Cutaneous salivary gland choristoma in unusual sites.

Abstract

Presence of normal cell lineage at abnormal location is known as choristoma. Salivary gland choristoma are relatively rare and predominantly occures in head and neck region wherein brachial areches fuses during development. The extrafacial choristoma are extremly rare. 
We have 5 month old infant who has multiple descrete erythmatous papulonodules over back, arm and forearm. Mother of child gave the history of oozing of sticky fluid through these lesion during feeding. This was suggestive of salivary galnd origin of tissue. The histopathology has typical acinar cell arrangement and IHC studies revealed diffuce uptake of SMA antigen.