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Clinicopathological analysis of 384 cases of poroid neoplasms including 98 cases of apocrine type cases
Author(s) -
Ito Keigo,
Ansai Shinichi,
Fukumoto Takaya,
Anan Takashi,
Kimura Tetsunori
Publication year - 2017
Publication title -
the journal of dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 65
eISSN - 1346-8138
pISSN - 0385-2407
DOI - 10.1111/1346-8138.13421
Subject(s) - apocrine , scalp , lesion , medicine , trunk , pathology , anatomy , dermatology , biology , ecology
We examined 384 cases of poroid neoplasms. Most cases ( n = 279, 72.7%) exhibited the features of only one subtype. One hundred and ninety‐eight cases (51.6%) showed only the features of poroma ( P ), 20 (5.2%) hidroacanthoma simplex ( HS ), five (1.3%) dermal duct tumor ( D ) and 56 (14.6%) hidradenoma ( HA ). Composite tumors of those four subtypes were observed in 105 cases (27.3%). In the trunk and lower extremities, lesions with the features of P were observed at higher rates than other sites. Those of HS and D were more frequently observed in the lower extremities. Those of HA were seen at higher rates in the scalp, face, neck and genitalia. Ninety‐eight cases (25.5%) showed decapitation secretion and diagnosed as apocrine type lesion. Apocrine type lesions were frequently observed in the lesions on the genitalia (40.0%), scalp (31.8%) and trunk (31.1%), whereas at lower rates in those on the neck (21.4%) and lower extremities (24.0%). In apocrine type cases, the lesions were located more frequently on the scalp and trunk than non‐apocrine type, whereas were less frequent on extremities. The rate of apocrine type lesions in the cases with only one subtype (19.7%) was lower than that of those with composite tumors (41.0%). In the apocrine type (43.9%), composite tumors are more frequent than in the non‐apocrine type (21.7%). In D (40.8%) and HA (32.3%), apocrine type lesions were more frequently observed than other subtypes. In conclusion, it should be noted that a quarter of poroid neoplasms are composite tumors and/or show apocrine differentiation.