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Biomedical subjects

G Cadavid

Publications and source records attributed to G Cadavid.

5 recordsLinked to original sources
PubMed1986

Sonography in the diagnosis of hepatic artery aneurysms.

In five cases of hepatic artery aneurysms, the findings on sonography suggested the diagnosis or indicated the need for angiography. The intrahepatic aneurysms (four cases) were anechoic, well-circumscribed masses with good through transmission of sound. None were pulsatile, but flow within the mass was observed in one case. An intrahepatic mass adjacent to the aneurysm was identified in every case, representing hematoma in three and postoperative abscess in one. The sonogram in a patient with a common hepatic artery aneurysm (one case) showed a lobulated, pulsatile, anechoic mass within a pancreatic head pseudocyst. Sonography offers a noninvasive means of screening for this abnormality.

Adolescent↗
PubMed1982

Localization of the source of hyperinsulinism: percutaneous transhepatic portal and pancreatic vein catheterization with hormone assay.

Insulin concentrations were measured in the portal venous system through the percutaneous transhepatic approach in 12 patients with organic hyperinsulinism. Single insulinomas were found in 10, an adenoma and islet cell hyperplasia in one, and nesidioblastosis in one patient. Angiography localized adenomas in two. Local step-ups of insulin levels in the portal venous system, found in all patients with insulinomas, corresponded to tumor sites at surgery. Multiple step-ups were found in the portal venous system of the patient with nesidioblastosis and the patient with an adenoma with islet cell hyperplasia. Three tumors were localized in the head of the pancreas which would indicate the primary surgical approach rather than blind resection of the body and tail. Three of the 10 adenomas were not identifiable by palpation after pancreatic mobilization during surgery. In all patients, organic hyperinsulinism was cured after surgery. Percutaneous transhepatic portal and pancreatic vein catheterization with measurement of radioimmunoactive insulin concentrations is a safe and reliable method and may play an important role in the localization of adenomas in patients with normal angiographic studies and previous negative surgical explorations.

Adenoma↗
PubMedDate not supplied

Controlled tissue expansion with guided bone regeneration.

Guided tissue regeneration techniques are used to create new bone around implant defects and to augment edentulous ridges prior to implant placement. A new technique, tested successfully in baboons, utilizes soft tissue expanders prior to implant placement and tissue regeneration procedures.

Alveolar Bone Loss↗
PubMedDate not supplied

Vertebral artery trauma: transcatheter embolization.

Injuries of the vertebral arteries in four patients were treated by transcatheter embolization. Embolotherapy was performed after incomplete or unsuccessful surgery in three of the patients and as a preventive measure in lieu of surgery in the fourth patient. All procedures were successful and without complications. An injured vertebral artery is usually extremely difficult to approach surgically, but because of extensive collateral blood supply it is usually expendable; therefore, it becomes an inviting target for management by interventional angiographic techniques. Embolotherapy of an injured vertebral artery is easier, faster, and safer than its surgical ligation and, therefore, decidedly superior. With few exceptions, embolotherapy should be considered the preferred method in the management of vertebral artery trauma.

Adult↗