PubMed Health⌕ Search

Biomedical subjects

R L Morris

Publications and source records attributed to R L Morris.

At least 37 records · Page 2Linked to original sources
PubMed1982

Solitary neurofibroma of the maxilla.

A case of a large central neurofibroma of the left posterior maxilla is presented. This lesion was treated by a left radical maxillectomy because of the extensive nature of the tumor. The surgical defect was reconstructed with a latissimus dorsi myocutaneous flap. The incidence and clinical features of intraosseous benign nerve sheath tumors are discussed.

Adult↗
PubMed1980

ADCC effector function in patients with atopic dermatitis. A possible mechanism of susceptibility to severe cutaneous viral infections.

Peripheral blood mononuclear cells from patients with chronic atopic dermatitis were evaluated as effectors of antibody-dependent cellular cytotoxicity (ADCC) to determine if faulty effector function might explain the susceptibility of atopics to severe cutaneous viral infections in spite of adequate specific antibody titers. Eleven atopic patients whose dermatitis was well controlled and who were not infected or on immunosuppressive therapy were studied using sensitized human and chicken erythrocyte targets at three different effector:target ratios. No significant differences in mean ADCC were seen between atopics and controls. However, the function of peripheral blood mononuclear cells from atopic patients who had a previous history of severe cutaneous viral infection was significantly depressed against sensitized chicken, but not human targets. This suggests that atopic patients who develop severe cutaneous viral infections may represent a subset of atopics with an intrinsic or variable defect in K lymphocyte--mediated ADCC which might render them susceptible to persistent, extensive viral infections.

Adult↗
PubMed1980

Reconstruction of the lower extremity with vascularized composite tissue: improved tissue survival and specific indications.

A retrospective assessment of 50 vascularized composite tissue transfers was carried out with 48 patients. Factors responsible for improved tissue survival included (1) the evaluation and proper selection of recipient vasculature, (2) the increased dependence on the vacularized latissimus dorsi musculocutaneous flap, and (3) the frequent use, wherever possible, of an end-to-side arterial anastomisis. Specific indications for reconstruction of the lower extremity with vascularized composite tissue include (1) avulsive injuries to the distal tibia and foot, (2) the failure of conventional methods, (3) the treatment of extensive chronic osteomyelitis, (4) deficiency of both soft tissue cover and skeletal support, (5) the restoration of form and contour with minimal secondary deformity of the donor site, and (6) extensive loss of soft tissue only. Reconstruction of the lower extremity with vascularized tissue is a reliable method with acceptable patient and tissue morbidity statistics that should be considered when specific indications are present.

Amputation, Traumatic↗
PubMed1980

Xylary pH and Reduction Potential Levels of Iron-stressed Silver Maple (Acer saccharinum L.).

Xylary fluid pH and reduction potentials were measured on silver maple (Acer saccharinum L.) grown under Fe and pH stress. Although pH and reduction potential (millivolt/59.2) varied significantly in the nutrient solution, xylary pH and reduction potential remained constant. It was concluded that changes in the pH and reduction potential in the xylary fluid of silver maple are not responsible for iron chlorosis.

Journal Article↗
PubMed1975

Endometriosis causing acute small bowel obstruction: report of a case and review of the literature.

Endometriosis causing acute small bowel obstruction is a clinical complex which should be considered in the differential diagnosis of intestinal obstruction. Theories as to etiology and pathogenesis are discussed. The best clue to preoperative diagnosis of the lesion is a careful history with regard to previous episodes of ileus having menstrual periodicity. The lesion itself usually causes obstruction by kinking or volvulus secondary to serosal adhesion formation, and more rarely by stenosis or intussusception. The treatment of total small bowel obstruction secondary to endometriosis is surgical, with resection of the involved bowel and end-to-end anastomosis.

Adult↗