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Biomedical subjects

M A Oviedo

Publications and source records attributed to M A Oviedo.

4 recordsLinked to original sources

Symptomatology as an indicator of recurrent or metastatic breast cancer.

Eighty-seven patients with recurrent breast cancer after mastectomy were analyzed for patterns of recurrence and methods of detection. After an average disease-free interval of 30 months, 38% developed osseous metastases, 16% recurred locally, 10% had local plus systemic disease, 10% showed pulmonary metastases and the remainder were distributed among liver, brain, and remaining breast disease. In 79 patients recurrence was heralded by symptoms. Physical examination in five asymptomatic patients revealed local or supraclavicular recurrence. In only three asymptomatic patients was recurrence documented by "routine" chest x-rays (in two), or liver enzymes/liver scan (in one). No asymptomatic disease was found by bone scan. It is concluded that periodic history, physical examination, and chest x-rays are the most important components in the follow-up of breast cancer patients. Radioisotope scans and other radiographs are valuable in confirming symptomatic disease and detecting additional diseases, but cannot be recommended routinely in the asymptomatic patient because of low yield and cost.

Bone Neoplasms

Irradiation-induced polyglandular neoplasia of the head and neck.

Eighteen patients are presented with twenty-one tumors of the head and neck, which include ten salivary gland tumors and eight parathyroid adenomas. Eight of the patients also had thyroid neoplasms. All patients had a history of prior irradiation to the head and neck. Seventy per cent of the salivary gland tumors and 37 per cent of the thyroid tumors were malignant. Recommendations are made for detection and treatment.

Acne Vulgaris

Gallbladder bile composition in different ethnic groups.

A total of 194 gallbladder biles from various ethnic groups were analyzed for their composition. The solubility of cholesterol in bile was determined mainly by its relative amounts of phospholipid and bile salt present. Bile from patients with gallstones was usually supersaturated with cholesterol above the boundary of the metastable state. Biles from normal white subjects of Finland, New Zealand, and the United States were already in the metastable state of supersaturation with cholesterol. The Masai of East Africa and black subjects of the Unites States had a bile level below the limit of maximum cholesterol solubility. This study indicates that the difference in the prevalence of cholesterol cholelithiasis in various ethnic groups was related to the difference in their bile compontified factors.

Black or African American

By-pass anastomosis of intrahepatic duct to the gallbladder.

Obstruction of the extrahepatic bile ducts by primary or metastatic carcinoma can sometimes be diffiult to relieve. Frequently there is an inadequate length of normal duct proximal to the obstruction to permit an anastomosis. A by-pass anastomosis between a dilated right hepatic biliary radicle and the gallbladder is a simple and satisfactory method of relieving the jaundice. This can be accomplished by using a T-tube as a stent; a vein graft over the T-tube limb in the liver seems to improve the result.

Adenocarcinoma