Vesicourachal Diverticulum: An Uncommon Incidental Finding on Staging ¹⁸F-FDG PET/CT in a Patient with Suspected Malignant Transformation of Neurofibromatosis

Abstract

In a 32-y-old man with neurofibromatosis type 1, ¹⁸F-FDG PET/CT incidentally revealed a vesicourachal diverticulum, a rare anatomic variant. The PET/CT, performed for staging a malignant peripheral nerve sheath tumor, highlighted a distinctive ¹⁸F-FDG–avid pattern crucial for accurate diagnosis. Recognizing such features enhances disease assessment and clarifies distinctions between benign urogenital anomalies and malignancies in ¹⁸F-FDG PET/CT staging.