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Biomedical subjects

V Castel

Publications and source records attributed to V Castel.

At least 55 records · Page 3Linked to original sources
PubMed1987

[Acute lymphoblastic leukemia of high risk: results of a therapeutic protocol].

Sixteen consecutive children diagnosed of "high risk" acute lymphoblastic leukemia were treated with a protocol including VM-26, ARC and intermediate-dose Mtx. Complete remission was obtained in 94 por 100 of patients. Actuarial haematologic remission rate at 36 months is 87% and continuous complete remission rate 58%. Twelve doses of Mtx (IV + IT) appear to be insufficient as SNC prophylaxis in these high risk children. Nevertheless hematologic relapse rate is very low. Mean follow-up time is 31 months and survival rate 87%.

Antineoplastic Combined Chemotherapy Protocols↗
PubMed1987

[131I-MIBG-meta-iodobencylguanidine (131I-MIBG) in the study of neuroblastoma].

Ten patients with neuroblastoma were scintigraphed with I131-meta-iodobenzylguanidine (MIBG). Lugol solution was previously administered orally to all patients in order to avoid uptake of radioactive iodide by the thyroid gland. The compound was injected intravenously, 0.5 mCi/1.73 m2 of body surface. Scintigraphy was performed at 24, 48 and 72 hours and 6-7 days after administration of the radioactive preparation. Positive radiotracer uptake was demonstrated in all primitive tumors and metastases, showing a positivity of 100%. MIBG has proven to be the most useful technique in defining the stage of the disease. Mechanism of the tumoral uptake in relationship to catecholamine metabolism is discussed. Differences observed in MIBG radioactivity seen in the urinary bladder, heart and liver in children with or without. Neuroblastoma are discussed. MIBG has also been useful in the follow-up of patients with neuroblastoma.

3-Iodobenzylguanidine↗
PubMed1985

[Mediastinal tumors in children].

Forty patients with primary mediastinal masses, treated at the Children's Hospital "La Fe" between 1971-1983, were review. Malignant neoplasms were the most common pathology in this series (23 cases), followed by benign lesions (10 cases), congenital malformations (five cases) and inflammatory diseases (two cases). Complementary explorations for the preoperative evaluation of theses masses is discussed. Surgical removal was carried out on all tumors. Mortality caused by performing biopsy on lymphomas was high. Two of the five congenital malformations were removed. The other three did not receive any therapy. All patients having benign tumors are alive except one who had a cardiac teratoma diagnosed at necropsy. Eleven of the patients with malignant neoplasms are alive, with a median follow-up time two years and nine months.

Child↗
PubMed1985

Cytogenetic study in six Spanish patients with Burkitt's lymphoma.

A cytogenetic study carried out on affected tissues of six children with Burkitt's lymphoma revealed five cases with a typical translocation (8q-; 14q+) and one with a variant t(2p-; 8q+). Additional cytogenetic variations were present in three cases. One had two acrocentric marker chromosomes comprised of material from chromosome #1 (1q21----q44) translocated to the Y gonosome. The other two cases had a cytogenetic alteration of chromosome #12. Cytogenetic studies carried out systematically in Burkitt's lymphoma could be a great help in possibly establishing differences in the biologic and clinical aspects of cases presenting with the t(8;14) versus cases with variant translocations, as this would allow for classification of these patients into groups which, at present, cannot be differentiated using other diagnostic methods.

Adolescent↗
PubMed1983

[Diagnostic errors in nephroblastoma].

We review 37 patients diagnosed of Wilms' tumor at the Clinica Infantil "La Fe", in the last ten years, looking at the misdiagnosed cases. In two children, histological study showed a multilocular renal cyst. We also report a case previously diagnosed as being a multicystic kidney; the histological study revealed, however, a cystic partially differentiated nephroblastoma. No case of extrarenal tumors was present in the misdiagnosed patients. We comment the difficulties to make a correct diagnosis when confronted with the above mentioned entities and before histological data are available.

Diagnostic Errors↗
PubMed1983

[Wilms' tumor. Clinico-prognostic correlates].

A series of 42 children with Wilms' tumor collected in 11 years is reported. The female-to-male ratio was 1,5:1 and 85 per cent of the patients were under 5 years at diagnosis. The majority of the tumors were Stage I (38 per cent) followed by Stages III and IV. Pathological findings following Belkwith's criteria are commented upon. The 5 year survival was 72 per cent, and tumor-free survival was 62 per cent. There was a clear relationship between survival and Stage, age and the presence or absence of intra-abdominal lymph-node spread. Efficacity of preoperative chemotherapy and its' influence on the stage of tumor at operation is discussed.

Child↗
PubMed1983

[Malignant histiocytosis in children].

Three cases of malignant hystiocytosis in infants are reported. Two of them are medullary hystiocytic reticulosis and the other one familial erytrophagocytic lymphohystiocytosis. Clinical and pathological differences and similarities between both entities are discussed. Our experience sustains the hypothesis that RHM and LEF are two forms of a same disease.

Age Factors↗
PubMed1982

[Epidemiology of leukemia in children in Valencia (author's transl)].

The incidence of leukemia in Valencia in children zero-seven years old, during a period of ten years (1970-1979), is studied. One hundred and fifty five cases of leukemia were diagnosed on five hospitals during this time. This makes an incidence of 3.5 cases per 100,000 children and years. A light predominance of males was observed and the peak age of presentation was between two and five years. Acute lymphoblastic leukemia was the more frequent variety, followed a big distance by acute myeloid. The relation with other factors, as chromosome abnormalities, parents age, socioeconomic level, are also studied.

Age Factors↗
PubMed1980

[CNS prophylaxis in acute lymphoblastic leukemia (author's transl)].

Results of CNS prophylaxis of 43 LLA children are studied. Prognostic characteristics of the group, follow-up time, and controls made are reported. Prophylaxis was made with intrathecal methotrexate associated to craneal (24 patients) or craneospinal irradiation. There was a 13% of meningosis between three and 27 months of the first complete remission. There were no differences of effectiveness between the two methods of treatment. The side effects were mild. Fifty five percent of patients showed fever, and vomits after intrathecal methotrexate injections, and 16% somnolence postradiotherapy syndrome. There were two more severe complications, one sepsis and one necrotizing leukoencephalopathy.

Administration, Oral↗
PubMed1975

Clinical tolerance and catabolism of plasmin-treated gamma-globulin for intravenous application.

Plasmin-treated gamma-globulin of placental origin was tested in clinical and laboratory studies and found to be suitable for intravenous use both for prophylactic and therapeutic purposes. Plasmin treatment of gamma-globulin (IgG) results in proteolytic cleavage of 60-70% of the molecules into Fab and Fc fragments whereas 30-40% of the molecules are plasmin resistant. The antibody spectrum of plasmin-treated gamma-globulin is similar to that of standard gamma-globulin. Catabolic properties of the plasmin-resistant portion of this preparation and of standard gamma-globulin are identical. Plasmin-treated gamma-globulin has no anticomplementary activity and its intravenous administration is well tolerated even by highly sensitive immunodeficient patients.

Adolescent↗