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F Raafat

Publications and source records attributed to F Raafat.

105 records · Page 6Linked to original sources
PubMedDate not supplied

Pediatric oncology and hematology in Birmingham, England.

The hematology and oncology service at Birmingham Children's Hospital was established in the late 1960s and now is one of the largest in the United Kingdom. It provides comprehensive care for the entire range of childhood malignancies, coagulation disorders, and hemoglobinopathies and other hematological disorders, and undertakes bone marrow transplant and megatherapy/peripheral blood stem cell procedures. Research includes clinical trials of treatments of childhood cancers; molecular biology studies on leukemia, Hodgkin's disease, neuroblastoma, and sarconas; childhood cancer epidemiology, and geographical and racial incidence; and treatment of hemophilia and molecular investigation of coagulation disorders. These activities involve collaboration with local, national, and international research groups.

Child↗
PubMedDate not supplied

Spectrum of peritoneal mesothelioma in childhood: clinical and histopathologic features, including DNA cytometry.

Different types of peritoneal mesothelioma (PM) occur in children and adults. All these share certain histopathologic features but differ in other aspects, such as age of occurrence, site and sex predominance, etiology, and biologic behavior. The article describes four patients, two with cystic PM (one of whom had multiple recurrences) and two with malignant PM (one of whom had pleural metastases). These cases illustrate the variable behavior of this tumor in childhood and highlight the difficulties encountered in diagnosis and treatment. Three different groups of mesothelioma are recognized: a classic, asbestos-related, malignant mesothelioma of adults, typically occurring in the pleural cavity; a multicystic mesothelioma, predominantly affecting the pelvic peritoneum of young women and associated with a good prognosis; and mesotheliomas in children, which are not associated with asbestos exposure and have an unpredictable biologic behavior requiring individual treatment strategies. In the patients studied, DNA index measured by flow cytometry showed a difference between the cystic (aneuploid) and malignant (diploid) tumors. The proliferative rate (S phase) of the tumor was low in all four cases.

Adolescent↗
PubMedDate not supplied

Paraganglioma of the vagina: the first report of a rare tumor in a child.

Paraganglioma (extra-adrenal pheochromocytoma) is a rare tumor, particularly in childhood. Those in the female genital tract are exceptionally rare, with only 9 cases reported in detail since 1926. All were seen in adults and only two arose in the vagina. This study examined the incidence of this tumor in the childhood population of the West Midlands region of the United Kingdom since 1957 and found 4 cases: 2 abdominal, 1 para-aortic, and 1 carotid body. A recent additional case is reported in the vagina of a child aged 11 years, who presented with heavy vaginal bleeding in the absence of hypertension. Initial diagnosis suggested rhabdomyosarcoma and near complete excision was carried out. Since this is the first such case to be described in a child, the outcome can only be assumed. Although histopathological examination suggested the benign nature of the tumor, implying that surgical excision was sufficient treatment, close follow-up is recommended.

Adolescent↗
PubMedDate not supplied

Zellweger syndrome: a histochemical diagnosis of two cases.

Until 17 years ago the diagnosis of the cerebrohepatorenal Zellweger syndrome (ZS) rested largely on clinical grounds confirmed by pathologic findings at autopsy. The observation that peroxisomes are not detectable morphologically or histochemically in liver or kidney of patients with this syndrome gave histopathologists the opportunity to make the diagnosis of this complex syndrome at biopsy. Catalase reaction of the peroxisomes can be used as a rapid and accurate method to differentiate between ZS and other clinical conditions in which the peroxisomes are present in normal or reduced number. We describe two patients in whom the diagnosis of ZS was made by the absence of histochemical staining for catalase in a liver biopsy. The findings were subsequently confirmed using standard biochemical tests.

Biopsy, Needle↗
PubMedDate not supplied

Recurrent hemangiopericytoma of the chest wall: report of a case in a 5-year-old boy.

Hemangiopericytoma in infants and children is usually benign. A case of recurrent hemangiopericytoma of the mediastinum in a 5-year-old boy is reported. The tumor recurred twice because of incomplete excision in the first instance. Immunohistochemistry of this enigmatic tumor is reviewed and ultrastructural features are described. The importance of total initial excision of the tumor and a prolonged follow-up is highlighted.

Child, Preschool↗
PubMedDate not supplied

Metachronous Wilms tumor associated with pulmonary embolism: how can we detect these cases early? A case report and literature review.

A 4-year-old girl developed right metachronous Wilms tumor 2 years after completing treatment for a left-sided stage I Wilms tumor. The original treatment included 7 weeks of chemotherapy, delayed nephrectomy, and another 3 weeks of chemotherapy. The metachronous tumor on the right side extended into the inferior vena cava and right atrium. She developed pulmonary embolism as a result. She received chemotherapy and developed liquifaction of the tumor and toxic shock. She also had surgery. The patient is alive 3 years after the original diagnosis and 10 months after the relapse. The authors report this unusual case and discuss whether these cases can be identified early.

Antineoplastic Combined Chemotherapy Protocols↗
PubMedDate not supplied

Infantile colitis: a manifestation of intestinal Behcet's syndrome.

A brother and sister of first cousin Pakistani parents presented with recurrent mouth ulcers and chronic diarrhoea in the neonatal period. Diarrhoea persisted in spite of treatment with oral prednisolone and sulphasalazine. Both children required subtotal colectomy with ileostomy. Histopathology of the resected colons was virtually identical and showed multiple deep "flask"-shaped ulcers, often penetrating to the serosa, in the presence of chronic inflammation, but without any of the characteristic histological features of Crohn's disease. The appearance closely resembled the colitis of Beh,cet's syndrome. Both children (aged 6 and 3.5 years, respectively) have continued to have recurrent perianal disease with intermittent bloody diarrhoea since the operation. Apart from the initial symptoms of oral aphthous ulcerations in both children, no other major criteria have developed so far. Intestinal Behçet's syndrome should be considered in the differential diagnosis of chronic inflammatory bowel disease in childhood.

Behcet Syndrome↗
PubMedDate not supplied

Analysis of ploidy and proliferative activity in childhood non-Hodgkin's lymphoma (NHL) and Hodgkin's disease (HD).

We have performed DNA analysis by means of fluorescence-activated cell cytometry on paraffin-embedded tissue from the diagnostic biopsy specimens in 40 cases of non-Hodgkin's lymphoma (NHL) and 25 of Hodgkin's disease (HD) and from 50 normal tonsils as controls. For HD cases, aneuploidy was found in 7 of 25 (28%), a higher proportion than in two previous studies of mainly adult patients. Diploid tumors showed S-phase fractions (SPFs) similar to those of controls. In the NHL cases aneuploidy was found in 12 of 40 (30%) with no significant association with site, stage, histopathology, immunophenotype, or prognosis. SPFs were highest in abdominal and chest primary sites but were not related to stage. Burkitt's lymphomas had the highest SPFs relative to lymphoblastic (P < .01) and centroblastic lymphomas (P < .05). Significantly higher SPFs were found in B cell than in T cell tumors (P < .001). There was considerable heterogeneity for SPFs within each NHL subgroup. Survival was worse at 5 years for those with high SPFs compared with those with normal SPFs (P = .04). These results suggest that tumor DNA analysis may be useful in the evaluation of children with NHL. Larger studies are needed to define its role as an independent prognostic variable.

Aneuploidy↗