Superficial thrombophlebitis

By Dr. Pascal Bafteh · last updated 09/2026

Overview

• Local-conservative: Compression, topical NSAIDs, movement.
• Anticoagulation: For extensive SVT (> 5 cm) Fondaparinux 2.5 mg s.c. for 45 days (CALISTO study). For very extensive SVT, 5 mg over 21 days is also considered.
• Crosse Proximity Rule: If the SVT is < 3 cm from the crosse → treat as DVT (full anticoagulation).
• Ascending SVT — emergency indication for crossectomy: Unlike in varicose vein surgery, where crossectomy is an elective procedure, ascending superficial thrombophlebitis of the great saphenous vein carries an urgent indication: if the thrombus reaches the saphenofemoral junction or extends further proximally despite anticoagulation, crossectomy with ligation of the junction is performed to prevent extension into the common femoral vein and thus pulmonary embolism. It is also an option when anticoagulation is contraindicated — otherwise drug anticoagulation remains the standard.
• Floating thrombus head at the crosse: If the thrombus protrudes freely ("floating") from the saphenofemoral junction into the common femoral vein, the embolic risk is increased and management changes: full therapeutic anticoagulation as for DVT, short-interval follow-up ultrasound (e.g. after 2–3 days) and — with progression, contraindications to anticoagulation or a thrombus crossing the junction — crossectomy/junction ligation. Document the findings (extent, length of the floating portion, distance to the junction). Routine immobilisation is not indicated — even with a floating thrombus, early mobilisation under adequate anticoagulation and compression is the recommended approach.

Differential diagnoses

• Great saphenous vein varicosity
• Telangiectasias (spider veins) and reticular veins
• Corona phlebectatica paraplantaris
• Purpura jaune d’ocre
• Atrophie blanche
• Lipodermatosclerosis

Sources (selection)

1. Linnemann B, et al. Diagnostik und Therapie der Venenthrombose und der Lungenembolie. S2k-Leitlinie, AWMF-Register-Nr. 065/002. Stand: September 2023.

More vascular skin disorders

• Erythromelalgia
• Leukocytoclastic vasculitis
• Lichen aureus
• Great saphenous vein varicosity
• Deep vein thrombosis

Note: This page is intended for medical education and does not replace diagnosis or treatment decisions in individual cases. Treatment and follow-up content is available in the app.