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Biomedical subjects

A Caresano

Publications and source records attributed to A Caresano.

At least 19 recordsLinked to original sources
PubMed1993

[Percutaneous angioplasty of arterio-venous fistulae with Zijlstra catheters].

Brescia-Cimino arteriovenous fistulas are the most common vascular accesses in hemodialysis patients. Arterial blood pressure inside the vein and repeated punctures cause progressive sclerosis of the vessel wall and stenosis or occlusion are the final outcome. Percutaneous dilatation is an effective method to preserve arteriovenous fistulas function. From January 1991 through December 1992, eleven dilatations were performed in 10 patients (7 women and 3 men, mean age: 55 years) using a Zijlstra dedicated catheter provided with multiple infusion holes, which allows long dilatation times and therefore progressive wall distention. A high-pressure balloon yields better results in case of stiff and diffuse stenosis. The immediate results of the maneuver were good in all patients. One acute thrombosis of the fistula was observed a few hours after the procedure, and a second dilatation was performed in a patient 8 months after the first one. Mean arteriovenous fistula patency time was 6 months. Finally, a critical review of the international literature on the subject is made and the value of dilatation in the treatment of fistula stenosis is reported; the necessity to use new dedicated catheters in also stressed.

Adult↗
PubMed1988

[Percutaneous transluminal angioplasty of supra-aortic vessels. Presentation of 16 cases].

Sixteen cases are reported of dilatation of supra-aortic vessels; in 14/16 patients the vessel involved was either the subclavian artery or the brachiocephalich trunk. Special attention is paid to the choice of patients--the ideal one presenting with a single uncalcified lesion, with stenosis more than 50% of diameter; the symptoms have recently appeared, with a significant difference (more than 20 mmHg) in the pressure of the two arms. The technical aspects of the angioplastic procedure are discussed, especially in order to preserve the intracranial circulation and to limit possible complications. The presence of reversed blood flow in the vertebral artery is extremely important to preserve intracranial circulation from possible embolism; normal flow obtained at the end of the procedure is therefore an useful proof of successful dilatation. The advantages are stressed of dilatation over the surgical techniques used in the past. Finally, the importance is emphasized of a correct follow-up and doppler control of supra-aortic circulation.

Angioplasty, Balloon↗
PubMed1986

[Five-minute urogram: is it sufficient for a diagnosis?].

It has been demonstrated, studying in retrospect a great number of urographies, that the most reliable urogram is the 5 minute urogram (5-U) after the end of the infusion of ionic contrast medium. The authors therefore, in order to save costs and dose to the population, suggest to simplify the urographical routine examination executing only 5-U. This is suggested especially in urographical evaluation of urolithiasis, urinary tract infections, prostate pathology, pelvic masses, pathologies in which 5-U is highly reliable. Very important is the immediate evaluation of 5-U, that allows to complete the urographical examination when necessary.

Adult↗
PubMed1983

The role of embolization in the treatment of kidney carcinoma.

Although embolization is widely employed in kidney cancer patients, it is not yet clearly understood whether the procedure may influence the natural history of the disease. The writers' experience consists of 99 embolized patients, performed since 1976. The effects of the procedure were reduction of tumor bulk, creation of a good edematous cleavage plane, and shrinkage of venous thrombi. In stage I and II cases embolization seems to have prolonged the survival times of patients who died of tumor, but in stage III and IV cases no difference can be detected between the embolized and nonembolized groups, whereas in stage IV cases only palliative surgery allows better survival times.

Adenocarcinoma↗
PubMed1980

A case of renal oncocytoma.

A case of renal oncocytoma angiographically diagnosed and successfully treated by in situ tumorectomy under local hypothermia is presented.

Adenoma↗
PubMed1979

[Lumbar phlebography: anatomy and technique (author's transl)].

This article describes the normal radiological anatomy of the epidural veins whose understanding is necessary for the correct interpretation of venographic studies. Three ways of achieving adequate visualization of the epidural venous plexus are described. Experience with 80 cases is reported; a comparison has been made among the degree of visualization of the epidural venous plexus, the length of time, the cost and the amount of radiation received by the operator and patients during the performance of each technique. Preference is expressed for simultaneous injection of contrast media via two needles introduced into right and left femoral veins.

Catheterization↗
PubMed1978

[Malignant insuloma. Evaluation of the response to treatment with streptozotocin, using selective arteriography of the celiac axis].

A patients with metastatic insulin-producing islet-cell carcinoma has been treated with Streptozotocin intravenously and studied by selective celiac angiography during treatment. A 50% decrease of the tumor's size has been demonstrated by this technique after a total dose of 19 grams of the drug together with return to normal of the serum-insulin and blood-glucose values. The usefulness of angiography in evaluating the tumor response to Streptozotocin and in managing chemotherapy is discussed.

Adenoma, Islet Cell↗
PubMed1978

[Cholangiocarcinoma in a patient with hepatosplenic atrophy subsequent to thorotrast administration (author's transl)].

A case of cholangiocarcinoma observed in a woman of 38 following carotidographic examination with Thorotrast is described: the presence of radioactivity was also demonstrated by gamma spectrometry. The high mean dose absorbed by the liver (estimated at about 3,000 rad) together with the high relative biological effectiveness of the alpha contribution and the time lapse justify the hypothesis that the neoplasia was caused by irradiation.

Adenoma, Bile Duct↗
PubMed1978

Selective arterial embolization in renal tumors.

Selective arterial embolization with Gelfoam was performed in 45 cases of hypernephroma. In 33 cases this technique has been utilized as preoperative procedure and almost always (97%) nephrectomy was facilitated: 97% of the cases had slight or moderate operative bleeding; in 82% of the cases separation of the tumor-containing kidney from adjacent tissues was easy. Embolization has been employed in 12 inoperable patients and was effective mainly in management of bleeding. Angiographic controls after embolization (from 13 to 162 days) were performed 8 times and it was assessed that the efficacy of the procedure on primary tumor growth is limited in time by renal artery revascularization. The embolized patients never presented severe complications, except several episodes of transitory renal failure.

Adenocarcinoma↗