Abstract
KEY CLINICAL MESSAGE: Azathioprine, used for vasculitis and connective tissue diseases, carries long-term cancer risks. This case report raises awareness among healthcare providers about such risks and emphasizes the need for taking necessary precautions to avoid them while treating such diseases. ABSTRACT: We present an Azathioprine-induced lymphoma case in a 51-year-old male patient with Takayasu arteritis who presented with painless cervical swelling, itching, weight loss, and decreased appetite. This case report aims to increase awareness of the potential long-term cancer risks associated with azathioprine use in the treatment of chronic diseases.