Case Number : Case 1013 - 12th May Posted By: Guest

Apocrine papillary cystadenoma with focal mucinous metaplasia.

[size=4][color=#000000][font=Arial, sans-serif]Solid-cystic apocrine hidrocystoma showing papillae with focal mucinous change that project into cystic lumen and tubular solid areas.[/font][/color][/size]

Apocrine papillary cystadenoma with focal mucinous metaplasia

Apocrine papillary cystadenoma with focal mucinous metaplasia. the lesion not totaly excised see fig a

Apocrine tubulopapillary cystadenoma with mucinous metaplasia.

Agree. Tubulopapillary hidradenoma. (Too many synonyms for this exist....tubular apocrine adenoma, tubulopapillary apocrine adenoma, papillary tubular adenoma, apocrine cystadenoma, etc. in addition to others, above.) Location on scalp is common.

Well circumscribed nodule with hyaline collagenous, non-inflammatory stroma lacking inflammation, and numerous telangiectatic vessels. Variable glandular, cribriform, cystic, and arborizing papillary architecture. Dual-layer sweat-gland architecture with myoepithelial layer, and cuboidal vs. columnar lumenal cells, some with apocrine snouting. Foamy lumenal cells with goblet-cell features occasionally present, consistent with incidental mucinous metaplasia. No significant cytologic atypia or proliferative activity.