Eruptive collagenoma is a rare entity, with unknownetiology, considered to be a type of connective tissuenevus composed of collagen. It is usually reported inyoung adults occurring predominantly on the trunkand extremities. Systemic findings and family historyof a similar condition are not typically associated andthe prognosis is excellent. There are few pediatric casesreported in literature. Herein we report an uncommoncase of eruptive collagenoma in a 12-year-old childand present a brief review of the literature.

Glomus tumor is a rare benign vascular hamartoma derived from the modified smooth muscle cells of the glomus body. Paroxysmal pain is the leading symptom. A 78-year-old woman presented at our clinic with a 50-year history of a slow growing painful purple blue tender nodule under the right fourth finger nail. Dermoscopy and magnetic ressonance confirmed the presence of a large subungual tumor and total surgical excision was performed after partial nail plate avulsion. Histologic examination confirmed a glomus tumor. After 1 year of follow-up, the nail grew with normal shape and neither complications nor recurrence were observed.