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Patients were considered for RA-RMR in case of a residual tumor between 10 and 50\u00a0mm at cross-sectional computed tomography (CT) imaging located ventrally or laterally from the aorta or vena cava, with normalized tumor markers following completion of chemotherapy, and no history of retroperitoneal surgery.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>A total of 45 patients were included in the analysis. The Royal Marsden stage before chemotherapy was IIA in 13 (28.9%), IIB in 16 (35.6%), IIC in 3 (6.7%) and IV in 13 patients (28.9%). The median residual tumor size was 1.9\u00a0cm (interquartile range [IQR] 1.4\u20132.8; range 1.0\u20135.0). Five procedures (11.1%) were converted to an open procedure due to a vascular injury (<jats:italic>n<\/jats:italic>\u2009=\u20092), technical difficulty (<jats:italic>n<\/jats:italic>\u2009=\u20092) or tumor debris leakage (<jats:italic>n<\/jats:italic>\u2009=\u20091). A postoperative adverse event occurred in two patients (4.4%). Histopathology showed teratoma, necrosis and viable cancer in 29 (64.4%), 14 (31.1%), and two patients (4.4%), respectively. After a median follow-up of 41\u00a0months (IQR 22\u201370), one patient (2.2%) relapsed in the retroperitoneum. The one- and 2-year recurrence-free survival rate was 98%.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>RA-RMR is an appropriate treatment option in selected patients, potentially providing excellent cure rates with minimal morbidity. Long-term outcome data are needed to further support this strategy and determine inclusion and exclusion criteria.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00345-020-03437-z","type":"journal-article","created":{"date-parts":[[2020,9,21]],"date-time":"2020-09-21T11:02:32Z","timestamp":1600686152000},"page":"1969-1976","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Clinical outcome of robot-assisted residual mass resection in metastatic nonseminomatous germ cell tumor"],"prefix":"10.1007","volume":"39","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9722-8487","authenticated-orcid":false,"given":"Joost M.","family":"Blok","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Henk G.","family":"van der Poel","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J. 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