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Biomedical subjects

A C Johnson

Publications and source records attributed to A C Johnson.

At least 109 records · Page 6Linked to original sources
PubMed1980

Occurrence of oesophageal intramural pseudodiverticulosis in patients with pre-existing benign oesophageal stricture.

Five patients with benign oesophageal stricture are described who subsequently developed oesophageal intramural pseudodiverticulosis. Stricture was due to reflux oesophagitis in three patients and to lye ingestion in two. The minimum time between diagnosis of stricture and recognition of pseudodiverticulosis was two years. Most authors regard chronic inflammation as the initiating cause of pseudodiverticulosis. Although stricture is common, it generally occurs as part of the disease process and has not been regarded as a cause of the disorder. In our patients it is suggested that chronic inflammation due to stasis above a stricture, was the cause of pseudodiverticulosis. Out of the 36 cases of oesophageal intramural pseudodiverticulosis already reported, we could find only one patient in whom this sequence of events occurred.

Adolescent↗
PubMed1980

Nondestructive recovery and examination of bullet fragments from brain tissue.

A technique providing both analytical and toolmark results for lead fragments from bullets is discussed. It permits the nondestructive recovery of bullet fragments from soft cadaver tissue and was used with a plasma asher in an actual homicide case. The lead fragments are examined by neutron activation analysis (but other analytical techniques can be used) for their antimony and arsenic content and by microscopy for matching toolmarks.

Antimony↗
PubMed1978

Lower limb angiography in leprosy.

Bilateral lower limb angiography was performed on 58 patients with leprosy and compared with bilateral lower limb angiography performed on 63 non-leprosy patients. The vessels in leprosy were narrow and constricted. Decreased blood flow through arteries in the distal third of the lower limb was present. Abnormal AV fistula formation in the thigh and calf muscles and in trophic ulcers of the feet was also seen. Deep inflammatory granulomatous reaction surrounding the arteries as a result of leprosy is a possible explanation for these angiographic findings and is felt to be related to trophic ulceration. These findings were specific for leprosy, precede clinical manifestations, and are helpful in management.

Adult↗
PubMed1977

Dissecting aneurysm of intracranial arteries.

The authors present a case of the sudden onset of hemiplegia in an eight-year-old boy secondary to a dissecting aneurysm of the right internal carotid artery and middle cerebral artery.

Aortic Dissection↗