Errol R Walrond

Radiological and pathological observations in a series of seventeen cases of hypertrophic pyloric stenosis of adults

Abstract A study of the radiological appearances and pathological features of a series of 17 cases of hypertrophic pyloric stenosis of the adult revealed several interesting features. It was shown that the generally accepted radiological description of smooth, severe and regular narrowing and elongation of the pyloric canal is only present in a proportion of cases. The radiological picture is very variable and many cases presented with an irregular pyloric canal and antrum with only moderate degree of narrowing or as pyloric stenosis. The classical pathological changes are said to be those of hypertrophy and hyperplasia of the circular muscle of the pyloric canal and adjacent part of the antrum. The use of special staining techniques revealed varying amounts of fibrous tissue in the hypertrophied smooth muscle in every case, a feature only briefly referred to in one or two previous communications. The presence of fibrous tissue is compatible with the theory that hypertrophic pyloric stenosis of the adult ...

Lung abscess: a complication of malposition of a central venous catheter

The monitoring of central venous pressure by means of a polyethylene catheter inserted percutaneously into the superior vena cava or right atrium is a well established and valuable adjunct to the management of very ill patients. These catheters are also employed during hyperalimentation therapy for the infusion of intravenous fluids, particularly hypertonic solutions which tend to produce thrombosis if infused into smaller peripheral veins. There have been several reports concerning the complications of the use of such catheters (Langston,1971; Smith et al, 1965; Walters, Stanger and Rotem, 1972; Flanagan et al., 1969; Henzel and De-Weese, 1971; Swaroop, 1972). This paper records a case of pulmonary abscess formation due to unrecognized faulty positioning of a central venous catheter which had passed through the heart and entered a branch of the right pulmonary artery.