasm , fine needle aspiration , basal cell , dermatology , biopsy , immunohistochemistry , endocrinology
Malignant proliferating trichilemmal tumor is a rare cutaneous neoplasm derived from the outer root sheath of the hair follicle. Fine‐needle aspiration cytology is being increasingly used in the investigation of primary and metastatic cutaneous tumors. However, there are few reports on the cytology of trichilemmal tumors in the literature. We describe the cytological features of this uncommon adnexal tumor presenting as a scalp mass in a 58‐year‐old woman. In view of its aggressive biological behavior, it is crucial for cytologists to be aware of this rare lesion and distinguish it from primary cutaneous squamous‐cell carcinoma. The differences on fine‐needle aspiration cytology can be subtle and pose problems in diagnosis. Diagn. Cytopathol. 2009. © 2009 Wiley‐Liss, Inc.