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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Bronchoalveolar carcinoma variants are -
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The correct answer is  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.