Korean J Dermatol.
2011 Nov;49(11):1014-1016.
Isolated Periungual Collagenoma with Longitudinal Groove on the Finger Nail
- Affiliations
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- 1Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea. jwa-left@hanmail.net
Abstract
- Isolated collagenoma usually occurs on the plantar area and is frequently associated with Proteus syndrome. A few reports have described isolated collagenoma on extra-plantar areas such as palm, scalp, face, thigh and finger. Herein, we report a case of isolated collagenoma on the periungual area, which was confused with digital mucous cyst. A 26-year-old man visited our clinic with an asymptomatic, 0.8x0.7 cm-sized, firm, skin-colored nodule on the periungual area of the left fourth finger. The distal nail of the nodule showed a longitudinal groove. Histopathologic findings from periungual nodule showed thickened collagen bundles packing reticular dermis.
