Subungual exostosis.

Area of Science:

• Orthopedics
• Dermatology
• Oncology

Background:

• Subungual exostosis is a rare benign bone tumor originating from the distal phalanx, commonly affecting the hallux.
• Accurate diagnosis is crucial to differentiate it from various benign and malignant subungual neoplasms.

Observation:

• This case highlights subungual exostosis discovered incidentally during a routine full-body skin examination.
• The lesion, though benign, necessitates careful evaluation to exclude other differential diagnoses.

Findings:

• Radiography of the affected digit is a key non-invasive diagnostic tool for subungual exostosis.
• Histopathological examination confirms the benign nature of the tumor.

Implications:

• Early and accurate diagnosis through imaging is essential for appropriate patient management.
• Surgical excision offers an effective and well-tolerated treatment for symptomatic subungual exostosis.