An unusual presentation of mycetoma around knee joint as a subcutaneous mass – A case report

INTRODUCTION: Mycetoma is a form of chronic granulomatous disease which involves subcutaneous tissues and causes bone destruction in advanced stages. The characteristic features are sinus formation, granules formation, and mass in subcutaneous region. CASE REPORT: A 19-year-old male presented to our out-patient clinic with complaint of a painless swelling around the medial aspect of the right knee joint for 8 months with no sinus or discharge of granules. Pes anserinus bursitis was thought of as differential diagnosis for the present condition. “Staging-classification of mycetoma” is commonly used for classifying mycetoma and as per classification, the present case had Stage-A. CONCLUSION: Single-stage local excision was performed and supplemented with anti-fungal agent for 6 months, which showed good outcome at the final follow-up of 13 months.