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Case Reports
. 2004 Mar;31(3):287-90.
doi: 10.1111/j.0303-6987.2004.00174.x.

Giant folliculosebaceous cystic hamartoma of the upper extremity

David E Sturtz  1 , David J Smith, Marlene S Calderon, Douglas R Fullen
Affiliations
Free article
Case Reports

Giant folliculosebaceous cystic hamartoma of the upper extremity

David E Sturtz et al. J Cutan Pathol. 2004 Mar.
Free article

Abstract

Background: Folliculosebaceous cystic hamartoma (FSCH) is a rare cutaneous hamartoma consisting of dilated folliculosebaceous units invested in mesenchymal elements. These lesions have a striking predilection for the central face and scalp of adults. The vast majority of lesions present as 0.5-1.5-cm papules or exophytic nodules. A single case of giant FSCH has been reported on the upper back.

Methods: A 32-year-old woman presented with a (15 cm in greatest dimension) plaque-like, multinodular lesion on her left upper arm for several years. The lesion was clinically suspected to be a nevus sebaceus.

Results: The skin excision showed numerous dermal and subcutaneous dilated follicular structures with peripherally radiating sebaceous lobules, hair follicles, and surrounding mesenchymal elements consistent with FSCH.

Conclusion: To our knowledge, this is the second case of giant FSCH. Our case is unique for its larger size, more plaque-like growth, and location on an extremity when compared to the seminal case of giant FSCH.

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