Radiation therapy of external iliac lymph nodes with lateral pelvic portals: Identification of patients at risk for inadequate regional coverage

Mison Chun, Robert D. Timmerman, Rulon Mayer, Marilyn N. Ling, John Sheldon, Elliot K Fishman

Research output: Contribution to journalArticle

Abstract

PURPOSE: To determine whether 'standard' lateral pelvic radiation therapy portals provide adequate margins for treating the external iliac lymph nodes (EILNs). MATERIALS AND METHODS: With computed tomographic (CT) data and a computerized algorithm, the course of the EILN chain was reconstructed in 48 patients. The marginal distance between a consistently localized portion of the EILNs and the anterior field border that was placed at the front of the pubic symphysis was recorded for each patient. RESULTS: The EILNs were covered adequately in only 50% of both men and women. More adequate EILN margins were observed in (a) women older than 68 years, (b) women with small anteroposterior separations, (c) men older than 70 years, and (d) men and women with a low central obesity index. Less adequate margins were observed in men who were obese or men with large anteroposterior separations. In the study population, no correlation was observed for sex, race, or tumor site. CONCLUSION: The authors recommend portals that are designed specifically for patients rather than standard portals that may inadequately cover the intended targets.

Original languageEnglish (US)
Pages (from-to)147-150
Number of pages4
JournalRadiology
Volume194
Issue number1
StatePublished - Jan 1995

Fingerprint

Radiotherapy
Lymph Nodes
Pubic Symphysis
Abdominal Obesity
Population
Neoplasms

Keywords

  • Computed tomography (CT), treatment planning
  • Lymphatic system, therapeutic radiology
  • Treatment planning

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology

Cite this

Radiation therapy of external iliac lymph nodes with lateral pelvic portals : Identification of patients at risk for inadequate regional coverage. / Chun, Mison; Timmerman, Robert D.; Mayer, Rulon; Ling, Marilyn N.; Sheldon, John; Fishman, Elliot K.

In: Radiology, Vol. 194, No. 1, 01.1995, p. 147-150.

Research output: Contribution to journalArticle

Chun, Mison ; Timmerman, Robert D. ; Mayer, Rulon ; Ling, Marilyn N. ; Sheldon, John ; Fishman, Elliot K. / Radiation therapy of external iliac lymph nodes with lateral pelvic portals : Identification of patients at risk for inadequate regional coverage. In: Radiology. 1995 ; Vol. 194, No. 1. pp. 147-150.
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