Reticulated acanthoma with apocrine differentiation.
Reticulated acanthoma with apocrine differentiation (RAAD) represents a rare variant of adnexal neoplasm first described by Ackerman et al. in 1998. It consists of cords and columns of adnexal keratinocytes that form a reticulated pattern. Variable signs of apocrine, sebaceous and follicular differentiation may be present. Since 1998, no further cases of this condition have been published. We report on a lesion excised from the leg of a 46-year-old man, which displayed histopathological features diagnostic of RAAD. Criteria for diagnosis and differential diagnoses are discussed.
Department of Pathology, Universidad Nacional de Colombia, Bogotá, Colombia. jchiromi@hotmail.com
Juan Carlos-Hiromi
JC
López
Gulnara
G
Taldibaeva
Katja
K
Sperhake
Bo-Hyun
BH
Park
Helger
H
Stege
Almut
A
Böer-Auer
D049309:Acanthoma / Q000473:pathology*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged; D018294:Neoplasms, Adnexal and Skin Appendage / Q000473:pathology*; D012878:Skin Neoplasms / Q000473:pathology*