the exceptions are a ) morphologically malignant-appearing tumors following a benign course ( e.g. , canine histiocytoma , canine seminoma , equine sarcoid ) and b ) morphologically differentiated tumors exhibiting an unpredictable prognosis ( e.g. , canine pericytoma , acanthomatous epulis , myxoma , follicular thyroid cell carcinoma , etc . ) .
C1511002
b
C0007634
cell