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Case Report

Isolated Peritoneal Metastasis of Prostate Cancer Presenting with Massive Ascites: A Case Report

1
Department of Internal Medicine, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon-si 24289, Gangwon-do, Korea
2
Department of Pathology, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon-si 24289, Gangwon-do, Korea
*
Author to whom correspondence should be addressed.
Curr. Oncol. 2022, 29(7), 4423-4427; https://doi.org/10.3390/curroncol29070351
Received: 30 May 2022 / Revised: 18 June 2022 / Accepted: 19 June 2022 / Published: 21 June 2022
(This article belongs to the Topic Prostate Cancer: Symptoms, Diagnosis & Treatment)
The peritoneal carcinomatosis of prostate cancer without bone or other visceral organ involvement is extremely rare. We report a case of an isolated peritoneal metastasis of prostate cancer in a patient without other metastatic sites and a history of prostate surgery. A 63-year-old male with locally advanced prostate cancer without known distant metastasis on androgen deprivation therapy presented with abdominal distension that had persisted for a month. Abdominopelvic computed tomography (CT) showed gastric wall thickening and a moderate amount of ascites. The gastroscopy showed hyperemic mucosal patches on the antrum body. A cytological examination of the ascites fluid was negative for malignant cells. Diagnostic laparoscopy showed multiple nodules in the peritoneum. A biopsy was performed. Histological findings were compatible with metastatic carcinoma of the prostate, which was immunohistochemically positive for pan-cytokeratin, the androgen receptor, and prostate-specific antigen (PSA). The patient was then treated with abiraterone acetate. After 1 month of treatment, both ascites and the PSA value decreased. We describe an extremely rare case of isolated peritoneal carcinomatosis from prostate cancer without any organ metastasis or history of surgery. Clinicians should be aware of these very rare metastases of prostate cancer. Hormonal therapy may be helpful for such cases. View Full-Text
Keywords: prostate cancer; peritoneal carcinomatosis; abiraterone acetate prostate cancer; peritoneal carcinomatosis; abiraterone acetate
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MDPI and ACS Style

Jang, H.R.; Lee, K.; Lim, K.-H. Isolated Peritoneal Metastasis of Prostate Cancer Presenting with Massive Ascites: A Case Report. Curr. Oncol. 2022, 29, 4423-4427. https://doi.org/10.3390/curroncol29070351

AMA Style

Jang HR, Lee K, Lim K-H. Isolated Peritoneal Metastasis of Prostate Cancer Presenting with Massive Ascites: A Case Report. Current Oncology. 2022; 29(7):4423-4427. https://doi.org/10.3390/curroncol29070351

Chicago/Turabian Style

Jang, Hee R., Kyoungyul Lee, and Kyu-Hyoung Lim. 2022. "Isolated Peritoneal Metastasis of Prostate Cancer Presenting with Massive Ascites: A Case Report" Current Oncology 29, no. 7: 4423-4427. https://doi.org/10.3390/curroncol29070351

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