Tubulopapillary Cystic Adenoma With Apocrine Differentiation: A Unifying Concept for Syringocystadenoma Papilliferum, Apocrine Gland Cyst, and Tubular Papillary Adenoma.
Am J Dermatopathol 2016 Dec 28. Epub 2016 Dec 28.
*Division of Dermatology and Dermatopathology, Nippon Medical School, Musashi Kosugi Hospital, Kawasaki, Japan; †Sapporo Dermatopathology Institute Sapporo, Japan; and ‡Department of Dermatology, Nippon Medical School Tokyo, Japan.
Syringocystadenoma papilliferum (SCAP), apocrine gland cyst (AGC, also called apocrine hidrocystoma or apocrine cystadenoma), and tubular papillary adenoma (TPA) with apocrine differentiation are defined as proliferations of apocrine epithelium with myoepithelial cells. At Sapporo Dermatopathology Institute, we retrieved 308 benign neoplastic lesions diagnosed as SCAP, AGC, or TPA and combinations of these entities. Among the 308 lesions, 202 (66%) exhibited features of only one type, of which 144 (47%) were AGC, 39 (13%) were TPA, and 19 (6%) were SCAP. Read More