Biomedical subjects

R Moncada

Publications and source records attributed to R Moncada.

At least 73 records · Page 4Linked to original sources

PubMed1978

Mediastinitis from odontogenic and deep cervical infection. Anatomic pathways of propagation.

Potentially lethal consequences can quickly occur once the mediastinum is subjected to the ravages of an anaerobic infection. Mediastinitis from odontogenic or deep cervical infections is extremely rare in the era of antibiotic drugs. We have recently encountered five such cases, with a rapid spread of the inflammatory process into the mediastinum resulting in a number of local and systemic complications. All were caused by anaerobic bacteria. Awareness of such complications and early roentgenographic diagnosis lead to prompt surgical drainage, proper antibiotic therapy, and survival after a stormy clinical course. The anatomic pathways between the various fascial planes of the neck and mediastinum will be described.

Adolescent↗

PubMed1977

Radiology of invasive amebiasis of the colon.

Entamoeba histolytica is a protozoan that is endemic in various parts of the world, including some areas of the United States. It may live in the large bowel in its cyst form without harming the host (commensalism) or, for as yet poorly understood reasons, invade the tissues as a trophozoite producing invasive amebiasis of the colon. In a review of over 3,000 cases of invasive amebiasis, the clinico-pathologic forms of the disease were: ulcerative rectocolitis (95%), typhloappendicitis (3%), ameboma (1.5%), and fulminating colitis and toxic megacolon (0.5%). Different radiographic patterns are seen in each clinical form with varying degrees of specificity. It is vitally important that this disease be included in the differential diagnosis of large bowel pathology even in nonendemic areas. Several referral patients who have received inappropriate therapy for inflammatory bowel disease with near disastrous results are seen at one of our institutions (Loyola) each year.

Colitis↗

PubMed1977

Acute cholecystitis: 137 patients studied by infusion tomography of the gallbladder.

Clinical experience with inflammatory cholecystopathy recognized in 137 patients studied by infusion tomography of the gallbladder is presented. Diagnostic accuracy was 96% in positive and 94% in negative histologically proven cases. Our results show that infusion tomography of the gallbladder is an accurate, rapid, and safe diagnostic aid in the evaluation of acute cholecystitis. In cases of chronic cholecystitis, infusion tomography may be confirmatory but should not be relied on as a final diagnostic test due to a high percentage of false negative cases.

Acute Disease↗

PubMed1977

Infusion tomography of the gallbladder: mechanism of gallbladder wall opacification in experimental acute cholecystitis.

A canine model of acute cholecystitis was used to determine the mechanism of opacification of the gallbladder wall by infusion tomography. The experimental data indicate that opacification of the thickened wall of the gallbladder in acute cholecystitis is a function of hypervascularity and transport of the radiopaque material across the capillary wall by polymorphonuclear cells. Tissue-fluid equilibration of the contrast agent may also play a role.

Acute Disease↗

PubMed1977

Iatrogenic cardiovascular foreign bodies.

The incidence of iatrogenic cardiovascular foreign bodies is increasing. The most common source is a fragment of an in-dwelling venous catheter. These objects have resulted in severe sequelae and death in many instances. Most should be removed. Percutaneous extraction is the method of choice. Surgery should be reserved for cases with failed percutaneous extraction.

Adult↗

PubMed1975

The cervical aortic arch.

Cervical aortic arch anomaly is a rare congenital entity. The aortic arch extends into the soft tissues of the neck before turning downward on itself to become the descending aorta. Nineteen cases have been previously reported in the world literature with one more presently in publication. We have collected six additional cases, in four of which the cervical arch was located on the left. Formerly the left cervical aortic arch was felt to be much less common than the right. It now appears that they have equal incidence. Four of our cases were also associated with cardiac anomalies, and this coincidence has not been previously reported.

Adult↗

PubMed1974