Characteristic Clinical and Dermoscopic Features of Nonvolar Poroma

Author:

Ha Dae-Lyong12ORCID,Lee Gi-Wook1,Shin Kihyuk1,Kim Hoon-Soo12,Ko Hyun-Chang1,Kim Byung-Soo12ORCID,Kim Moon-Bum12

Affiliation:

1. Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea

2. Biomedical Research Institute, Pusan National University Hospital, Busan, Korea

Abstract

Background A poroma typically presents as a solitary, pink-to-red papule or nodule in acral volar areas. However, in nonvolar areas, this typical clinical feature (TCF) can be difficult to identify. Objective We aimed to compare clinical and dermoscopic characteristics between nonvolar poroma (NVP) and volar (ie, typical) poroma (VP). Methods We assessed the clinical and dermoscopic characteristics of 40 patients with poromas who were divided into the NVP and VP groups. Results Of the 40 patients, 20 (50.0%) were allocated to the NVP group and 20 (50.0%) to the VP group. Pigmented variants were more common in the NVP group than in the VP group (60.0% vs 5.0%). The TCF of poroma was observed less frequently in the NVP than the VP group (45.0% vs 85.0%). Approximately one-third (30.0%) of patients with NVP received an initial clinical diagnosis of skin cancer. Dermoscopic patterns associated with melanoma or basal cell carcinoma were more common in the NVP group than in the VP group (65% vs 30%). Conclusions Skin cancer-associated clinicodermoscopic features were more frequently observed in patients with NVP, who simultaneously lost dermoscopic patterns associated to poromas and acquired those associated with skin cancer, than those with VP.

Publisher

SAGE Publications

Subject

Dermatology,Surgery

Reference16 articles.

1. Eccrine Poroma

2. Goldsmith LA., Katz SI., Gilchrest BA., Paller AS., Leffell DJ., Wolff K. Fitzpatrick’s Dermatology in General Medicine. 8th ed. McGraw-Hill; 2011:1349-1352.

3. Poroma: a review of eccrine, apocrine, and malignant forms

4. Eccrine poroma in an unusual site: A clinical and dermoscopic simulator of amelanotic melanoma

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