Orbital Involvement in Kimura's Disease Presenting as Diffuse Bilateral Extraocular Muscle Enlargement: A Case Report.

Kimura's disease (KD) is a rare, chronic inflammatory disorder characterized by angiolymphoid hyperplasia, peripheral eosinophilia, and elevated serum immunoglobulin E levels. It primarily affects young Asian males and typically involves the head and neck region, especially near the mandible and postauricular regions. Orbital involvement is unusual and extraocular muscle (EOM) involvement is exceedingly rare, with only a few cases reported in the literature. The present report describes a case of surgically confirmed KD in a 16-year-old male, involving the bilateral EOM, lacrimal gland, and left parotid gland.