Bronchioloalveolar carcinoma

Bronchoalveolar carcinoma is a special subtype of lung adenocarcinoma, accounting for about 3% to 30% of the entire non-small cell lung cancer. Compared with other non-small cell lung cancer subtypes, bronchioloalveolar carcinoma has unique clinical manifestations, tissue biological behavior, epidemiological characteristics, and special treatment response and prognosis. With the deepening of people's understanding, this concept has gradually become clear and perfect. Until 1999, the World Health Organization strictly defined bronchioloalveolar carcinoma as a lung cancer that spreads scaly along the alveolar structure without stroma, blood vessels, and pleural invasion. This definition is still in use today. In actual cases, bronchioloalveolar carcinoma is often mixed with other types of adenocarcinoma.

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