FDG PET/CT in an Interesting Case of Paraneoplastic Relapsing Polychondritis Associated With Adenocarcinoma of the Lung.

Purohit, Priyavrat; Preet, Komal; Mittal, Bhagwant Rai; Kumar, Rajender; Singh, Harmandeep; Sharma, Aman; Singh, Navneet · Clin Nucl Med · 2024

case_report · Level V

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Abstract

Relapsing polychondritis (RP) is an uncommon autoimmune disease that causes inflammation of the cartilage and proteoglycan-rich structures, including the ear, nose, and airway. Paraneoplastic RP is a subset of RP that occurs in some individuals following the detection and treatment of certain types of cancers. FDG PET/CT helps with early diagnosis of RP, identifying inflammatory areas even in the absence of symptoms, and guiding the selection of appropriate biopsy sites. Here, we present a case of adenocarcinoma of the lung presenting with paraneoplastic symptoms of RP as initial presentation, and symptoms were resolved after 3 cycles of chemotherapy.

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