Post-Operative Collection Sclerotherapy

Background and indications

Image-guided percutaneous sclerotherapy involves draining then injecting a sclerosing agent into a recurrent post-operative fluid collection (seromas, lymphoceles, bilomas) to cause cavity wall adhesion and prevent recurrence. Post-surgical lymphoceles (after pelvic or inguinal lymph node dissection) and post-surgical seromas are the most common indications.

Pre-procedure assessment

Assessment includes recent imaging (ultrasound or CT) documenting the collection and its anatomical relationships, blood tests (CBC, CRP, liver panel if biloma), and prior analysis of aspirated fluid (cytology, biochemistry, bacteriology). Absence of communication with biliary or urinary tracts must be verified before sclerotherapy.

Procedure

Under local anesthesia and ultrasound or CT guidance, a drain (8-12F) is positioned in the collection. Fluid is aspirated. The sclerosing agent (95% ethanol, betadine, or doxycycline) is injected, left in contact for 15-30 minutes, then re-aspirated. The process may be repeated 2-3 times over several days if the drain is left in place. The procedure takes 20 to 40 minutes.

Results and scientific evidence

Success rate (complete resolution) of lymphocele sclerotherapy is 80-95% after 1-3 sessions. For seromas, resolution rate is 70-85%. These results are comparable to surgery (marsupialization) with lower morbidity.

Risks and complications

Pain during sclerosing agent injection (30-50%, transient), transient fever (10-15%), secondary infection (< 3%). With ethanol use, monitoring is needed (risk of systemic absorption if large cavity).

Recovery

The drain may be left in place 2-7 days for repeated sessions. After removal, return to activities is immediate. Ultrasound follow-up at 1 and 3 months.

Practical information

The procedure is performed as an outpatient or short inpatient stay depending on the case. It is performed by an interventional radiologist, in coordination with the treating surgeon.