Gross Description - a single soft tissue piece, solid-cystic, brown-white, measuring 75x 45 x 20 mm, weighing 31.0 grams. Cut surface shows a cystic cavity with yellowish fluid and granules.
Microscopic Description - Sections show acute and chronic inflammatory cells with granulation tissue, multinucleated giant cells, and granulomas. Areas of fungal cavity present with thick grains and hyphae of Eumycetoma.
Gram's stain shows negative staining. Giemsa stain shows morphology consistent with Eumycetoma. PAS and GMS stain show histology of Eumycetome - Fungal lesion. There is no evidence of actinomycosis/tuberculosis / any malignancy or other neoplastic etiology.
Diagnosis - Fungal lesion - Eumycetoma, left foot, dorsal aspect.