Department of Gastroenterology and Rheumatology;
Division of Medicine;
Fukushima Medical University School of Medicine;
Department of Gastroenterology;
Fukushima Medical University Aizu Medical Center;
Department of Gastroenterology;
Hepatology and Nutrition;
the University of Texas MD Anderson Cancer Center;
Department of Endoscopy;
Fukushima Medical University Hospital;
Department of Pathology;
Fukushima Medical University Hospital;
Ascetic; fluid; Malignancy; Endoscopic; ultrasound; Paracentesis; Fine; needle; aspiration;