Massive lower gastrointestinal haemorrhage, successfully treated with corticosteroids, as main symptom of Schönlein-Henoch purpura. - Alvarez-Caro F; Concha-Torre JA; García-Hernández I; Menéndez-Cuervo S; Los Arcos-Solas M; Santos-Juanes J; Ramos-Polo E (Rheumatology international, 2009)