Paraneoplastic Pemphigus Associated With Castleman Disease Detected by 18F-FDG PET/CT

A 36-year-old woman suffering from oral ulcerations, skin rash, and dyspnea was suspected of having paraneoplastic pemphigus. An 18F-FDG PET/CT was performed to detect the underlying neoplasms and revealed an 18F-FDG–avid mass in the lower right retroperitoneum. The mucocutaneous lesions and dyspnea were relieved after the tumor excision, and the pathology indicated Castleman disease.

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