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Two cases of aorto-bisiliac aneurysms in monocorial twins in their sixties were observed. We report experimental and clinical data from the literature about genetic involvement in the formation of aneurysms, especially when associated with other risk factors. In addition to the genetic factors in the twins we studied, we also found other risk factors, such as hypertension and smoking, which took a long time to affect the patients before the aneurysms were detected.

The Authors tested a standard exercise suggested by Laing in 1980 for the screening and the follow-up of patients with atherosclerotic lesions of the arteries of the lower limbs. Were included in this study 44 patients with monolateral symptoms and was studied the asymptomatic limb. The results were compared with the ones obtained by the traditional exercise proposed by Strandness and with the ones of a control group studied with the two tests. The excellent correlation of the data gives us the opportunity to reaffirm the utility of the Laing's standard exercise in the clinical investigation of potentially arteriopathic patients.

On the basis of a recent case of fundic gastric heterotopia in the gallbladder, the principal, possible embryogenetic hypotheses of the malformation are described and discussed. The possibility that acid secretion of the gastric glands contained in the ectopic fundic mucosa determined part of the symptomatological and clinical picture accompanying signs of lithiasic cholecystopathy is also evaluated.