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Isolated renal mucormycosis is rare in the immunocompetent host. We retrospectively analyzed all histopathology reports of nephrectomy specimens and renal biopsies from our department in the last year. Three patients of isolated renal mucormycosis were identified. All three patients presented with acute abdomen and renal failure. None had a preceding known predisposing disease for mucormycosis. Ante mortem diagnosis was made in one patient. Fungal culture was positive in one case. We emphasize that isolated renal mucormycosis may affect immunocompetent host and greater clinical suspicion is required for prompt treatment in view of poor prognosis associated with renal mucormycosis.

The authors describe a case of cerebellopontine (CP) angle melanotic lesion in a 38-year-old man who presented with features of CP angle syndrome 12 years ago. Computed tomography scan showed a mass lesion in the left CP angle, which was excised. Biopsy was suggestive of melanoma due to abundance of melanin. After 12 years, he had local recurrence and was re-operated. On reviewing the previous and later biopsy, final diagnosis of melanocytoma was made because of additional finding of absence of mitosis and macronucleoli, which were overlooked in the previous biopsy. Awareness of this finding reduces the possibility of diagnostic error in melanotic tumors. Reliance on the presence of abundance of melanin as the sole criterion for diagnosing melanoma resulted in erroneous diagnosis in our case. The case is discussed in the light of available literature.