Evaluation of the Rectal V30 Parameter in Patients Diagnosed with Postoperative Endometrial Cancer

Overview

Journal Rep Pract Oncol Radiother

Specialty Oncology

Date 2022 Jan 7

PMID 34992861

Authors

Magdalena Lukowiak

Grzegorz Galant

Karolina Jezierska

Michal Falco

Piotr Wozniak

Wojciech Podraza

Janusz P Kowalski-Stankiewicz

Affiliations

Soon will be listed here.

Abstract

Background: The present paper reports on analysis of 184 patients who were diagnosed with endometrial cancer. The main objective of this study was to address parameter V which determines a volume of the rectum irradiated with a dose of 30 Gy during radiotherapy.

Materials And Methods: All patients were irradiated with an IMRT technique on linear accelerators. The planning target volume (PTV) contour was determined by a radiation oncologist. The clinical target volume (CTV) was drawn on CT images obtained in a prone position. For statistical analysis, appropriate tests (e.g. the Shapiro-Wilk, Wilcoxon) were used.

Results And Discussion: The performed analysis showed that the recommended condition for V is met only in 3% of patients and the observed median value exceeds 90%. The obtained results were compared with the studies in which the V values were related to various radiotherapy techniques.

Conclusions: The analysis showed that the condition for V is satisfied in the case of only 3% of patients. Due to the difficulty with meeting the condition, it should be reconsidered based on real results.

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