A landscaper noticed a hard, unmovable lump under the skin of his index finger but decided to ignore it. A month later, the lump ulcerated to present a necrotic appearance, and two more lesions...

A landscaper noticed a hard, unmovable lump under the skin of his index finger but decided to ignore it. A month later, the lump ulcerated to present a necrotic appearance, and two more lesions developed further up the wrist and forearm. A histologic stain of material from deep in the lesions showed elongated yeast cells resembling cigars. What disease is suspected?

a. Mycetoma

b. Sporotrichosis

c. Chromoblastomycosis

d. Blastomycosis