This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neoplasia, Subject name: Pathology
[{'content': 'Benign tumour of the smooth muscle is called: \nSelect and explain. \nA. Leiomyoma, B. Rhabdomyoma, C. Fibroma, D. Angiomyoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans: a (Leiomyoma) Ref:Robbins, 7th ed, p. 1322More about tumours of muscular origin.Smooth muscleI. Benign-Leiomyoma* Single* Multiple (AD trait)II. Malignant- LeiomyosarcomaM/E:- Spindle cells with cigar shaped nucleiSkeletal muscleRhabdomyosarcoma:* MC soft tissue tumour of childhood* MC site - head & neck region* Typical cell - tadpole or strap cells* Types: Embryonal, alveolar-, pleomorphic* MC type: Embryonal rhabdomyosarcoma* LC type: Pleomorphic rhabdomyosarcoma', 'role': 'assistant'}]