Congenital intrathoracic bronchopulmonary foregut malformations in childhood.

Bronchopulmonary foregut malformations (BPFM) are a group of related disorders. They include tracheoesophageal fistula with or without atresia, bronchopulmonary sequestration, intestinal duplication cyst, bronchogenic cyst, aberrant systemic arterial supply to the lung, and bronchial mucosal rests in the esophagus. This paper describes 12 cases which illustrate the spectrum of clinical and radiographic features of these anomalies.

Intrathoracic rib: radiographic features of two cases.

Two cases of intrathoracic rib are presented. In one of these the anomalous rib was not supernumerary, and the investing layers of pleura caused the rib to appear abnormally dense. The relevant literature is briefly reviewed.

Arthritis of primary biliary cirrhosis.

We describe the clinical and roentgenographic findings in the hands of 13 patients with primary biliary cirrhosis. A nondeforming, generally asymptomatic erosive arthritis was present in 12 of 13 patients. The erosions were asymmetrically distributed and mainly involved the distal small joints of the hands.

The Stroop phenomenon: perceptual conflict or response competition?

The Stroop phenomenon has recently been explained by two contrasting approaches, the perceptual conflict and the response competition. This experiment was designed to evaluate the two different explanations. 24 undergraduates were tested on the three sets of Stroop stimuli while hearing their verbal responses under delayed auditory feedback and under normal feedback.

Deposition of circulating antigen--antibody complexes in the gastrointestinal tract of rabbits with chronic serum sickness.

The possible role of circulating immune complexes (IC) in the production gastrointestinal lesions was studied in rabbits with chronic serum sickness (CSS) induced by multiple daily injections of bovine serum albumin (BSA). All rabbits generating a marked antibody response developed IC glomerulonephritis. In approximately 50% of these rabbits granular deposits of BSA, rabbit IgG, and C3 were also found in the gastrointestinal tract.

The arthritis of mixed connective tissue disease.

Twenty patients with mixed connective tissue disease were followed for 5 years. Arthritis occurred in all 20 patients, being the presenting complaint in 11 patients. The joints most frequently involved were the proximal interphalangeal (PIP), metacarpophalangeal (MCP), wrists, metatarsophalangeal (MTP), and knee; the distribution tended to be symmetrical, mimicking early rheumatoid arthritis.

Hand changes in primary biliary cirrhosis.

The radiographic findings in the hands of 13 patients with primary biliary cirrhosis are described. Erosive arthritis was present in 12 of the 13 cases. Seven patients hand osteopenia due to hepatic osteodystrophy.

Multicentric tracheobronchial and oesophageal granular cell myoblastoma.

Two patients with multiple intrathorcic granular cell myoblastomas are described. In one case multiple tumours were present in the major airways and oesophagus. The patient presented with recurrent pulmonary infections and stridor due to airway obstruction.

Pneumatosis coli in non-Hodgkins lymphoma.

Two patients with poorly differentiated lymphoma who developed pneumatosis coli are described. In one case, the intramural gas was associated with diffuse nodular submucosal deposits of tumour. An annular stricture due to lymphoma was the underlying aetiology of the pneumatosis coli in the second case.

Lymphoma of the colon: the spectrum of radiologic changes.

Primary lymphoma of the colon is rare and comprises less than 1% of large bowel malignancies. Secondary colonic involvement in patients with advanced lymphoma is not uncommon and is frequently undetected. The radiographic findings of 34 patients with colonic lymphoma were reviewed.

The morphologic basis of proteinuria in experimental chronic serum sickness glomerulonephritis. A light and electron microscopic study using horseradish peroxidase and ferritin as tracers.

The morphologic basis of proteinuria in experimental chronic serum sickness glomerulonephritis in rabbits was studied by light and electron microscopy using horseradish peroxidase (effective radius 30 A; mol. wt. 40,000) and ferritin (effective radius 60 A; mol.

Pneumatosis cystoides intestinalis and obstructing intussusception in celiac disease.

Spontaneous penumoperitoneum and pneumatosis cystoides intestinalis have been undescribed complications of celiac disease. In the case reported, small bowel gas cysts caused an obstructing intussusception. The etiology of the pneumatosis cystoides intestinalis is discussed.

Mixed connective tissue disease--clinical and radiological aspects of 20 cases.

The clinical and radiological features of 20 cases of mixed connective tissue disease (MCTD), a newly defined disorder, are described. MCTD shares a number of abnormalities with other collagen diseases, notably diffuse systemic sclerosis and systemic lupus erythematosus. However, patients with MCTD have a specific circulating antibody to extractable nuclear antigen (ENA).

Cranio-carpo-tarsal dysplasia. A report of seven cases.

Clinical and radiographic features of seven cases of cranio-carpo-tarsal dysplasia are presented. Radiographs show bilateral dislocation of the hips, bilateral vertical talus deformity hand deformities, and characteristic skull changes.

Unusual gastrointestinal features in a child with pernicious anemia.

Pernicious anemia in childhood is a rare disease. The radiologic demonstration of gastric mucosal atrophy led directly to this diagnosis in an 11-year-old girl. In addition, there was deformity of the pyloric antrum and superficial ulceration in the stomach and duodenum.

The plain abdominal radiograph in pneumatosis coli.

The clinical features and plain film findings in 14 patients with pneumatosis coli are described. Nine had oxygen treatment. The plain radiographic appearances are analysed and their value in diagnosis is presented.

Study of the microbiological environment within long- and medium-range Canadian Forces aircraft.

Because of a possible requirement to carry patients with highly virulent communicable diseases, a study was undertaken to observe smoke patterns within Canadian Forces transport aircraft. This was followed by the quantitative evaluation of the spread on non-pathogenic organisms disseminated within a Boeing 707 and a C13OE (Hercules). Thirdly, an attempt to recover respiratory tract viruses during transatlantic flights was made.