Unusual complex apocrine tumor consisting of syringocystadenoma papilliferum and apocrine hidrocystoma within a single lesion: A case report
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Syringocystadenoma papilliferum (SCAP) and apocrine hidrocystoma (AH) are benign apocrineneoplasms that usually occur separately. SCAP arises predominantly in head and neck,while AH typically develop in periorbital area. We report a case of a 68-year-old male withan asymptomatic erythematous papulonodule that occurred on his back 3 years ago. Histologicexamination showed cystic invagination extending from the epidermis into the dermiswith some papillary projections. The invaginated portion was lined by epithelial bilayer composedof cuboidal and columnar cells, and decapitation secretion was observed in the innerepithelial layer. In the deep dermis, multiple cystic spaces with variable sizes were observed,and these cysts also presented double layers of the epithelium and decapitation secretion. According to such histologic features, the coexistence of SCAP and AH within a single lesionwas demonstrated. The patient was recommended to completely remove the remaininglesion after punch biopsy, but he refused further surgical management. Herein, we report anunusual case of complex apocrine tumor with a rare composition in an atypical site.
Abstract
Syringocystadenoma papilliferum (SCAP) and apocrine hidrocystoma (AH) are benign apocrineneoplasms that usually occur separately. SCAP arises predominantly in head and neck,while AH typically develop in periorbital area. We report a case of a 68-year-old male withan asymptomatic erythematous papulonodule that occurred on his back 3 years ago. Histologicexamination showed cystic invagination extending from the epidermis into the dermiswith some papillary projections. The invaginated portion was lined by epithelial bilayer composedof cuboidal and columnar cells, and decapitation secretion was observed in the innerepithelial layer. In the deep dermis, multiple cystic spaces with variable sizes were observed,and these cysts also presented double layers of the epithelium and decapitation secretion. According to such histologic features, the coexistence of SCAP and AH within a single lesionwas demonstrated. The patient was recommended to completely remove the remaininglesion after punch biopsy, but he refused further surgical management. Herein, we report anunusual case of complex apocrine tumor with a rare composition in an atypical site.
참고문헌 (15)
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