[Membranous nephropathy - the most commonly diagnosed glomerulopathy in patients who underwent renal biopsy in the Department of Internal Medicine, Nephrology and Endocrinology St. Queen Jadwiga Clinical District Hospital No. 2 in Rzeszow].

We retrospectively analysed the results of 120 renal biopsy, performed in 52 women, 62 men and 6 children hospitalized mainly in the Department of Internal Medicine, Nephrology and Endocrinology St. Queen Jadwiga Clinical District Hospital No. 2 in Rzeszów from 2013 to 2016. The average age of patients on whom renal biopsy was performed amounts to 44 (7-78) years. The most common indications for renal biopsy were nephrotic syndrome in 47 patients (37.3%), non-nephrotic proteinuria in 31 patients (24.6%), worsening renal function in 22 patients (17.5%), coexistence proteinuria with hematuria in 16 patients (12.7%), nephritic syndrome in 9 patients (7.1%) as well as an isolated hematuria in 1 patient (0.8%). Membranous glomerulonephritis was the most common histological diagnosis observed in biopsies, and was diagnosed in 19 patients (15.1%). In 14 patients we diagnosed lupus nephritis (11.1%). With the same frequency we diagnosed focal glomerulosclerosis, and mesangioproliferative glomerulonephritis (11 patients, 8,7%). Membraneproliferative glomerulonephritis was diagnosed in 10 patients (7.9%). Other nephropathy accounted for less than 8% of all diagnoses. Most patients with membranous nephropathy (8 patients, 61%) had antibodies against phospholipase A2 receptor. All patients with a diagnosis of membranous nephropathy received the renin- angiotensin-aldosterone system blockade, and 13 patients (68.4%) received immunosuppressive therapy. Complete remission was achieved in 11 patients (64.7%) with primary membranous nephropathy. In 35 patients (27.8%) of all patients who underwent renal biopsy they had complications after procedure in the form of small and clinically insignificant perirenal hematomas. Hematuria was observed in 7 cases (5.56%). In one case, due to retroperitoneal bleeding, the patient required a transfusion of blood products.