Kimura Disease of the Parotid Gland: A Rare Case Report and Literature Review

Kimura disease (KD) is a rare chronic inflammatory disorder primarily affecting the lymph nodes and soft tissues, predominantly observed in young adult males of Asian descent. The exact etiology of KD remains unknown, but it is believed to involve an abnormal immune response or an allergic reaction. We report the case of a 31-year-old male patient who is medically fit except for having left parotid mass swelling for 7 years which has been increasing in size recently. Lab investigation was reported to be all in normal ranges with some increased eosinophil levels of 25. Computerized tomography and magnetic resonance imaging scans were done on the patient. The final diagnosis was made after fine-needle aspiration which confirmed the diagnosis of KD. Left parotidectomy was done and the patient has shown no signs of recurrence during follow-up. This case highlights the importance of always considering rare disease occurrences in patients with unusual presentations. Surgical excision remains the fundamental treatment, but steroids and radiation are also available options.