Histopathologic Consideration of Fiducial Gold Markers Inserted for Real-Time Tumor-Tracking Radiotherapy Against Lung Cancer

Mikado Imura, Koichi Yamazaki, Kanako C. Kubota, Tomoo Itoh, Rikiya Onimaru, Yasushi Cho, Yasuhiro Hida, Kichizo Kaga, Yuya Onodera, Shigeaki Ogura, Hirotoshi Dosaka-Akita, Hiroki Shirato, Masaharu Nishimura

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Purpose: Internal fiducial gold markers, safely inserted with bronchoscopy, have been used in real-time tumor-tracking radiotherapy for lung cancer. We investigated the histopathologic findings at several points after the insertion of the gold markers. Methods and Materials: Sixteen gold markers were inserted for preoperative marking in 7 patients who subsequently underwent partial resection of tumors by video-assisted thoracoscopic surgery within 7 days. Results: Fibrotic changes and hyperplasia of type 2 pneumocytes around the markers were seen 5 or 7 days after insertion, and fibrin exudation without fibrosis was detected 1 or 2 days after insertion. Conclusions: Because fibroblastic changes start approximately 5 days after gold marker insertion, real-time tumor-tracking radiotherapy should be started >5 days after gold marker insertion.

Original languageEnglish
Pages (from-to)382-384
Number of pages3
JournalInternational Journal of Radiation Oncology Biology Physics
Volume70
Issue number2
DOIs
Publication statusPublished - 01-02-2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Radiation
  • Oncology
  • Radiology Nuclear Medicine and imaging
  • Cancer Research

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