Massive Ascites of Unknown Origin: A Case Report.

Ascites is the excessive accumulation of fluid in the peritoneal cavity and predominantly caused by liver cirrhosis, cancers, or heart failure. In this study, a 31-year-old woman with chronic renal failure of unknown etiology treated with hemodialysis and peritoneal dialysis was often hospitalized because of ascites, which appeared 4 years after the second kidney transplantation. The patient was regularly (every 2-3 weeks) treated with paracentesis. Peritoneal fluid tested negative for bacterial (including atypical) and fungal infections and tuberculosis. Doppler ultrasound and liver FibroScan did not show any irregularities. Computed tomography (CT) revealed an enlarged left ovary. A high level of CA 125 was found. The second diagnostic laparoscopy revealed no changes in the ovaries, and there were no tumor cells. Diagnostics were extended, but no deviations were revealed. Suspecting drug etiology, mycophenolic acid was discontinued, bringing no improvement. Diagnostic tests caused suspicion of Meigs' syndrome; therefore, oophorectomy of left ovary was conducted, revealing numerous small cysts filled with serous fluid, without tumor cells in the ovary or peritoneal fluid. Despite the procedure performed, ascites was recurrent. Five month later, ascites spontaneously stopped growing. Paracentesis to decompress ascites was no longer required. There were 9 paracenteses performed from oophorectomy (the latest on May 23, 2019). The need for repetitive paracentesis, significantly reducing the patient's quality of life, required diagnosis for casuistic diseases. The described case is atypical because of the confusing etiology of ascites and its spontaneous cessation. Despite numerous examinations and recession of ascites, the cause of the problem is not entirely clear.

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