Posibleng Mga Sanhi para sa Flank Pain Urinary Tract Infection Strain ng Kalamnan Pelvic Inflammatory Disease Pseudomonas Aeruginosa Infectious Mononucleosis Renal Colic Nephrolithiasis Diverticulosis Inguinal Hernia Pyelonephritis Malalang Pyelonephritis Apendisitis Uterine Fibroid Ureterolithiasis Renal Pelvic Calculus Malalang Interstitial Nephritis Namamanang Renal Cell Carcinoma Arterial Embolism Hydronephrosis Chronic na Pyelonephritis Renal Cell Carcinoma Leiomyosarcoma Angiomyolipoma Lymphangioleiomyomatosis Anaphylaxis Ankylosing Spondylitis Tuberkulosis (TB) Paroxysmal Nocturnal Hemoglobinuria Gaucher Disease Autosomal Dominant Polycystic Kidney Disease