This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
[{'content': 'All of the following imaging finding is diagnostic of Adenomyosis \nSelect and explain. \nA. Thickness of low signal intensity junctional zone >12mm on T2 -  weighted images., B. Rain shower appearance of myometrium with coarsened echotexture., C. Linear striations and subendometrial echogenic nodular appearance on USG., D. Calcifications seen on CT - Scan.', 'role': 'user'}, {'content': 'Answer: D \nExplanation: CT - is insensitive for adenomyosis. Presence of calcifications strongly favours fibroids rather than adenomyosis.', 'role': 'assistant'}]