This article explores a rare congenital middle ear malformation known as congenital enlargement of the bony Eustachian tube (ET). The study examines the clinical and radiological features of nine patients with this condition and highlights the importance of diagnosing and treating it. The study found that all patients with enlarged bony ETs also had various malformations in the external, middle, and inner ears. The article provides measurements and images of the enlarged bony ETs, as well as details about other associated abnormalities. While this condition can cause hearing loss, more research is needed to fully understand it. [Extracted from the article]