Q1) For carcinoma of unknown primary with no lesion found on clinical examination,
A.blind biopsies detect primary 40% times
B.tonsillectomies find primary 20% times
c.PET find primary 60% times
d.CXR finds primary 20% times
Ans
PET is more sensitive than CT in identifying the primary lesion but cannot detect unknown primary tumors with more than 50% sensitivity
Q2. Not a definition under RECIST criteria,
a.>20mm , on CXR
b.>10mm , on CT,5mm cuts
c.>20mm , on USG
d.>20mm , on CT,10mm cuts
Ans d
Measurable Tumour lesions: Must be accurately measured in at least one dimension (longest diameter in the plane of measurement is
to be recorded) with a minimum size of:
• 10 mm by CT scan (CT scan slice thickness no greater than 5 mm)
• 10 mm caliper measurement by clinical exam (lesions which cannot be accurately measured with calipers should be recorded as non-measurable).
• 20 mm by chest X-ray
lymph node must be P15 mm in short axis when assessed by CT scan (CT scan slice thickness
recommended to be no greater than 5 mm)