Renal vein thrombosis is most commonly found in :: (A) Focal glomenilosclerosis, (B) Membranous GN, (C) Minimal change GN, (D) Acute pyelonephritis
Answer is B. Nephrotic syndrome accompanying membranous glomerulopathy and certain carcinomas are the most common cause of RVT.
Remember :

Most common cause of RVT in adult —› Nephrotic syndrome due to membranous glomerulonephritis.
Most common cause of RVT in children —› K nephrotic syndrome due to minimal change disease.
Most common cause of RVT in newborns and infants ---> Asphyxia, dehydration, shock and sepsis.