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Biomedical subjects

F W Sequeira

Publications and source records attributed to F W Sequeira.

6 recordsLinked to original sources
PubMed1984

Osseous metastases from renal cell carcinoma: embolization and surgery for restoration of function. Work in progress.

Five patients underwent preoperative embolization of osseous metastases from renal cell carcinoma. The group consisted of four men and one woman who ranged in age from 46 to 79 years. The lesions were located in the pubic ramus and acetabulum, proximal femur, femoral midshaft, proximal humerus, and proximal tibia. All embolizations were performed within 24 hours of surgery. The internal fixation and tumor curettage was accomplished with estimated perioperative blood loss ranging from 10 ml to 1,250 ml. All patients had significant restoration of function following surgery. We suggest that preoperative embolization is an important and efficacious adjunct in the management of hypervascular renal cell osseous metastases.

Adenocarcinoma↗
PubMed1983

The diagnostic dilemma of the posterior mediastinal thymus: CT manifestations.

Extension of the normal thymus into the posterior mediastinum is rare. The CT appearance of this anomaly in an infant is presented. A mass of soft-tissue density extended from the anterior mediastinum to the posterior chest wall. The absence of any tissue-cleavage plane in the lesion and a smooth continuous lateral margin are signs of posterior extension of the thymus, and they help to distinguish this from a normal anterior thymus being present with a posterior tumor.

Diagnosis, Differential↗
PubMed1982

Femoral artery spasm in children: catheter size is the principal cause.

The incidence of femoral artery spasm and subsequent thrombosis complicating angiography is greater in children than adults. This study was designed to assess femoral artery spasm and to determine its causes in children. In 100 unselected, consecutive infants and children undergoing left heart angiocardiography by the Seldinger technique, angiography of the femoral artery was performed to include the puncture site after completion of angiocardiography. Arterial spasm was quantified and, with mathematical analysis, related to various clinical and angiographic factors. Some degree of arterial spasm was noted in 62% of all cases; it was more frequent and severe in neonates. Although it was more intense in the infant with a small femoral artery, analysis of the data indicates that patient age, weight, length of catheterization, size of femoral artery, and catheter size have only minimal relative importance in the occurrence and severity of arterial spasm. The most important factor in spasm is the relative size of catheter to artery.

Adolescent↗
PubMed1980

Seldinger sinography.

It is very important to have a thorough knowledge of the anatomy of cutaneous sinuses and fistulae prior to surgical intervention. This paper describes a modification of the Seldinger technique for the demonstration of these sinuses and fistulae, especially those extending into bone.

Bone Diseases↗