To the Editor.—
The case report by Drs Benisch and Peison, which described an apocrine hidrocystoma occurring on the shoulder (Archives 113:71-72, 1977), brought to mind a patient I saw, whose tumor was adjacent to the umbilicus.
Report of a Case.—
For two years, an 83-year-old man had had an asymptomatic, 8-mm, blue papule that was 2 cm lateral to the umbilicus (Fig 1). On a biopsy specimen, I saw cystic spaces in the dermis linedFig 1.—Blue lesion of apocrine hidrocystoma to left of umbilicus.Fig 2.—High power view showing apocrine secretory epithelium (original magnification × 630). by an "apocrine-type" secretory epithelium (Fig 2). The innermost layer was composed of tall columnar cells, with basally located nuclei, that showed decapitation secretion. In many areas, peripheral to the secretory cells were myoepithelial cells. The stroma was loosely woven and contained some areas of extravasated RBCs.
To my knowledge, this
Goodkin PE. Apocrine Hidrocystoma Adjacent to the Umbilicus. Arch Dermatol. 1977;113(10):1458. doi:10.1001/archderm.1977.01640100136035