Mycetomas are localized infections that involve cutaneous and subcutaneous tissue, fascia, and bone.
Lesions consist of abscesses, granulomata, and draining sinuses.
Following implantation of the etiologic agent, the primary lesion becomes locally invasive, indolent, tumorlike. It may also present with small, painless subcutaneous swellings. The lesions rupture, resulting in sinus tracts, swelling and distortion of the infected body part. Surgical debridement may be necessary, and amputation is sometimes the final step. The ulcer or sinus tract opening is surrounded by raised or flat margins.