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Two cases of folliculosebaceous cystic hamartoma

S Tanimura1, K Arita, F Iwao

  • 1Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan. shintaro-g500@jcom.home.ne.jp

Clinical and Experimental Dermatology
|November 29, 2005
PubMed

Insights

Folliculosebaceous cystic hamartoma (FSCH) is a rare skin growth. This report details two new cases and reviews 34 previously documented instances of FSCH.

Area of Science:

  • Dermatopathology
  • Histopathology
  • Cutaneous Neoplasms

Background:

  • Folliculosebaceous cystic hamartoma (FSCH) is an uncommon benign skin tumor.
  • It is characterized by abnormal development of hair follicle and sebaceous gland structures.
  • FSCH is often associated with mesenchymal tissue proliferation.

Observation:

  • Two cases of FSCH are presented with detailed histopathological analysis.
  • Patient 1: 60-year-old male with a scalp nodule.
  • Patient 2: 70-year-old male with a persistent ear nodule.

Findings:

  • A review of English literature identified 34 reported cases of FSCH.
  • Clinical presentation typically involves asymptomatic nodules on the head and neck.
  • Lesions are usually firm, skin-colored, and under 25 mm in diameter.

Implications:

  • Histopathological differentiation from similar entities like sebaceous trichofolliculoma is crucial.
  • Understanding FSCH aids in accurate diagnosis and management of rare cutaneous hamartomas.
  • Further research may elucidate the specific developmental pathways of FSCH.

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