This report describes nine unrelated cats with acute idiopathic polyneuropathy. All cats presented with acutely developing tetraparesis or tetraparalysis and loss of spinal reflexes. Seven cats recovered completely within 4 to 6 weeks, without any medication. Two years after complete recovery, none of these cats had had a relapse. In the acute stage, two cats were euthanized because of respiratory complications. Postmortem examination was performed on one of these cats and revealed generalized peripheral motor polyneuropathy. The clinical signs in these cats were identical to those of the Guillain-Barré syndrome in humans.

The results of clinical and radiographic examinations of 15 dogs with confirmed malignant histiocytosis (MH) were reviewed. The most common clinical signs were anorexia (14 dogs), weight loss (13 dogs), lethargy (13 dogs), anaemia (11 dogs), and dyspnoea and/or coughing (8 dogs). Radiographs revealed abnormalities in all dogs, either intrathoracic (pulmonary nodules or consolidation [7 dogs], mediastinal masses [10 dogs], and incidentally pleural effusion [3 dogs]) or abdominal (hepatomegaly [6 dogs] and splenomegaly [2 dogs]), or both. MH occurs relatively frequently in Bernese Mountain dogs. Both clinical and radiographic signs are non-specific, but when they are present in a middle-aged Bernese Mountain dog, MH should be included in the differential diagnosis.

SUMMARY. An ulcerated lesion resembling a tumour in the lesser curvature of the stomach of a 3-year-old male Dobermann pinscher was found to be caused by Cryptococcus neoformans. The dog had been vomiting for two months and had slight leucocytosis and anaemia. Biopsies of the ulcerated lesion revealed granulomatous inflammation and many cryptococci, which were particularly prominent in PAS and mucicarmine stained sections. No other lesions were found at necropsy.

THE INTAKE OF POLYUNSATURATED FATTY ACIDS BY CATS IS REFLECTED IN THEIR ADIPOSE TISSUEM. H. F., van Niell *, and A.C. Beynen2 SUMMARY To find out whether the composition of the subcutaneous adipose tissue of cats reflects the intake of polyunsaturated fatty acids, we performed a feeding trial. Six groups of kittens were fed on diets with variable combinations of

Summary We present a case of a young dog exhibiting internal hydrocephalus, associated with parasitic granulomas within the ventricular system, inflammatory changes in the periventricular brain tissue and stenosis of the mesencephalic aqueduct. Reference is made to possible causes of these lesions in animals and man.