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Updated: May 27, 2026

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia

Published on: August 9, 2024

Proliferating trichilemmal tumor--case report.

Luíza Helena dos Santos Cavaleiro¹, Fernanda de Oliveira Viana, Clivia Maria Moraes de Oliveira Carneiro

¹Serviço de Dermatologia, Universidade Federal do Pará, Belém, PA, Brasil.

Anais Brasileiros De Dermatologia

|November 10, 2011

Summary

Proliferating trichilemmal tumors (PTT) are rare skin neoplasms. This report details an unusual case of PTT occurring on the buttocks of a teenager, differing from typical presentations.

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Area of Science:

Dermatology
Oncology
Pathology

Background:

Proliferating trichilemmal tumor (PTT) is an uncommon skin neoplasm.
It originates from the follicular isthmus and is characterized by trichilemmal keratinization.

Observation:

PTT typically presents as a solitary nodule on the scalp.
The affected demographic is usually elderly women.

Findings:

This case report describes a PTT located on the gluteal region (buttocks).
The patient was a 16-year-old female, representing a unique demographic and location for PTT.

Implications:

This case expands the known clinical and anatomical spectrum of proliferating trichilemmal tumors.
It highlights the importance of considering PTT in younger patients with atypical lesion locations.

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Last Updated: May 27, 2026

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia

Published on: August 9, 2024

Further research may elucidate potential unique biological factors in pediatric or adolescent PTT.