Fatal cerebral myiasis secondary to squamous cell carcinoma: case report and scoping review
Abstract
Cerebral myiasis is an exceptionally rare condition caused by infestation with dipteran larvae, with only 20 cases reported in the literature to date. A 78-year-old man presented with anorexia, vomiting, and fever. Physical examination revealed a 7 × 8 cm ulcerated scalp lesion with a necrotic base, purulent discharge, a foul odor, and numerous larvae. Computed tomography demonstrated an osteolytic frontal bone defect accompanied by pneumocephalus and subcutaneous emphysema. The larvae were manually removed, an iodoform dressing was applied, and intravenous ceftriaxone therapy was initiated. Progressive neurological decline prompted repeat imaging, which revealed frontal and parietal cerebritis with abscess formation. Surgical debridement was performed to remove necrotic tissue. Histopathological analysis showed moderately differentiated squamous cell carcinoma with acute osteomyelitis, and cultures yielded multidrug-resistant Pseudomonas aeruginosa. Despite targeted antibiotic therapy and intensive supportive care, the patient died. This case highlights the significant morbidity and mortality associated with cerebral myiasis, particularly when complicated by underlying malignancy and multidrug-resistant infection. Early recognition, prompt surgical intervention, and pathogen-directed antimicrobial therapy are crucial, while comprehensive multidisciplinary management remains essential to optimize outcomes in this life-threatening condition.
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