A case of pilonidal disease presenting as a subcutaneous nodule in the peri-umbilical area

Misa Nakano, Tetsuya Koga, Katsuo Sueishi, Hiromaro Kiryu, Masutaka Furue

Research output: Contribution to journalArticlepeer-review

Abstract

A 25-year-old fireman presented with a 3-week history of pain arising from the umbilicus to the right side of the umbilicus. Examination revealed hirsute abdomen and a solid subcutaneous nodule (diameter, 3x2 cm) on the right side of the umbilicus. Ultrasonography showed an iso-hypoechoic mass, and computed tomography revealed an obscure mass. Excisional biopsy of the mass showed a yellowish-white solid mass with a strand of hair. Histopathological test revealed granulomatous inflammation around the hair shaft. On the basis of these findings, a diagnosis of pilonidal disease presenting as a subcutaneous nodule in the peri-umbilical area was made. Pilonidal disease should be considered in the differential diagnosis of umbilical nodules that might develop in young, hirsute men.

Original languageEnglish
Pages (from-to)478-481
Number of pages4
JournalNishinihon Journal of Dermatology
Volume73
Issue number5
DOIs
Publication statusPublished - 2011

All Science Journal Classification (ASJC) codes

  • Dermatology

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