<prompt> Bronchoalveolar carcinoma variants are -Clara cellAdenosarcomaMucinous typeType II pneumocyte  <response>: Ref:Textbook of pathology Harsh mohan 6th edition,page no. 501 Bronchiolo-alveolar carcinoma is characterised by cuboidal to tall columnar and mucus-secreting epithelial cells growing along the existing alveoli and forming numerous papillary structures. Ultrastructurally, these tumour cells resemble Clara cells or less often type II pneumocytes. 