<prompt> Commonest type of Anal canal Ca is :Sq. cell CaAdeno CaAdenoacanthomaPapillary type  <response>: Ans. is a ie Squamous cell Ca Mainly 3 types of malignant neoplasm are seen in anal canalSquamous cell Ca MCBasal cell Ca IInd meMelanomaRememberMC type of rectal colon Ca - Adenocarcinoma. 