This case is reported because of the unusual occurrence of a simple lipoma of the tongue. A survey of the modern textbooks of oncology and pathology fails to reveal any allusion to this condition, though the presence of lipoma in many other tissues and organs is well known. The patient, M. C., a white woman aged 58, was admitted to the Illinois Masonic Hospital in March 1948 for treatment of a comminuted fracture of the patella. This was accomplished by open reduction, with a good result. Her peculiar speech drew my attention to a rounded mass bobbling around in her mouth. As she spoke she seemed to try to keep the mass from slipping out of her mouth. This mass was about 2 cm. in diameter and attached by an elongated sessile base to the right anterolateral free border of the tongue, near the tip. It was of a soft