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  • Title: [CT scan and clinical diagnosis of parasellar lesions--analysis of 91 cases].
    Author: Tan FL.
    Journal: Zhonghua Zhong Liu Za Zhi; 1989 Jul; 11(4):291-3. PubMed ID: 2625113.
    Abstract:
    Ninety-one patients with parasellar lesions proved by pathology and surgery from July 1982 to May 1987 and 22 patients misdiagnosed clinically or by CT are reported. The authors found that: 1. Besides the main group of parasellar lesions such as pituitary tumor, meningioma, and craniopharyngioma, some rare disease like glioma, pituitary carcinoma, chordoma, olfactory neuroblastoma, Rathke's pouch and tuberculoma of optic nerve were also found which comprised 12% (11/91) in this series. They should be considered in differential diagnosis; 2. Correct diagnosis was made when CT findings conformed well with the clinical features. Over-emphasis of clinical features or neglect of CT findings should be discouraged as they may lead to erroneous diagnosis; 3. In this series, the highest correct diagnosis rates were: pituitary tumor (95%), parasellar meningioma (78%) and craniopharyngioma (50%). It is difficult to make a correct diagnosis for these rare disease entities before operation; and 4. CT scan cannot completely replace angiography and ventriculography when they are needed for differential diagnosis.
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