Is Pulmonary Function Test Insensitive to Possible Pulmonary Complications after Tangential Radiotherapy of Breast Cancer?

Alireza  Khoshbin khoshnazar; A  Banikarimi; A  Hatami; MT  Badeleh

International Journal of Cancer Management

The Official Journal of Cancer Research Center (CRC), Shahid Beheshti University of Medical Sciences

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Abstract
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Is Pulmonary Function Test Insensitive to Possible Pulmonary Complications after Tangential Radiotherapy of Breast Cancer?

Author(s):

Alireza Khoshbin khoshnazar^1,*,

A Banikarimi²,

A Hatami³,

MT Badeleh⁴

1Department of Medical Physics and Biochemistry, Faculty of Medicine, Golestan University of Medical sciences, Iran

2Internal Medicine Department, 5th Azar Hospital, Golestan University of Medical sciences, Iran

3Radiotherapy Department, 5th Azar Hospital, Golestan University of Medical sciences, Iran

4Anaesthesia Department, Faculty of Paramedicine, Golestan University of Medical sciences, Iran

International Journal of Cancer Management:Vol. 3, issue 1; e80657

Published online:Mar 31, 2010

Article type:Research Article

Received:Oct 23, 2009

Accepted:Jan 01, 2010

How to Cite:Khoshbin khoshnazar A, Banikarimi A, Hatami A, Badeleh M. Is Pulmonary Function Test Insensitive to Possible Pulmonary Complications after Tangential Radiotherapy of Breast Cancer?.Int J Cancer Manag.2010;3(1):e80657.

Abstract

Background: Pulmonary complications of radiation to breast are inevitable, while its incidence and severity are not clear. One of the methods to assess pulmonary complications is spirometry. The influence of radiotherapy on pulmonary function test and the factors affecting it have been assessed in this study.

Methods: Breast cancer patients with stage II and III (based on TNM staging), underwent six courses of chemotherapy, and the total mastectomy was included in this study. Smokers, chronic pulmonary patients, cardiac patients, and those who suffered from anatomic chest malformations were excluded. Sample size was 75 and data collection was conducted by the spirometer device. The total tumor dose varied between 4800 to 5040 cGy with fraction of 180 or 200 cGy. Spirometry was performed before and 3 months after radiotherapy; the patients were examined at the same time by a specialist for respiratory complications. The measured parameters were FEV 1(Forced Expiratory Volume in 1 second) and FVC (Forced Vital capacity) which were normalized by age and sex.

Results: The average age of the patients was 45.6±7.92 .Average length and widths of tangential fields were determined 18.2±1.8 and 6.7±1.37 respectively. Average central lung distance was measured 2 ±1.07 cm. The mean of FEV1% prior to and following radiotherapy was measured 74.9 ±15.59 and 78.86±12.55 respectively (p=0.09).The mean of FVC% before and after radiation treatment was measured 72.17±14.26 and 74.6±11.36 (p=0.07). No abnormal signs were observed in the patients after radiotherapy.

Conclusion: It seems that three months is a short period for appearance of pulmonary changes after radiotherapy with cobalt machine. Moreover, minimizing CLD through planning might lower the probability of pneumonitis due to radiation.

Keywords

Tangential Radiotherapy

Breast Cancer

Spirometry

Pulmonary Complications

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Author(s):

Alireza Khoshbin khoshnazar:[PubMed][Scholar]
A Banikarimi:[PubMed][Scholar]
A Hatami:[PubMed][Scholar]
MT Badeleh:[PubMed][Scholar]