Comparison of dose delivered to vagina using two different intracavitary brachytherapy applicators for carcinoma cervix. 2022

Harjot Kaur Bajwa, and Anil Kumar Talluri, and Aijaz Maqbool, and Devender Reddy, and Rohith Singareddy, and Nvn Madhusudhana Sresty, and Alluri Krishnam Raju
Department of Radiation Oncology, Basavatarakam Indo American, Cancer Hospital and Research Institute, Hyderabad, Telangana, India.

The aim of the study was to compare the dose to vaginal points between two intracavitary applicators used for HDR brachytherapy in Carcinoma Cervix METHODS AND MATERIALS: Patients reporting to our center for Carcinoma cervix intracavitary brachytherapy were randomly allocated to treatment with either Manchester or Fletcher Suit Delclos (FSD) applicator. All patients received an EBRT dose of 50 Gy in 25 fractions along with weekly Cisplatin (40 mg/m2). Brachytherapy was administered using CT based planning. All patients received a dose of 7 Gy to Point A one week apart for a total of three fractions. For vaginal dose reporting, the PIBS points (PIBS, PIBS+1, PIBS+2, PIBS-1, PIBS-2) and dose to vagina at the level of ovoids was compared between the two applicators RESULTS: A total of 30 Carcinoma cervix patients were randomly allocated to receive intracavitary brachytherapy with either Manchester or FSD applicator. The mean vaginal reference length for patients treated with Manchester applicator was 4.3 and for patients treated with FSD applicator was 4.4. On analyzing dose to different vaginal points, patients treated with Manchester applicator received significantly higher mean and median doses to all PIBS points (except PIBS-2 cm) as compared to FSD applicator. On analyzing dose to the upper vagina at the level of the ovoids, the Manchester applicator delivered higher antero-posterior doses as compared to FSD applicator. Manchester applicator gives higher dose to the vagina as compared to FSD applicator for intracavitary brachytherapy in Carcinoma Cervix. The choice of using a particular applicator depends on the residual disease at the time of brachytherapy and patient anatomy.

UI MeSH Term Description Entries
D011879 Radiotherapy Dosage The total amount of radiation absorbed by tissues as a result of radiotherapy. Dosage, Radiotherapy,Dosages, Radiotherapy,Radiotherapy Dosages
D001918 Brachytherapy A collective term for interstitial, intracavity, and surface radiotherapy. It uses small sealed or partly-sealed sources that may be placed on or near the body surface or within a natural body cavity or implanted directly into the tissues. Curietherapy,Implant Radiotherapy,Plaque Therapy, Radioisotope,Radioisotope Brachytherapy,Radiotherapy, Interstitial,Radiotherapy, Intracavity,Radiotherapy, Surface,Brachytherapy, Radioisotope,Interstitial Radiotherapy,Intracavity Radiotherapy,Radioisotope Plaque Therapy,Radiotherapy, Implant,Surface Radiotherapy,Therapy, Radioisotope Plaque
D002277 Carcinoma A malignant neoplasm made up of epithelial cells tending to infiltrate the surrounding tissues and give rise to metastases. It is a histological type of neoplasm and not a synonym for "cancer." Carcinoma, Anaplastic,Carcinoma, Spindle-Cell,Carcinoma, Undifferentiated,Carcinomatosis,Epithelial Neoplasms, Malignant,Epithelioma,Epithelial Tumors, Malignant,Malignant Epithelial Neoplasms,Neoplasms, Malignant Epithelial,Anaplastic Carcinoma,Anaplastic Carcinomas,Carcinoma, Spindle Cell,Carcinomas,Carcinomatoses,Epithelial Neoplasm, Malignant,Epithelial Tumor, Malignant,Epitheliomas,Malignant Epithelial Neoplasm,Malignant Epithelial Tumor,Malignant Epithelial Tumors,Neoplasm, Malignant Epithelial,Spindle-Cell Carcinoma,Spindle-Cell Carcinomas,Tumor, Malignant Epithelial,Undifferentiated Carcinoma,Undifferentiated Carcinomas
D002583 Uterine Cervical Neoplasms Tumors or cancer of the UTERINE CERVIX. Cancer of Cervix,Cancer of the Cervix,Cancer of the Uterine Cervix,Cervical Cancer,Cervical Neoplasms,Cervix Cancer,Cervix Neoplasms,Neoplasms, Cervical,Neoplasms, Cervix,Uterine Cervical Cancer,Cancer, Cervical,Cancer, Cervix,Cancer, Uterine Cervical,Cervical Cancer, Uterine,Cervical Cancers,Cervical Neoplasm,Cervical Neoplasm, Uterine,Cervix Neoplasm,Neoplasm, Cervix,Neoplasm, Uterine Cervical,Uterine Cervical Cancers,Uterine Cervical Neoplasm
D002584 Cervix Uteri The neck portion of the UTERUS between the lower isthmus and the VAGINA forming the cervical canal. Cervical Canal of the Uterus,Cervical Canal, Uterine,Ectocervix,Endocervical Canal,Endocervix,External Os Cervix,External Os of the Cervix,Uterine Cervical Canal,Cervix,Cervixes,Uterine Cervix,Canal, Endocervical,Canal, Uterine Cervical,Cervix, External Os,Cervix, Uterine,Endocervical Canals,Uterine Cervical Canals
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014621 Vagina The genital canal in the female, extending from the UTERUS to the VULVA. (Stedman, 25th ed) Vaginas

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