Kimura disease and eosinophilic granulomatosis with polyangiitis: Clinical and imaging overlap of 2 immune-mediated conditions.

We present the clinical and head and neck imaging findings in an adult male patient diagnosed with both Kimura disease (KD) and eosinophilic granulomatosis with polyangiitis (EGPA). These 2 rare diseases have distinct as well as overlapping clinical features and pathophysiological mechanisms, and their coexistence created a challenging diagnostic and therapeutic scenario. This case highlights the importance of considering overlapping features in complex immune-mediated conditions to establish an accurate diagnosis and formulate an appropriate management plan.