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Biomedical subjects

B M Rodgers

Publications and source records attributed to B M Rodgers.

136 records · Page 8Linked to original sources

Reduction of postperfusion cytomegalovirus-infections following the use of leukocyte depleted blood.

After extracorporeal perfusion some patients develop evidence of cytomegalovirus (CMV) infection. It is proposed that antigenically stimulated donor and recipient leukocytes may divide and activate latent CMV associated with leukocytes. To test this hypothesis, alternate patients were perfused with leukocyte-depleted or whole blood (controls). Four of six controls who were CMV antibody negative preoperatively seroconverted after perfusion. Virus was recovered from the blood of three and from the urine of two of these patients. One of four controls who were seropositive preoperatively developed a significant titer rise. Only one of eight patients perfused with leukocyte poor blond who were seronegative prior to surgery developed a viremia and became antibody positive; another manifested a viruria but remained antibody negative. These findings are consistent with the proposed hypothesis and suggest a means for reducing transfusion-associated CMV infections.

Antibodies, Viral↗

Duodenal gangliocytic paraganglioma occurring in adolescence.

A 15-year-old boy complained of abdominal pain and massive upper gastrointestinal hemorrhage. Endoscopic evaluation demonstrated an ulcerated, submucosal mass involving the ampulla. This was locally excised and found to show the characteristic histologic and ultrastructural features of a gangliocytic paraganglioma. Similar lesions have been reported in 29 patients with a mean age of 55 years (range, 32-80). Twenty-six patients complained of abdominal pain or gastrointestinal bleeding, symptoms that mimic those of peptic ulcer disease. These tumors are uniformly benign, nonencapsulated, and submucosal. They usually arise in the second portion of the duodenum and are treated by simple excision. This patient is the youngest reported, and his case is presented as an illustration of an unusual tumor that can masquerade clinically and radiologically as a duodenal ulcer. The importance of endoscopic evaluation is stressed.

Adolescent↗

Successful treatment of a patient with stage IV rhabdoid tumor of the kidney: case report and review.

The clinical course of a 31-month-old patient with advanced (stage IV) rhabdoid tumor of the kidney (RTK) and an analysis of treatment variables that may impact survival are presented. Treatment included complete resection of abdominal disease, radiation therapy to the abdomen and chest, and chemotherapy on a schedule of dose intensification by reduction of the interval between cycles. Inclusion of doxorubicin in treatment was associated with survival among patients in published series (P = 0.002). The patient was in continuous complete remission 60 months from diagnosis. Stage IV rhabdoid tumor of the kidney can be effectively treated with intensive multimodal therapy. Doxorubicin may be an important component of a successful therapeutic regimen.

Child, Preschool↗

Trauma and the child.

Despite better prevention programs and emergency medical care, trauma continues to be the leading cause of death in children. Children present very special anatomic, physiologic, and psychological problems to the emergency room physician, and the spectrum of injury in these young patients may be significantly different from that seen in adult trauma victims. These factors make immediate diagnosis and early appropriate therapy for these young patients imperative to a successful outcome. A few unique forms of injury have been reviewed in this article and their diagnosis and management discussed.

Abdominal Injuries↗

Medullary carcinoma of the thyroid in the multiple mucosal neuromas syndrome.

The clinical features of the multiple mucosal neuromas (MMN) syndrome permit the recognition of these patients and their potential development of the associated medullary thyroid carcinoma (MTC). The distinctive physical appearance caused by the mucosal neuromas, the Marfanoid habitus and, occasionally, the positive family history aid in establishing the diagnosis. Neurogangliomas are frequently present in the gastrointestinal tract of these patients who may have megacolon, constipation and diarrhea. The third instance of the MMN syndrome is reported in the newborn as intestinal obstruction. It is suggested that the syndrome be considered in the differential diagnosis of Hirschsprung's disease and bowel obstruction in the neonate. Serum calcitonin measurements following stimulation by calcium or pentagastrin infusion reliably detect incipient MTC and may be used to select those MMN patients requiring thyroid surgery. Recognition of patients with the MMN syndrome and subsequent calcitonin screening and early surgical intervention will significantly reduce the chance of their developing terminal MTC. All MMN patients with mucosal neuromas or intestinal neurogangliomas should have such evaluations at least yearly. Relatives who are at risk for inheriting this dominant disease should be similarly evaluated, regardless of their normal appearance.

Adrenal Gland Neoplasms↗