Please select the eligibility criteria that correspond to the clinical trial below.
Title: Long-term Ultrasound Guided Foam Sclerotherapy Versus Classical Surgical Stripping Study
Brief Summary: The aim of this study is to investigate the long-term follow-up of the previously conducted FOAM study.


Options:
A: Inclusion Criteria:

* all patients included in previous FOAM study

Exclusion Criteria:

* no received informed consent
B: Inclusion Criteria:

1. Age ≥ 21 years and ≤ 70 years of age at the time of screening
2. Reflux in the great saphenous vein (GSV) greater than 0.5 sec reflux
3. One or more of the following symptoms related to the target vein: aching, throbbing, heaviness, fatigue, pruritis, night cramps, restlessness, generalized pain or discomfort, swelling
4. GSV diameter while standing of 3-12 mm throughout the target vein as measured by Duplex ultrasound
5. Clinical, etiology, assessment and pathophysiology (CEAP) classification of C2 (if symptomatic) - C4b
6. Ability to walk unassisted
7. Ability to attend follow-up visits
8. Ability to understand the requirements of the study and to provide informed consent

Exclusion Criteria:

1. Life expectancy \< 1 year
2. Active treatment for malignancy other than non-melanoma skin cancer
3. Symptomatic peripheral arterial disease with ankle-brachial index (ABI) \<0.89
4. Daily use of narcotic or non-steroidal anti-inflammatory pain medications to control pain associated with GSV reflux
5. Current, regular use of systemic anticoagulation (e.g., warfarin, heparin)
6. Previous or suspected deep vein thrombosis (DVT) or pulmonary embolus (PE)
7. Previous superficial thrombophlebitis in GSV
8. Previous treatment of venous disease in target limb, other than spider vein treatment
9. Known hypercoagulable disorder
10. Conditions which prevent vein treatment with either RFA or VenaSeal SCS
11. Immobilization or inability to ambulate
12. Pregnant prior to enrollment
13. Tortuous GSV, which, in the opinion of the investigator, will limit catheter placement or require more than one primary access site
14. Aneurysm of the target vein with local diameter \>12 mm
15. Significant, incompetent, ipsilateral small saphenous, intersaphenous or anterior accessory great saphenous vein(s)
16. Known sensitivity to cyanoacrylate (CA) adhesives
17. Current participation in another clinical study involving an investigational agent or treatment, or within the 30 days prior to enrollment
18. Patients who require bilateral treatment during the next 3 months
19. Patients who require additional ipsilateral treatments on the same leg within 3 months following treatment
C: Inclusion Criteria:

* Age ≥18 years and ≤ 70 years of age.
* Symptomatic primary Great Saphenous Vein "GSV" incompetence diagnosed by clinical symptoms, with or without visible varicosities, and confirmed by duplex ultrasound imaging.
* CEAP classification of C2, C3 or C4.
* Ability to walk unassisted.
* Ability to attend follow-up visits.
* Ability to understand the requirements of the study and to provide written informed consent.
* "GSV" on standing pre-procedure Doppler Ultrasound ≥3mm and ≤10mm (maximum diameter).

Exclusion Criteria:

* Life expectancy \< 1 year.
* Regular pain medication.
* Anticoagulation including Heparin or Coumadin.
* Previous Deep Vein Thrombosis "DVT".
* Previous superficial thrombophlebitis in "GSV".
* Previous venous treatment on target limb.
* Known Hyper-coagulable disorder.
* Conditions which prevent routine vein treatment like:

  * Acute disease,
  * Immobilization or inability to ambulate, and
  * Pregnancy.
* Tortuous "GSV", which in the opinion of the Investigator will limit catheter placement. (no 2 primary access sites allowed).
* Incompetent ipsilateral small saphenous or anterior accessory great saphenous vein.
* Known sensitivity to the cyanoacrylate "CA" adhesive.
* Current participation in another clinical study involving an investigational agent or treatment, or within the 30 days prior to enrollment.
D: Inclusion Criteria:

* Primary, symptomatic, varicose veins.
* Isolated Saphenofemoral junction (SFJ) incompetence leading to long saphenous (LSV) reflux on duplex ultrasound.
* LSV of 4mm diameter at the knee.
* Ability to give informed written consent.

Exclusion Criteria:

* Inability to give informed written consent.
* Symptomatic or complicated varicose veins not attributable to SFJ/LSV reflux.
* Evidence of deep venous reflux on duplex scan.

Answer: A