Folliculosebaceous cystic hamartoma: A clinical pathologic study

A Case of Giant Folliculosebaceous Cystic Hamartoma

“…Among the cases of FSCH in the literature [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] , only a few cases of giant FSCH have been reported (Table 1) 3-6 . The clinical features of our case were similar to those of the reported giant FSCH cases, except for cerebriform surface and chin involvement.…”

A Case of Folliculosebaceous Cystic Hamartoma on the Right Nasal Ala

“…Folliculosebaceous cystic hamartoma (FSCH) is a distinctive cutaneous hamartoma of follicular, sebaceous and mesenchymal components 1,4 . This hamartoma is characterized by infundibulosebaceous cystic proliferation with specific mesenchymal changes including packed fibrillary bundles of collagen, cleft formation between fibroepithelial units and surrounding stroma, sparsely distributed adipocytes and increased numbers of small venules 1,4 .…”

“…This hamartoma is characterized by infundibulosebaceous cystic proliferation with specific mesenchymal changes including packed fibrillary bundles of collagen, cleft formation between fibroepithelial units and surrounding stroma, sparsely distributed adipocytes and increased numbers of small venules 1,4 . Since Kimura et al 1 .…”

“…Since Kimura et al 1 . This hamartoma usually occurs on the head, especially on the central part of the face and nose 4 . The size of the lesions in all reported cases on the head and neck did not exceed 25 mm in diameter.…”

“…The histogenesis of FSCH is still unclear. Some authors denied that FSCH is a disease entity 2,3 , whereas others regarded it as a distinct adnexal tumor despite the controversial nosology 1,[4][5][6][7][8] . The controversy exists largely in the relationship between FSCH and sebaceous trichofolliculoma.…”