imaging of dermoid tumours of the ovary

Question Number 1362

Question:
the following are true of the imaging of dermoid tumours of the ovary

a) the presence of fat density in the region of the lower quadrants is a highly specific sign for its diagnosis
b) the Rokitansky nodule is usually single
c) ultrasound has a sensitivity of 50% for its diagnosis
d) malignant degeneration is usually within the dermoid nodule
e) the mass is of increased signal intensity on T2 -weighted MR


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