<prompt> All are true associations of ulcerative colitis except ?Eythema nodosumCircinate balanitisSclerosing cholangitisAphthous stomatitis  <response>: Answer is b i.e. Circinate balanitis Cricinate balanitis is characterised by - serpiginous, annular lesions with slightly raised borders on the glans penis of an uncircumcised man. - in circumcised men papulosquamous plaques and papules occur on the penis. Extraintestinal manifestation of IBD A Dermatologic - explained in previous question B Rheumatologic i Peripheral ahritis - more common in CD ii Ankylosing spondylitis - more common in CD iii Sacroilitis - symmetrical iv Hyperophic osteoahropathy v Pelvicfemoral osteomyelitis vi Relapsing polychondritis C Ocular i Conjunctivitis ii Anterior uveitisiritis iii Episcleritis D Hepatobiliary i Hepatic steatosis fatty liver ii Cholelithiasis - more common in CD than UC and occurs in 10 to 35 of patients with ileitis or ileal resection. - Gall stone formation occurs because of malabsorption of bile acids. - ill Primary sclerosing cholangitis - 1 to 5 of patients with IBD have PSC, but 50 to 75 of patients with PSC have IBD. E Urologic i Calculi - more common in Crohns disease. Calcium oxalate stones are seen due to hyperoxaluria which occurs because of increased absorption of dietary oxalates in colon. In patients with ileal dysfunction, fatty acids are unabsorbed and they chelate calcium leaving oxalate unbound. ii Ureteral obstruction iii Fistulas F Others i Thromboembolic disease ii A spectrum of vasculitidies iii Osteoporosis osteomalacia iv- Cardiopulmonary manifestation - endocarditis, myocarditis, pleuropericarditis, ILD v Amyloidosis 