Radiology

Meyers, Morton A.; McSweeney, James

doi: 10.1148/105.1.1pmid: 5066554

On the basis of 107 cases, the authors applied and evaluated a practical classification in the roentgen analysis of secondary bowel neoplasms. A distinction was made between direct invasion, intraperitoneal seeding, and hematogenous metastases. Characteristic radiologic features are helpful in identification of the mode of dissemination and as indicators of the likely primary site. The role of anatomic relationships and mesenteric attachments, particularly in cases of direct invasion, is stressed. The distribution of seeding correlates with the known pathways of spread and localization of intraperitoneal fluid. The frequency and appearance of melanoma and breast embolic metastases are emphasized. Index terms Intestinal Neoplasms, classification Intestinal Neoplasms, diagnosis

Wallace, Sidney; Medellin, Hector; Nelson, Robert S.

doi: 10.1148/105.1.13pmid: 5057294

Symptomatic complications of percutaneous needle biopsy of the liver are uncommon, however, they are occasionally demonstrated on postbiopsy angiograms. Angiographic findings include needle tracts, arteriovenous fistulas, hematoma, and aneurysms and pseudoaneurysms. These complications were not serious and except for hematoma required no further treatment. Index terms Aneurysm, hepatic Liver, biopsy Liver, hematoma

Ross, Lawrence S.

doi: 10.1148/105.1.19pmid: 5057305

Precipitated Gastrografin was noted in the stomach of a gunshot patient 48 hours after instillation. To ascertain the cause of this finding, Gastro grafin was mixed with various dilutions of hydrochloric acid (0.05 to 1.2 N) and with gastric juice. A white opaque material precipitated promptly and solidified within 2 hours in the milder solutions and immediately in the stronger mixtures. This precipitate is water insoluble carboxylic acid. To avoid possible confusion of precipitated contrast material with a radiographic abnormality, alkalinization of the stomach prior to administration of contrast material, immediate flushing of the stomach after the study, or aspiration of the contrast material are suggested. Index terms Contrast Media Stomach, radiography

Giustra, Peter E.; Root, John A.; Killoran, Paul J.

doi: 10.1148/105.1.23pmid: 5057310

A case of rectal diverticulitis with perforation into the recto-vaginal septum with a correct preoperative diagnosis is presented. This rare entity has heretofore been confused with carcinoma, resulting in unnecessary abdominal perineal resection. Drainage of the rectal-vaginal abscess per vaginum and oversewing of the diverticular opening without bowel resection produced excellent results. Index Terms Rectum, diverticula Rectum, perforation

Silverman, Norman R.; Intaglietta, Marcos; Tompkins, William R.

doi: 10.1148/105.1.25pmid: 5057311

Renal cortical transit times in dogs were measured by videodensitometry. The calculation of two, interdependent parameters gives normal values for canine kidneys. A relatively simple, inexpensive device, the videodensitometer should provide meaningful clinical information on renal vascular perfusion. Index Terms Densitometry Kidneys, blood supply Renal Angiography, technique Television Copyrighted 1972 by the Radiological Society of North America, Inc.

Ekelund, Leif; Göthlin, Jan; Lunderquist, Anders

doi: 10.1148/105.1.33pmid: 4341512

The intra-arterial administration of 0.5 µg of angiotensin immediately prior to renal angiography may increase diagnostic accuracy in cases of renal and renal pelvic carcinoma. As cysts and neoplasms may coexist in the same kidney, the authors recommend the injection of angiotensin to reveal tumor vessels. Index terms Renal Angiography, technique

Craven, J. Duncan; Hodson, C. John; Lecky, James W.

doi: 10.1148/105.1.39pmid: 5057312

Twenty cases in which a kidney showed an atypical response to a period of obstruction are presented. The kidney was small, with a smooth outline, a reduced rate of urine production; and a reduced contrast medium concentration in the urine. The papillae, however, were normal or near normal in contrast to the expected atrophy of papillae in the typical postobstructive state. This response appears to be due to a combination of obstruction and ischemia. It is suggested that previous obstruction be considered in the differential diagnosis of any “miniature” kidney. Index terms Kidneys, atrophy Kidneys, obstruction Ureter, obstruction Copyrighted 1972 by the Radiological Society of North America, Inc.

Madayag, Manuel; Bosniak, Morton A.; Beranbaum, Elliott; Becker, Joshua

doi: 10.1148/105.1.43pmid: 5057313

Variations in the contour and position of the spleen simulated renal or suprarenal masses on routine radiographic studies in 5 patients. Angiography was able to determine the true etiology of the apparent masses in 4 (assisted by isotopes in one case). Localized flattening of the upper pole of the kidney, usually thought to indicate adrenal disease, was seen in 3. Splenic variations included a lumpy spleen, a transverse spleen with a prominent superior pole, a rotated and ptotic spleen, a depressed spleen, and an accessory spleen. Index terms Adrenals, neoplasms Kidney Neoplasms Spleen, abnormalities Copyrighted 1972 by the Radiological Society of North America, Inc.

Collins, James D.; Furmanski, Stanley; Steckel, Richard J.; Snow, Harold D.

doi: 10.1148/105.1.49pmid: 5057314

Linked silicone rubber nodules of uniform size containing a monoblastic crystal of calcium phosphate Ca(H 2 PO 4 ) 2 ·H 2 O were implanted in a phantom chest and in the peripheral lung field of a living dog. Lateral and anteroposterior chest films and laminagrams revealed that the smallest calcium deposit demonstrable was 0.1 mg (0.4 µmoles of salt). Index Terms Lungs, calcification Copyrighted 1972 by the Radiological Society of North America, Inc.

Collins, James D.; Burwell, Douglas; Furmanski, Stanley; Lorber, Peter; Steckel, Richard J.

doi: 10.1148/105.1.51pmid: 5057315

To determine the minimal amount of fluid required for routine radiographic recognition of pleural effusions, a model was devised using artificial pleural effusions produced in cadavers. As little as 25 ml was shown to cause elevation of the apparent level of the diaphragm on both postero-anterior and lateral upright chest films. Index Terms Pleura, fluid Copyrighted 1972 by the Radiological Society of North America, Inc.