This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endometriosis, Adenomyosis, Subject name: Gynaecology & Obstetrics
[{'content': 'Which of these is not an ultrasound finding consistent with diagnosis of adenomyosis? \nSelect and explain. \nA. Uterine enlargement, B. Subendometrial echogenic linear striations, C. Thickening of transitional zone, D. Encapsulated hypoechoic lesion', 'role': 'user'}, {'content': 'Answer: D \nExplanation: USG findings in adenomyosis Uterine enlargement not explained by leiomyoma Subendometrial echogenic linear striations Heterogenous echotexture Cystic anechoic spaces or hypoechoic areas: lakes of endometrial blood Junctional zone between endometrium and myometrium>12 mm (normal 5-8 mm) Obscured endo-myometrial interface', 'role': 'assistant'}]