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February 20, 2026HaiganOpen Access

A Case Report of Colloid Adenocarcinoma with Extrusion of Mucous Mass onto the Pleural Surface

R Sezaki Akira Okada Tadashi Aoki

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Key Points

To describe a case of colloid adenocarcinoma with a mucous mass on the pleural surface and discuss possible causes.
Reported a surgical case of primary lung cancer
Utilized imaging techniques like CT for diagnosis
Performed a bronchoscopic lung biopsy to confirm adenocarcinoma
Conducted a left lower lobectomy due to tumor characteristics
Patient had a 68 mm tumor in the left lung with no lymph node or distant metastasis
During surgery, a mucous mass was noted on the pleural surface
Pathology confirmed the presence of colloid adenocarcinoma
Lymph node metastasis was found in rapid histological examination

Implication

A case report reveals unique pleural surface involvement in lung cancer, indicating potential biopsy-related injury.

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Cite This Study

Sezaki et al. (2026) studied this question.

synapsesocial.com/papers/69a286850a974eb0d3c0175c https://doi.org/10.2482/haigan.66.32

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Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

1Primary colloid adenocarcinoma of lung: A case report and review of literatureCase Report · 2026
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3A case of primary lung adenocarcinoma with mixed subtypes, predominantly of clear cell adenocarcinoma-Cytological and histopathological examination-Original Research · 2010
4C78-44 Primary Pulmonary Adenocarcinoma Presenting as Massive Recurrent Pleural Effusion: A Diagnostic ChallengeCase Report · 2026
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