"extrinsic lesions: destroy adjacent bone as they extend toward the Meckel cave"
"It is named after the German anatomist Johann Friedrich Meckel (the elder) (1724-1774) who wrote his doctoral thesis on the trigeminal nerve (V) which was published in 1748, and contained the first description of the cavum Meckelii 2. Meckel's grandson, also called Johann Friedrich Meckel (1781-1833), and thus nicknamed "the younger", was the eponymous discoverer of Meckel diverticulum 2."
"There are many lesions of Meckel cave:"