Abstract
The proliferating trichilemmal tumor is a lesion with trichilemmal differentiation, more common occurring among elderly women; it affects the scalp with sizes ranging from 2-10 cm. Microscopically, it is solid-cystic, well-defined, affecting the dermis and the subcutaneous cellular tissue. It presents trichilemmal and squamous keratinization. Pleomorphism may be present. Ghosts, apocrine and spindle cells can be observed. The differential diagnosis should be performed with malignant trichilemmal tumor and squamous cell carcinoma. Their behavior is benign and complete resection is recommended. Our goal is to report a case of proliferating trichilemmal tumor.
Highlights
The proliferating trichilemmal tumor (PTT) is a solid-cystic lesion showing trichilemmal differentiation present in the isthmus of the hair follicle[1]
The human papilloma virus is present[1]. It is unclear whether PTT develops de novo or arises from an existing trichilemmal cyst[3,4,5]
The aim of this paper is to present as a case report, the stages of diagnosis and treatment of PTT
Summary
The proliferating trichilemmal tumor (PTT) is a solid-cystic lesion showing trichilemmal differentiation present in the isthmus of the hair follicle[1]. It was first described by Wilson Jones as proliferating epidermal cysts in 1966(2). The human papilloma virus is present[1]. It is unclear whether PTT develops de novo or arises from an existing trichilemmal cyst[3,4,5]. PTT has several denominations, such as squamous cell carcinoma in sebaceous cyst, sub epidermal acanthoma, among others, reflecting the different interpretations from several authors, according to their histogenesis and biological behavior(1, .5-7)
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Jornal Brasileiro de Patologia e Medicina Laboratorial
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
