This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fibroids, Subject name: Gynaecology & Obstetrics
[{'content': 'In Leiomyoma of uterus which of the following changes does not commonly occur: \nSelect and explain. \nA. Fatty degeneration, B. Sarcomatous Degeneration, C. Hyaline degeneration, D. Atrophy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Sarcomatous degeneration is extremely rare, and the incidence is not more than 0.5% Secondary Changes (Degenerations) and Complications Associated with Leiomyomas Hyaline change, cystic degeneration and atrophy Calcareous degeneration, osseous degeneration Red degeneration Sarcomatous change(Rarest) Torsion, haemorrhage Infection/ulceration, paicularly in the dependent pa of a submucous polyp Inversion of the uterus Endometrial carcinoma associated with fibromyoma(3% cases)', 'role': 'assistant'}]