[Alveolar cancer (author's transl)]

Area of Science:

• Pulmonology
• Oncology
• Pathology

Context:

• The classification of lung cancers remains a subject of debate.
• Distinguishing between alveolar and bronchial lung cancers is critical for accurate diagnosis and treatment.

Purpose:

• To assert that alveolar cancer is the sole true lung cancer.
• To challenge the widespread use of the term 'bronchiolo-alveolar cancer'.
• To support this claim with original case studies and a literature review.

Summary:

• The study analyzes 12 original cases and relevant literature to differentiate alveolar cancer from bronchial cancer.
• Anatomopathological data, bronchial cytology, and surgical tissue samples were examined to assess diagnostic reliability.
• Follow-up on 9 operated cases with localized involvement showed 5 patients surviving at 2 years.
• Scintigraphy with labelled bleomycin proved disappointing, with only one positive result out of four tests.
• Electron microscopy and tissue culture data suggest a histogenesis originating from type II pneumocytes.

Impact:

• This research clarifies lung cancer classification, potentially improving diagnostic accuracy.
• It provides evidence supporting a distinct origin for alveolar cancer, influencing future research directions.
• Findings may impact treatment strategies and prognostic assessments for lung cancer patients.