{"entity":{"id":"segmentectomy","kind":"term","name":"Segmentectomy (sublobar resection)","aka":["sublobar resection","wedge resection","segmentectomies"],"tldr":"Removing only a segment or wedge of a lung lobe rather than the whole lobe, sparing breathing capacity.","summary":"Once reserved for patients who could not tolerate lobectomy, anatomical segmentectomy became a standard option for peripheral tumours ≤2 cm after JCOG0802 (2022) showed better overall survival and CALGB 140503 showed non-inferior disease-free survival. Wedge resection is a non-anatomical version with less lymph node clearance. The same lung-sparing logic drives lung-sparing surgery in mesothelioma and parenchyma-sparing liver resection.","asOf":"2026-09-09","wikipedia":"https://en.wikipedia.org/wiki/Segmental_resection","links":[{"label":"Wikipedia","url":"https://en.wikipedia.org/wiki/Segmental_resection"},{"label":"NICE NG122: lung cancer, management","url":"https://www.nice.org.uk/guidance/ng122/chapter/Management"}],"tags":[],"related":["lobectomy"],"cancers":["nsclc","lung-cancer"],"sections":["surgery"],"technologies":[],"targets":[],"drugs":[],"companies":[],"institutions":[],"pathways":[],"terms":[],"trials":[],"people":[],"bottlenecks":[],"keyPapers":[],"journals":[],"dependsOn":[],"notes":["Lung cancer: NICE NG122 (1.5.5) says that for people with stage 1 to 2a disease who decline lobectomy or in whom it is contraindicated, offer radical radiotherapy with stereotactic ablative radiotherapy or sublobar resection. NICE's rationale says both give better survival than conventionally fractionated radiotherapy, and that the evidence does not show which of the two is better, which is why the choice is a shared one rather than a rule."],"category":"Procedures"},"route":"/terms/segmentectomy/","neighbours":{"term":[{"id":"lobectomy","kind":"term","name":"Lobectomy","route":"/terms/lobectomy/"},{"id":"sublobar-resection","kind":"term","name":"Sublobar resection (segmentectomy and wedge)","route":"/terms/sublobar-resection/"}],"cancer":[{"id":"lung-cancer","kind":"cancer","name":"Lung cancer (all types)","route":"/cancers/lung-cancer/"},{"id":"nsclc","kind":"cancer","name":"Non-small-cell lung cancer","route":"/cancers/nsclc/"},{"id":"resectable-nsclc","kind":"cancer","name":"Resectable stage I to III non-small-cell lung cancer","route":"/cancers/resectable-nsclc/"}],"section":[{"id":"surgery","kind":"section","name":"Surgery & Interventional","route":"/fronts/surgery/"}],"trial":[{"id":"calgb-140503","kind":"trial","name":"CALGB 140503 (Alliance)","route":"/trials/calgb-140503/"},{"id":"jcog0802","kind":"trial","name":"JCOG0802 / WJOG4607L","route":"/trials/jcog0802/"}]}}