Subcutaneous abscess due to Pyrenochaeta romeroi in a renal transplant recipient

An infective aetiology, including fungal infection, should be considered in the differential diagnosis of immunocompromised patients presenting with skin lesions. Dematiaceous fungi are recognised as pathogens in organ transplant recipients. Herein, we describe a rare case of a chronic necrotising granulomatous skin lesion caused by Pyrenochaeta romeroi in a renal transplant recipient, and review the existing literature on the topic. To the best of our knowledge, this is the first report of such a case in Singapore. Recognition of infections caused by dematiaceous fungi is important because some strains are difficult to identify and require special molecular diagnostic techniques. Treatment involves surgical excision and long-term antifungal therapy. Data on the optimal antifungal regimen in such a diagnosis is limited.