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Yamazaki M, Suzuki T, Hiraga C, Yoshida Y, Baba A, Saitou H, Ogane S, Fujii T, Takano M, Katakura A, Tanaka I, Nomura T, Takano N. Effect of postoperative radiotherapy for free flap volume changing after tongue reconstruction. Oral Radiol 2021; 37:518-523. [PMID: 33184774 DOI: 10.1007/s11282-020-00489-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 10/22/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE The purpose of this study was to evaluate the effect of postoperative radiotherapy (RT) on temporal volume changes with a cutaneous free flap (CF) and a myocutaneous free flap (MCF). METHODS The subjects were 24 men and 11 women (mean age, 50.5 ± 15.5 years) with tongue or floor of mouth cancer. Twenty-seven cases of CF and eight cases of MCF were selected. The flap volume change of the reconstructed tongue was calculated using computed tomography (CT) images taken immediately and at one year postoperatively using the DICOM image processing software OsiriX®. RESULTS The reduction rate in flap volume at one year postoperatively was 82.0 ± 15% in CF without RT, 70.3 ± 26.1% in CF with RT, 88.5 ± 14.7% in MCF without RT, and 99.5 ± 16% in MCF with RT. The MCF volume was significantly higher compared to the CF volume. Although postoperative RT reduced the CF volume by 30%, there was only a slight reduction in the MCF volume. CONCLUSIONS We evaluated the effect of postoperative RT on volume reduction in 35 cases of the reconstructed tongue with CF and MCF using a computer-assisted volume rendering technique. In this study, the effect of RT on volume reduction was different between the CF and MCF.
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Affiliation(s)
- Masae Yamazaki
- Department of Oral Oncology, Oral and Maxillofacial Surgery, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
| | - Taiki Suzuki
- Department of Oral Oncology, Oral and Maxillofacial Surgery, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan.
- Oral Cancer Center, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan.
| | - Chiho Hiraga
- Department of Oral Oncology, Oral and Maxillofacial Surgery, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
| | - Yoshifumi Yoshida
- Department of Oral Medicine, Hospital Dentistry, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
| | - Akira Baba
- Department of Radiology, The Jikei University School of Medicine and University Hospital, 3-25-8, Nishi-Shimbashi, Minato-ku, Tokyo, 1058461, Japan
| | - Hirokazu Saitou
- Department of Oral Oncology, Oral and Maxillofacial Surgery, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
- Oral Cancer Center, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
| | - Satoru Ogane
- Oral Cancer Center, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
| | - Takako Fujii
- Department of Plastic Surgery, Tokyo Dental College Ichikawa General Hospital, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
| | - Masayuki Takano
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, 2-9-18, Kanda-Misakicho, Chiyoda-ku, Tokyo, 101-0061, Japan
| | - Akira Katakura
- Department of Oral Pathological Science and Surgery, Tokyo Dental College, 2-9-18, Kanda-Misakicho, Chiyoda-ku, Tokyo, 101-0061, Japan
| | - Ichiro Tanaka
- Department of Plastic Surgery, Tokyo Dental College Ichikawa General Hospital, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
| | - Takeshi Nomura
- Department of Oral Oncology, Oral and Maxillofacial Surgery, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
- Oral Cancer Center, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
| | - Nobuo Takano
- Oral Cancer Center, Tokyo Dental College, 5-11-13, Sugano, Ichikawa-shi, Chiba, 272-8513, Japan
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