Glomus Tympanicum

**Definition:** A highly vascular ovoid body of chemoreceptive tissue lying adjacent to the TYMPANIC CAVITY. It is derived from NEURAL CREST tissue and is considered part of the diffuse neuroendocrine system. It is the site of a rare neoplasm called a GLOMUS TYMPANICUM TUMOR.

**Tree numbers:** - A06.688.267 - A08.675.650.915.500.600.360 - A08.713.228 - A08.800.950.500.600.360 - A09.246.397.400 - A11.671.650.915.500.600.360