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Biomedical subjects

P Perkins

Publications and source records attributed to P Perkins.

35 records · Page 2Linked to original sources
PubMed1992

MR of an adrenal pseudocyst.

We describe the appearance of an adrenal pseudocyst on MRI and CT. The MR characteristics of the lesion were noteworthy in that the lesion had two components with different imaging characteristics. The larger component was of low signal intensity on both T1- and T2-weighted images and might have been confused with an adrenal adenoma.

Adenoma↗
PubMed1991

Incidence and prevalence of amyotrophic lateral sclerosis in Harris County, Texas, 1985-1988.

The incidence of amyotrophic lateral sclerosis was determined in Harris County, Texas, for the period 1985 through 1988. Amyotrophic lateral sclerosis cases were ascertained from four sources: area neurologists, hospitals, death certificates, and the Muscular Dystrophy Association. The age-adjusted incidences of 1.27 per 100,000 person-years in males and 1.03 per 100,000 person-years in females were lower than recent rates in the northern US, Canadian, and northern European studies but higher than rates in southern European studies. Comparisons with other recent incidence studies show less uniformity in occurrence of amyotrophic lateral sclerosis, in both the overall rates and in the age- and sex-specific patterns, than was suggested by mortality studies. The incidence of amyotrophic lateral sclerosis among blacks and whites was similar. Hispanic males had incidences similar to white males, although a deficit of female Hispanic cases was found in Harris County. The prevalence of amyotrophic lateral sclerosis peaked in the 65- to 74-year age group at 33 per 100,000 population among males and 19 per 100,000 population for females.

Adolescent↗
PubMed1990

Outcome of referrals by optometrists to general practitioners: an 18 month study in one practice.

All general ophthalmic services forms (GOS18) received by one practice over an 18 month period were analysed and the patient outcome after two years noted from the practice records. Sixty one forms were collected. Fifty patients (82%) were referred by the general practitioners to the local eye hospital. Among the 45 patients that have so far been seen by an ophthalmologist, 22 (49%) were diagnosed as having cataracts, eight (18%) macular degeneration and two (4%) glaucoma. Thirteen patients (29%) were found to have normal eyes. Nine of the 61 patients (15%) were not referred to an ophthalmologist and two patients (3%) were already under review at the eye hospital. It is concluded that some referrals to ophthalmologists might be avoided if general practitioners received improved training in ophthalmology, However, general practitioners remain an effective filter in the referral system between optometrists and ophthalmologists.

Adolescent↗
PubMed1988

Indigenous human cutaneous leishmaniasis caused by Leishmania tropica in Kenya.

Six Leishmania isolates from 3 indigenous Kenyans (2 isolates from one patient) and 2 Canadian visitors in Kenya were characterized by cellulose acetate electrophoresis. The isolates were compared among themselves and with reference strains of Leishmania donovani, L. aethiopica, L. major, L. tropica, and L. arabica using 9 enzymes: malate dehydrogenase (MDH), malic enzyme (ME), phosphogluconate dehydrogenase (6PGD), glucose-6-phosphate dehydrogenase (G6PD), aspartate aminotransferase (ASAT), adenylate kinase (AK), mannose phosphate isomerase (MPI), glucose phosphate isomerase (GPI), and phosphoglucomutase (PGM). Enzyme migration patterns of isolates from the 3 indigenous Kenyans were indistinguishable from those of 2 L. tropica reference strains. The isolates from the 2 Canadians yielded migration patterns of 7 enzymes that were indistinguishable from those of 2 L. tropica reference strains. However, migration patterns of 2 enzymes, PGM and ME, differed from all migration patterns of the 10 reference strains. Balb/c mice were inoculated with stationary phase promastigotes cultured from 3 stabilates from the lesions of 2 of the Kenyan patients. The mice developed no gross pathological lesions in 6 months time. All of the study patients developed cutaneous leishmaniasis while living in or visiting districts in Central and Rift Valley Provinces, Kenya. This is the first report of human cutaneous leishmaniasis caused by L. tropica indigenous to Africa south of the Sahara.

Adolescent↗
PubMed1987

University of Rochester Child and Family Study: risk research in progress.

The University of Rochester Child and Family Study (URCAFS) is a risk research program concerned with cross-sectional and developmental relationships among three areas: parental psychopathology and health, family system functioning and dysfunctioning, and child psychopathology and health. The preliminary findings indicate that both parental psychopathology and family variables predict significantly to independent measures of school functioning of index sons during their childhood and early adolescence. Although the offspring have not yet reached the age of major risk for schizophrenia, 52 percent of the families have one or more offspring either in psychiatric treatment or for whom treatment had been recommended.

Adolescent↗
PubMed1975

Hepatoma associated with anabolic steroid therapy.

A patient with Fanconi's anemia who developed a hepatoma after 50 months of therapy with anabolic steroids is reported. The lesion presented as a cold focal defect on a Tc99m sulfur colloid scintigram, but was avascular on dynamic scintigraphy. Both the unusual avascularity of the hepatoma, and its association with anabolic steriod therapy are discussed.

Anabolic Agents↗