Classification of medical image registration and its application in radiotherapy / 中华放射肿瘤学杂志

Collision neoplasm is a rare clinical disease which characterized by the existence of two distinct neoplasms emerging in the same anatomic location,It almost occured in any part of the body. Case reports of collision neoplasm is relatively few.There is no domestic relevant summary.The author read the reports in recent five years in the pubmed database,WANFANG data and CNKI to point out the location,common pathological types of collision tumor,pathogenesis and so on. Aim to help us better understand collision tumor.