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A Fretzayas

Publications and source records attributed to A Fretzayas.

24 records · Page 2Linked to original sources
PubMed1984

Estimates of dose to the bladder during direct radionuclide cystography: concise communication.

We estimate the absorbed dose to the bladder walls, Db, due to [99mTc]pertechnetate direct radionuclide cystography, with due consideration to the dynamic nature of the examination. Our analytical method resulted in Db values expressed as functions of the bladder filling time. These values are compared with published data based on a static bladder model. It is shown that the Db value depends strongly on the protocol under which the examination is carried out. It is also shown that the normal saline flow rate and the time of the administration of the radioactive material can be adjusted so that the radiation burden may be greatly reduced.

Adult↗
PubMed1983

Hydatid disease in Greek children.

The surgical incidence of hydatidosis in the Greek population aged 0-18 years was investigated. Discharge and operating room records from 1 January 1969 through 31 December 1975 in all hospitals of the country were reviewed. Data were statistically analyzed according to geographical and annual distribution of the disease, age, sex, and organ affected. Of a total of 4,566 patients with hydatidosis, 534 (11.7%) were 0-18 years old. By extrapolation, operations in this age group were performed at a rate of 2.7/100,000 population per year. Surgical incidence of hydatidosis varies among different geographical areas in Greece; its percentage is highest in rural areas. The disease is more frequent in boys than in girls (P less than 0.01). Lungs and liver are the most commonly involved organs (94.2%). Lung involvement is more frequent in boys (73.0%) than in girls (50.5%) (P less than 0.001).

Adolescent↗
PubMed1983

Hydatid disease in asymptomatic young carriers in northern Greece.

An epidemiological survey to determine the prevalence of echinococcosis in children and adolescents was made in Grevena County of northern Greece. Counterimmunoelectrophoresis was used to screen 2,736 school children whose ages ranged from 6-18 years; among them, three asymptomatic carriers were identified. The diagnosis was subsequently confirmed by liver radioisotope scanning. By extrapolation, we estimate that the point prevalence of hydatid disease in the asymptomatic population of the study area is 110 per 100,000.

Adolescent↗
PubMed1982

Spleen size changes in children with homozygous beta-thalassaemia in relation to blood transfusion.

18 thalassaemic children, aged 3.5 to 13 years comprise our clinical material. In 14 of them clinically elicited spleen markings, haematocrit, blood platelet count and red cell morphology were studied daily for the whole period between transfusions. In 10 patients considerable changes in spleen size were noticed. According to out clinical observations the spleen size starts decreasing 1 to 3 d after blood transfusion up to the 10th posttransfusion day fluctuating thereafter to reach its maximum size again prior to the next blood transfusion. The decrease of spleen size was followed by an increase of haematocrit and blood platelet count and vice versa. 4 additional children were studied clinically only twice: prior to and 7 to 10 d after blood transfusion. A definite decrease of the spleen size following blood transfusion was observed. Spleen and liver 99mTc-sulfur colloid uptake was studied in 10 of the above children prior to and 7 to 10 d after blood transfusion. Statistically significant post-transfusion increase of the spleen uptake was demonstrated. Our findings suggest that (a) splenic size is relevant to blood volume sequestrated int this organ, (b) splenic radioactive uptake increases with its post-transfusion reduction in size.

Adolescent↗
PubMedDate not supplied

A case of non-Fanconi anemia bone marrow dysfunction with familial involvement.

We report on a Greek girl with pancytopenia, short stature, clinodactyly, cleft palate, exopthalmus, strabismus, café-au-lait spots, and mild mental retardation in whom chromosomal analysis excluded Fanconi anemia. The occurrence of erythroleukemia in the family and the presence of macrocytosis in her father and low blood counts in her sister favor the diagnosis of an inherited syndrome of familial marrow dysfunction rather than that of a sporadic case.

Abnormalities, Multiple↗