Publications by authors named "Koliouskas D"

Background: Antifungal prophylaxis (AFP) is recommended in at-risk hematology-oncology patients. We evaluated the safety of AFP with voriconazole (VRC) in pediatric hematology/oncology patients.

Materials And Methods: A retrospective study of VRC AFP in children with malignancies hospitalized in all 7 Greek pediatric hematology/oncology centers during 2008 to 2012 was conducted.

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Unlabelled: Ewing's sarcoma (ES) is an uncommon aggressive bone malignancy that mainly affects children and adolescents. Mandible involvement is quite rare and usually represents metastasis from another skeletal site. Combined therapy including wide surgical resection and preoperative and postoperative chemotherapy has been demonstrated as the mainstay of therapeutic approach.

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Background: Transient hyperglycemia (TH) represents an acknowledged adverse event that occurs during treatment in children with acute lymphoblastic leukemia (ALL) and has recently been associated with an increased risk for developing metabolic disturbances in future life. Our aim was to estimate the incidence of TH and to identify risk factors, thus serving as markers for identifying candidates for prevention interventions.

Procedure: All patients treated with induction treatment for ALL in our department from January 2004 to April 2015 had their data retrieved from medical files and retrospectively analyzed.

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Background.: Emergence of extensively drug-resistant (XDR) bacteria has forced clinicians to use off-label antimicrobial agents such as tigecycline. We present our experience on salvage use of tigecycline for the treatment of infections caused by XDR Gram-negative bacteria in critically ill children and review published cases.

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Nephroblastomatosis (NB) has been considered as a precursor of Wilms tumor (WT). The natural history of NB seems to present significant variation as some lesions may regress spontaneously, while others may grow and expand or relapse and develop into WT later in childhood. Although, most investigators suggest adjutant chemotherapy, the effect and duration of treatment are not well established.

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Non-Hodgkin lymphoma (NHL) accounts for 10% of pediatric malignancies and is the third most common malignancy in childhood. We report a previous healthy 3-year-old boy with stage IV Burkitt lymphoma presenting with acute visual loss. In funduscopy his pupils were fixed at 6 mm in diameter without light perception.

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We present a polyclonal outbreak of vancomycin-resistant enterococci (VRE) colonization in a pediatric oncology department and the role of a bundle of actions. After the occurrence of VRE bloodstream infections in 2 patients, an active surveillance of VRE colonization was started. Enhanced infection control measures and closure of the department to new admissions for the first 3 months were implemented.

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Even though tuberculosis is considered rare in developed countries, its rising incidence, especially in high-risk populations, places intestinal tuberculosis in the differential diagnosis of patients with atypical abdominal symptoms or signs. We, herein, report the case of an immunocompetent woman, from a nonendemic area, who developed intestinal tuberculosis, emphasizing the diagnostic challenges caused due to nonspecific symptoms, inconclusive clinical, laboratory, and imaging findings, which could not rule in or rule out tuberculosis. Antituberculosis treatment was administered based on endoscopic findings and histological features of mucosal biopsies, which were indicative of intestinal tuberculosis, and the patient showed a marked clinical and laboratory improvement.

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Background: Children with haematological malignancies such as acute lymphoblastic leukaemia (ALL) may have alteration of bone mineral metabolism therefore increased risk for osteopenia and osteoporosis.

Patients And Methods: The purpose of this study was to examine the alterations of bone mineral metabolism in two groups of children (n=42) according to immunophenotyping (B-cell type, T-cell type) both quantitative (bone mineral density z-scores) and qualitative (serum osteocalcin - OC and carboxyl-terminal telopeptide of human type I collagen - ICTP) during diagnosis (T=0), after the intensified chemotherapy period (T=0.5) and the consolidation period (T=1).

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Atypical teratoid/rhabdoid tumor of the spine is a rare pediatric neoplasm with poor prognosis. We report a case of an atypical teratoid/rhabdoid tumor of the cervical spine in a 2-months-old infant. The patient presented with rapidly progressing tetraparesis and respiratory failure.

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The severe endothelial dysfunction in children with acute lymphoblastic leukemia (ALL) can result from the disease itself, from treatment, or from other conditions (e.g. sepsis).

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Background And Objective: Carcinoid tumors of the appendix are rare in childhood and usually have a benign clinical course. Their incidence in appendectomy specimens ranges from 0.1% to 0.

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4,4'-Methylenedianiline (MDA) is a chemical used in manufacturing and insulation processes and is a well-known hepatotoxin. We report the case of a 42-year-old construction-site worker who was accidentally exposed to large amounts of MDA and developed acute liver damage. The clinical course is described, with particular emphasis on the timely identification of the underlying cause and prompt management that led to an uneventful recovery.

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Neuroblastoma is the most common extracranial solid tumor in children. Survival rates have improved due to advances in treatment with aggressive chemotherapy and autologous bone marrow transplantation. Usual sites of recurrence include the site of primary tumor, residual gross disease, bone, bone narrow, liver, and lungs.

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Introduction: Epstein-Barr virus esophagitis in an immunocompetent host is a rare entity. It represents either primary infection or reactivation and is usually characterized by acute onset and extensive ulcerative involvement of the upper and middle third of the esophagus.

Case Presentation: A case of Epstein-Barr virus esophagitis in a 27-year-old woman with no immunosuppressive factors, and having gastrointestinal symptoms is reported here.

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Alveolar soft-part sarcoma (ASPS) is a rare form of soft tissue sarcoma and is most often seen in adolescents and young adults. Surgical excision of the primary tumor and pulmonary metastases has resulted in prolonged survival in some patients while the benefit of adjuvant chemotherapy and/or radiotherapy has been disputed. An 11- year-old boy with ASPS which presented with a markedly vascular tumor in the left thigh, and multiple bilateral pulmonary metastases 8 months after diagnosis is described.

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Zygomycosis is an invasive mycotic disease caused by fungi of the class Zygomycetes. Infections caused by zygomycetes, are known for their difficulty of diagnosis and treatment. Cunninghamella bertholletiae (Cb), is a saprobic fungus commonly found in the soil of temperate climates.

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Background: Monitoring time trends in the incidence of childhood leukaemias and lymphomas requires efficient and continuous data collecting systems. In countries without official cancer registries, such as Greece, ad hoc nationwide registration of incident childhood leukaemias and lymphomas could help elucidate the underlying aetiology and monitor socioeconomic differentials in health care delivery.

Methods: We registered all cases and produced age, gender, type and immunophenotype specific figures and overall crude and age adjusted annual incidence rates and secular trends for 863 leukaemia and 311 lymphoma incident cases diagnosed in children <15 years of age across Greece during 1996-2006, namely the first 11 years of the Nationwide Registry for Childhood Hematological Malignancies.

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In radiolabeled leukocyte imaging, Tc-99m HMPAO has a significantly higher selectivity for eosinophils than neutrophils, but this may be clinically meaningful in disorders with eosinophilic infiltration. We present the case of a 2-year-old boy with infection who also developed drug-induced eosinophilic lung disease, as established later by bronchoalveolar lavage and discontinuation of the responsible antistaphylococcal agent. In the investigation of sepsis, diffusely increased pulmonary accumulation of Tc-99m HMPAO labeled leukocytes was observed.

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