Case Report
Copyright ©The Author(s) 2023. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Sep 6, 2023; 11(25): 5994-5999
Published online Sep 6, 2023. doi: 10.12998/wjcc.v11.i25.5994
Single omental metastasis of renal cell carcinoma after radical nephrectomy: A case report
Jae-Wook Chung, Jun-Koo Kang, Eun Hye Lee, So Young Chun, Yun-Sok Ha, Jun Nyung Lee, Tae-Hwan Kim, Tae Gyun Kwon, Ghil Suk Yoon
Jae-Wook Chung, Jun-Koo Kang, Yun-Sok Ha, Jun Nyung Lee, Tae-Hwan Kim, Tae Gyun Kwon, Department of Urology, Kyungpook National University Hospital, Daegu 41404, South Korea
Jae-Wook Chung, Yun-Sok Ha, Jun Nyung Lee, Tae-Hwan Kim, Tae Gyun Kwon, Department of Urology, School of Medicine, Kyungpook National University, Daegu 41404, South Korea
Jae-Wook Chung, Eun Hye Lee, So Young Chun, Yun-Sok Ha, Jun Nyung Lee, Tae-Hwan Kim, Tae Gyun Kwon, Biomedical Research Institute, Kyungpook National University, Daegu 41404, South Korea
Jae-Wook Chung, Yun-Sok Ha, Jun Nyung Lee, Tae-Hwan Kim, Tae Gyun Kwon, Joint Institute for Regenerative Medicine, Kyungpook National University, Daegu 41404, South Korea
Ghil Suk Yoon, Department of Pathology, Kyungpook National University Hospital, Daegu 41404, South Korea
Ghil Suk Yoon, Department of Pathology, School of Medicine, Kyungpook National University, Daegu 41404, South Korea
Author contributions: Chung JW, Kang JK, Kwon TG, and Yoon GS contributed to manuscript writing and editing and data collection; Lee EH, Chun SY, Ha YS, Lee JN, and Kim TH contributed to data analysis; Kwon TG and Yoon GS contributed to conceptualization and supervision; all authors have read and approved the final manuscript.
Informed consent statement: The present study was approved by the Ethics Committee (IRB Number: KNUCH 2023-03-009) and performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. The need for informed consent was waived by the aforementioned IRB due to the retrospective nature and single case report of the study.
Conflict-of-interest statement: All the authors declare that they have no conflict of interest to disclose.
CARE Checklist (2016) statement: The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Ghil Suk Yoon, MD, PhD, Professor, Department of Pathology, Kyungpook National University Hospital, Hakjeong-ro 561, Buk-gu, Daegu 41404, South Korea. gsyoon@knu.ac.kr
Received: May 31, 2023
Peer-review started: May 31, 2023
First decision: July 19, 2023
Revised: July 28, 2023
Accepted: August 8, 2023
Article in press: August 8, 2023
Published online: September 6, 2023
Processing time: 93 Days and 1.6 Hours
Abstract
BACKGROUND

Renal cell carcinoma (RCC) is the third most common malignancy in the genitourinary tract. The lungs, bone, lymph nodes, liver, and brain are common metastatic sites of RCC. However, there is limited literature on single omental metastasis of RCC.

CASE SUMMARY

We present the case of a 44-year-old man with single omental metastasis of RCC after laparoscopic radical nephrectomy. Pathological diagnosis of the resected left kidney revealed pT3a clear cell RCC (Fuhrman grade III). At 6 mo postoperatively, abdominal computed tomography revealed a 12-mm enhancing nodule in the left lower peritoneum. At 7 mo after initial operation, laparoscopic removal of the left omental nodule was performed. The pathological results indicated metastatic clear cell RCC. Currently, the patient is being treated with adjuvant pembrolizumab.

CONCLUSION

Omental metastasis of RCC owing to laparoscopic radical nephrectomy is rare. Urologists should be aware of the diverse nature of RCC.

Keywords: Metastasis; Omentum; Renal cell carcinoma; Radical nephrectomy; Case report

Core Tip: The authors present the case of a 44-year-old man with single omental metastasis of renal cell carcinoma (RCC) after laparoscopic radical nephrectomy. Omental metastasis of RCC owing to laparoscopic radical nephrectomy is rare. Urologists should be aware of the diverse nature of RCC.