FNA Diagnosis of Adult Rhabdomyoma of the Tongue and Floor of the Mouth

Adult rhabdomyoma is a rare benign tumour of skeletal muscle origin and is rarely reported on fine needle aspiration cytology. This tumour has a preference for males older than 40 years of age. The most common sites include the parapharyngeal space, larynx, salivary glands, mouth, and soft tissue of the head and neck region. Fine needle aspiration cytology (FNAC), a less invasive alternative diagnostic method than incisional biopsy, can accurately diagnose this benign neoplasm and avoid aggressive treatment. To the best of our knowledge, only 11 cases of adult rhabdomyoma are diagnosed on FNAC. We herein report one such rare case of adult rhabdomyoma of the floor of the mouth in a 39-year-old male diagnosed with FNAC, emphasising its utility in making a definite diagnosis of adult rhabdomyoma.