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What is Fisch classification is used for classifying which of the following malignancy? and explain in detail?
The two grading systems which has been developed to classify glomus tumors are Fisch classification and Glasscock - Jackson classification. Fisch classification of glomus tumors: Class A: Tumors limited to the middle ear cleft. Class B: Tumors limited to the tympanomastoid area without destruction of bone in the infralabrynthine compament. Class C: Tumors extending into and destroying the bone of the infralabrynthine and the apical compaments of the temporal bone. Class D: Tumors with intracranial intradural extension.