Three cases of intramural haematoma of the small colon of horses are presented. In all cases the haematoma obstructed the lumen and caused an accumulation of faeces and gas. The horses were in shock and had acute abdominal pain. Exploratory abdominal surgery revealed the haematomas and showed them to be associated with chronic infection and terminal rupture in one animal which was subsequently killed, and an iatrogenic perforation of the terminal small colon in another which survived after intestinal resection. In the remaining horse, which died without recovering after intestinal resection, no cause was found.

Facial flushing, hypotension, and abdominal pain after FFP administration in a patient on ACE inhibitor medication appeared to be associated with a specific type of WBC-reduction filter. This association and other reported studies suggest that special caution is warranted when patients who are treated with ACE inhibitors receive blood components administered through WBC-reduction filters capable of generating bradykinin.

Summary A report of 13 unselected clinical cases of colic in horses which were submitted to laparotomy is presented, together with one case of experimental end‐to‐side anastomosis of the ileum into the caecum. Cases are divided into acute or peracute with diverse aetiology, and subacute or chronic where all the lesions involved the small intestine. The technique of anaesthesia and surgical procedures is described and emphasis is placed on the necessity of adequate fluid therapy in such cases.

SUMMARY Six horses, which had a foreign body obstruction of the small colon showed abdominal pain of progressing severity and intestinal tympany. On rectal examination the caecum and large colon were distended with ingesta and gas but the obstructing mass could be palpated in only 3 cases. All horses had elevated indirect blood pressure and in 3 there was also fluid distension of the stomach. Only one horse had known access to foreign material in the diet, but a further 3 were related to an exceptionally dry climate period. Five of the 6 horses recovered following surgery. RÉSUMÉ Six chevaux souffraient d'une obstruction du colon flottant avec douleur abdominale progressive et tympanisme intestinal. A l'examen rectal le coecum et le colon replié parurent distendus par les ingesta et les gaz. L'obstruction ne put être indentifiée que sur trois individus. Tous les chevaux avaient une pression sanguine élevée, trois d'entre eux souffraient de distension stomacale par les fluides sans distension de l'intestin grèle. La possibilité d'avoiringéré un corps étranger ne fut reconnue que chez un animal, tandis qu'on soupĉonna les conséquences d'une saison exceptionnellement sèche dans trois autres cas. Cinq des six chevaux guérirent à la suite d'une intervention chirurgicale. ZUSAMMENFASSUNG Sechs Pferde mit einer Fremdkörper‐Obstruktion des kleinen Kolons zeigten Bauchschmerzen von zunehmender Intensität und intestinalen Meteorismus. Die rektale Untersuchung ergab eine Ueberdehnung von Zaekum und grossem Kolon durch Ingesta und Gas, aber das Passagehindernis konnte nur bei 3 Pferden gefühlt werden. Alle Tiere wiesen einen erhöhten Blutdruck auf und 3 Tiere auch eine Magenerweiterung durch Flüssigkeit; dagegen erwies sich der Dünndarm als normal. Nur ein Pferd hatte Zugang zu Fremdkörpermaterial in der Diät, bei 3 Tieren schien der Zustand zusammenzuhängen mit einer Periode ausserordentlicher Trockenheit. Fünf der sechs Pferde erholten sich nach einem chirurgischen Eingriff.

A case of urinary incontinence in a young Appaloosa colt is described. The incontinence was associated with bilateral ureteral ectopia. A definitive diagnosis was made radiographically, and surgery to relocate the ureters into the bladder was performed. Resolution of the incontinence was immediate and lasting. 'Present address: