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Conservative Endometrioma Surgery

BLAST: a Randomized Controlled Trial on Conservative Endometrioma Surgery Using the CO2 Laser: the Combined Technique Versus CO2 Laser Vaporization Only

Status
Recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04151433
Acronym
BLAST
Enrollment
92
Registered
2019-11-05
Start date
2019-10-24
Completion date
2026-12-31
Last updated
2024-12-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Endometrioma, Endometriosis Ovary

Brief summary

To study which surgical technique offers better results in treating endometriomas in terms of ovarian reserve preservation. The 2 conservatives techniques used are: 1. The combined technique 2. CO2 laser vaporization only Ovarian reserve will be assessed by consecutive measurements of AMH serum levels before and after surgery.

Interventions

PROCEDUREComparison between 2 different laparoscopic techniques in conservative surgical treatment of endometriomas (both arms are existing and accepted surgical strategies).

cf. different arms

Sponsors

GZA Ziekenhuizen Campus Sint-Augustinus
CollaboratorOTHER
Centre Hospitalier Régional de la Citadelle
CollaboratorOTHER
Cliniques universitaires Saint-Luc- Université Catholique de Louvain
CollaboratorOTHER
Universitaire Ziekenhuizen KU Leuven
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 40 Years
Healthy volunteers
No

Inclusion criteria

Population: patients planned for laparoscopic CO2 laser surgery for endometriotic cysts. Inclusion Criteria: * Age: 18 - 40 years (both inclusive) * Unilateral endometriotic cysts with a mean diameter of \>=2.5cm and ≤8 cm, measured in 3 dimensions. * Presence of a contralateral endometrioma of ≤ 2cm is allowed * Complaining of infertility and/or pain * BMI ≤35 * Use of contraception (combined or Progesteron only) for at least 4 weeks before surgery

Exclusion criteria

* Incomplete surgery for the pelvis * Contra-indication for the use of contraception (combined or Progesteron only) * Use of GnRH analogues preoperatively and in the first 3 months postoperatively * (History of) hysterectomy * Prior unilateral oophorectomy * Pituitary/hypothalamic disorders * Suspected malignancy * Contralateral endometrioma of \>2 cm * AMH \<0.7 preoperatively * Pregnancy

Design outcomes

Primary

MeasureTime frameDescription
AMH levels 3 months postoperatively3 months postoperativelyTo assess the effect of conservative laparoscopic treatment of endometrioma(s) on ovarian reserve as reflected by AMH in patients planned for laparoscopic CO2 laser surgery. For the primary outcome evaluation of serum AMH will be done before (baseline) and after (at 3 months follow up) laparoscopic treatment of endometrioma(s).

Countries

Belgium

Contacts

Primary ContactCarla Tomassetti, MD, PhD
carla.tomassetti@uzleuven.be+3216340825
Backup ContactCeline Bafort, MD
celine.bafort@uzleuven.be+3216340088

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026