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Article
February 1996

Acquired Clubbing of the Great Toenail

Author Affiliations

Diplomate In Med; University of Jena, Jena, Germany

Arch Dermatol. 1996;132(2):228. doi:10.1001/archderm.1996.03890260131022
Abstract

REPORT OF A CASE  A 25-year-old man who was an active soccer player presented with an incessant, monstrous swelling of the terminal part of the left great toe. He noted continuous development of the lesion over a period of 1 year. Pain was experienced only with pressure or trauma. The subcutaneous swelling under the toenail caused partial elevation and convexity of the toenail and leptonychia (Figure 1).A radiograph excluded osseous involvement or deviation of the subungual tumor.After the complete surgical removal of the toenail, an encapsulated gelatinous tumor was seen that appeared to adhere to the osseous structure. The tumor was removed by curettage. The histologic and immuno-histologic findings are shown in Figure 2 and Figure 3.What is your diagnosis?

DIAGNOSIS:  Digital mucoid cyst (pseudocyst).

HISTOPATHOLOGIC FINDINGS  Hematoxylin-eosin-stained sections showed a disorderly tissue section with star-shaped fibroblasts and slight basophilic

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