Cambium layer is seen in:: (A) Embryonal rhabdomyosarcoma, (B) Pleomorphic rhabdomyosarcoma, (C) Alveolar rhabdomyosarcoma, (D) Undifferentiated rhabdomyosarcoma
Answer is A. Ans. (a) Embryonal rhabdomyosarcoma(Ref: Robbins 9th/pg 1253)In Sarcoma botryoides, a variant of embryonal rhabdomyosarcoma, histology shows a cambium layer where the tumors about the mucosa of an organ, they form a submucosal zone of hypercellularity.