Background: The frequency and severity of post-thrombotic sequelae after spontaneous axillaryâ€“subclavian venous thrombosis remain poorly known.
Objective: To determine the late sequelae of conventionally treated spontaneous axillaryâ€“subclavian venous thrombosis.
Design: Cross-sectional study.
Setting: University department of vascular medicine.
Patients: 54 patients seen during an 18-year period (mean follow-up, 5 years).
Measurements: Scores for the severity of post-thrombotic symptoms were graded on a numerical rating scale ranging from 0 to 10 and on a 6-point verbal rating scale. Ultrasonographic sequelae were classified as grade 0, normal flow; grade 1, moderate obstruction; or grade 2, severe obstruction or occlusion.
Results: Verbal scores were â€œnil/negligibleâ€ in 47% of patients and â€œsevere/intolerableâ€ in 13%; numerical scores were 0 to 3 in 78% of patients and 7 to 10 in 9%. Grade 2 ultrasonographic sequelae were found in 22% of cases. No relation was seen between ultrasonographic sequelae and symptom severity scores.
Conclusion: The overall clinical outcome of spontaneous axillaryâ€“subclavian venous thrombosis is good, and there is no relation between the severity of late symptoms and ultrasonographic sequelae.