Acquired multiple pilosebaceous cysts on the face having the histopathological features of steatocystoma multiplex and eruptive vellus hair cysts

A Case of Multiple Pilosebaceous Cysts

“…Sebaceous glands or atrophic sebaceous elements are constituently present adjacent to or within the cyst wall [5]. In the larger cyst in our patient, the size and the construction of the cyst wall were in accordance with SM, but the absence of sebaceous glands or atrophic sebaceous elements adjacent to or within the cyst wall differed from typical SM.…”

“…Typical SM consists of an empty cyst formed by a thin wall of stratified squamous epithelium [5]. Sebaceous glands or atrophic sebaceous elements are constituently present adjacent to or within the cyst wall [5].…”

“…They are skin-colored or yellowish papules, 1-5 mm in diameter, usually on the chest and proximal extremities. Steatocystoma multiplex (SM) is characterized by multiple smooth and rounded cystic nodules, commonly on the trunk and proximal limbs [3,4,5]. It varies in diameter from a few millimeters to 20 or more millimeters [3,4,5].…”

“…The superficial lesions are yellowish in appearance. The concomitant occurrence of EVHC and SM in a patient is not rare [3,4,5]. EVHC and SM share a clinical resemblance in age of onset, localization, and clinical appearance [5].…”

“…The concomitant occurrence of EVHC and SM in a patient is not rare [3,4,5]. EVHC and SM share a clinical resemblance in age of onset, localization, and clinical appearance [5]. Ohtake et al have proposed that both may result from a cystic change near the junction of the pilosebaceous duct, and that two diseases may represent a spectrum of the same disease process rather than separate entities [4].…”