Diagnosis and Treatment of Petrous Apex Cystic Lesions
YANG Donghui
LIANG Minzhi
XIA Guangsheng
TAN Xianggao
Abstract：Objective To report authors’experiences in the diagnosis and treatment of cystic lesions in the petrous apex area. Methods Clinical data from 13 patients with petrous apex cystic lesions were retrospectively analyzed. The lesions in-cluded cholesteatoma (n = 8) and cholesterol granuloma (n = 5). All the patients received CT and MRI scan examinations and surgical treatment. Surgical approaches included transotic (n=6), transcochlear (n=1), combined middle fossa and mas-toid (n = 1), transmeatal retrocochlear (n = 1), infralabyrinthine (n = 1), and endoscopic transsphenoidal (n=3) techniques. Results The lesion was either irregular (n=6) or round shaped (n=7) on CT imaging. On MRI, lesion signal was low on T1WI and high on T2WI in 8 cases, and high on both T1WI and T2WI in 5 cases. Patients were followed up for 1~2 years. There was 1 recurrence of petrous apex cholesterol granuloma. Conclusion CT and MRI are important means for early diagnosis of these diseases. A variety of approaches can be used for resection or drainage of petrous apex cystic lesions. Adequate exposure and complete removal of the lesion is critical for cholesteatoma with extensive structural damage, while effective drainage is the most important for cholesterol granuloma. At the same time, the surgical approach should be individually designed for each particular patient, in order to maximize preservation of normal structures and function. In cholesterol granuloma, minimally in-vasive treatments should be considered.
Keywords：Petrous apexCholesteatomaCholesterol g ranulomaSurgery
Publication Date：2013-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 578-581 )