Clinical trial · Interventional
Localization of Point A in Cervical Cancer
Localization of Anatomic Point A in Cervical Cancer Patients
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
Point A, the major critical point for dose specification of intracavitary brachytherapy, is defined as the crossing of uterine artery and ureter in treatment of cervical cancer. However, the currently advocated systems use hypothetical point A (HPA) to estimate the dosimetry of brachytherapy. This study is to localize anatomic point A (APA) of cervical cancer patients for reference of radiotherapy. We will use laparoscopic clipping technique to localize APA for cervical cancer patients during pelvic and paraaortic lymph node sampling. When these patients are receiving brachytherapy, orthogonal radiographs will be obtained after insertion of tandem and colpostats by using Henschke afterloading applicators.
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Cervical Cancer | Malignant Cervical Neoplasm | CURATED_EXACT | 0.92 |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| hemoclip | Device | — | UNRESOLVED |
Design
Arms and outcomes
Arms (0)
[]Primary outcomes (1)
- measure
- Distance difference between anatomiacal and hypothetical point A
Secondary outcomes (1)
- measure
- Difference from prescribed dose between anatomiacal and hypothetical point A
Eligibility
Eligibility (as posted)
- Sex
- Female
- Minimum age
- 30 Years
- Maximum age
- 75 Years
Show eligibility criteria text
Inclusion Criteria: * Female, * Carvical cancer proven by pathology, * Indicated for lymph node sampling Exclusion Criteria: * Patient refuse lymph node sampling, * History of allergy to metal materials
References
Publications (3)
- BACKGROUNDDatta NR. From 'points' to 'profiles' in intracavitary brachytherapy of cervical cancer. Curr Opin Obstet Gynecol. 2005 Feb;17(1):35-41. doi: 10.1097/00001703-200502000-00007. PMID 15711409
- BACKGROUNDDatta NR, Basu R, Das KJ, Rajasekar D, Pandey CM, Ayyagari S. Problems in reporting doses and volumes during multiple high-dose-rate intracavitary brachytherapy for carcinoma cervix as per ICRU Report 38: a comparative study using flexible and rigid applicators. Gynecol Oncol. 2003 Nov;91(2):285-92. doi: 10.1016/s0090-8258(03)00506-7. PMID 14599857
- DERIVEDWang KL, Yang YC, Chao KS, Wu MH, Tai HC, Chen TC, Huang MC, Chen JR, Su TH, Chen YJ. Correlation of traditional point a with anatomic location of uterine artery and ureter in cancer of the uterine cervix. Int J Radiat Oncol Biol Phys. 2007 Oct 1;69(2):498-503. doi: 10.1016/j.ijrobp.2007.03.038. PMID 17869664