Lesions of the pituitary gland:
A- Pituitary microadenomas are usually hypointense on T1 MR. True ( 80-90% are hypointense on T1 while 30–50% are hyperintense on T2).
B- Microadenoma are usually shows increase enhancement on T1 MR. False… but true in CT
C- Deviation of the infundibulum is a reliable indicator of microadenoma even if no mass seen on CT or MRI. False (wide range of normal variation).
D- The histology of micro and macro adenomas is quite different. False
E- If bilateral carotid artery displacement is present the cavernous sinus invasion by tumor is unlikely. False
A- Pituitary microadenomas are usually hypointense on T1 MR. True ( 80-90% are hypointense on T1 while 30–50% are hyperintense on T2).
B- Microadenoma are usually shows increase enhancement on T1 MR. False… but true in CT
C- Deviation of the infundibulum is a reliable indicator of microadenoma even if no mass seen on CT or MRI. False (wide range of normal variation).
D- The histology of micro and macro adenomas is quite different. False
E- If bilateral carotid artery displacement is present the cavernous sinus invasion by tumor is unlikely. False
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Radiology MCQ