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Background: Information is lacking as to the management of patients with superficial venous thrombosis (SVT) whose profile has been excluded from trials, such as patients with active cancer, severe renal impairment, or pregnancy., Objectives: To describe the frequency and management of SVT occurring in these situations., Methods: We retrospectively analyzed the frequency, management and evolution of all patients with isolated SVT associated with either active cancer, severe renal impairment, or pregnant or postpartum women, diagnosed in 2 university hospital between January 1st, 2015 and December 31st, 2016., Results: Of the 594 isolated SVTs individualized from the 7941 reports screened, 149 SVTs (105 in the upper extremity, 44 in the lower extremity) were analyzed: 94 (63%) associated with active cancer, 27 (18%) with severe renal impairment and 30 (20%) pregnant or postpartum women. SVT was treated with anticoagulant in 34 (36%) patients with cancer, 3 (11%) patients with severe renal impairment and 19 (63%) pregnant or postpartum women. At 3-month, 16 patients (10.8%) had a further venous thromboembolic event, 8 (5.4%) major bleeding, and 9 (6.1%) died., Conclusion: SVT in patients with active cancer, severe renal impairment and pregnant or postpartum women represents a quarter of isolated SVTs diagnosed. Heterogeneity of treatment patterns mainly affects patients with cancer and severe renal impairment. Poor outcomes, although probably linked to morbidity, call for dedicated research in these specific situations.