Abstract
<title>Abstract</title> <p>Background Mucormycosis is a rare, life-threatening fungal infection. Pulmonary mucormycosis is primarily presented in patients with haematological malignancies and solid organ transplants. Pulmonary mucormycosis in uncontrolled diabetes mellitus is rare, as these patients are more commonly associated with rhino-cerebral mucormycosis. As the presentation overlaps with pulmonary tuberculosis, other pulmonary infections, and malignancies, the diagnosis of pulmonary mucormycosis is often delayed. Case Presentation We present a 50-year-old patient with uncontrolled diabetes mellitus, presenting with evidence of right upper lobe consolidation, later diagnosed with pulmonary mucormycosis by histology, supported by imaging. Despite prolonged treatment with liposomal amphotericin B, after surgical resection, the patient passed away following septicaemia. Conclusions This case highlights the importance of early identification and diagnosis of pulmonary mucormycosis, as well as the aggressive initiation of antifungals.</p>