Open AccessThe Proliferating and Malignant Proliferating Trichilemmal Cyst: An Anatomo-Clinical Study of Three Cases
Author(s) -
Ibtissam Benslimane Kamal,
F. Hali,
F. Marnissi,
Soumiya Chiheb
Publication year - 2021
Publication title -
skin appendage disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.773
H-Index - 13
eISSN - 2296-9195
pISSN - 2296-9160
DOI - 10.1159/000518354
Subject(s) - scalp , lesion , pathology , biopsy , medicine , cyst , scarring alopecia , malignant transformation , dermatology
Background: The proliferating and malignant proliferating trichilemmal cysts (MPTC) are rare adnexal tumors. We report 3 cases through which we will detail the anatomo-clinical characteristics of these tumors. Cases: Two patients, 60 and 56 years old, consulted for multiple scalp nodules, one of which had changed with the appearance of a central ulceration. The removal of the remaining scalp nodules was in favor of PTCs. The third patient presented with an ulcerative lesion occupying the vertex. Skin biopsy found trichilemmal-type keratinization associated with areas of necrosis concluding with a MPTC. Discussion: The PTC is a transitional form between the trichilemmal cyst (TC) and the MPTC. The increase in the size of a TC and ulceration are sufficient signals to suspect this evolution.