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BOZKURT, SÜHEYLA

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BOZKURT

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SÜHEYLA

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    Acute megakaryoblastic leukemia mimicking small round cell tumor with novel t(1;5)(q21;p13)
    (BLACKWELL PUBLISHING, 2008) BOZKURT, SÜHEYLA; Bozkurt, Suheyla Uyar; Berrak, Su Gulsun; Tugtepe, Halil; Canpolat, Cengiz; Palanduz, Sukru; Tecimer, Tulay
    Acute megakaryoblastic leukemia is a relatively rare form of acute leukemia that has heterogeneous blast morphology and karyotypic abnormalities. An 8-month-old boy with a retroperitoneal mass was diagnosed as having acute megakaryoblastic leukemia that initially presented as small round cell tumor of childhood. Bone marrow aspiration showed syncytial groups of atypical medium sized cells with scant cytoplasm and fine nuclear chromatin. Retroperitoneal mass biopsy showed several lymph nodes with cohesive clusters of neoplastic cells that demonstrated expression of Factor VIII. Flow cytometric analysis of the second bone marrow aspiration showed CD 61 positivity. Karyotypic analysis of bone marrow cells showed a novel translocation, (1;5)(q21;p13).
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    Malignancy and lymphoid proliferation in primary immune deficiencies; hard to define, hard to treat
    (WILEY, 2020) KOÇ, AHMET; Kiykim, Ayca; Eker, Nursah; Surekli, Ozlem; Nain, Ercan; Kasap, Nurhan; Akturk, Hacer; Dogru, Omer; Canbolat, Aylin; Somer, Ayper; Koc, Ahmet; Tokuc, Gulnur; Bozkurt, Suheyla; Turkoz, Kemal; Karakoc-Aydiner, Elif; Ozen, Ahmet; Baris, Safa
    Background Regarding the difficulties in recognition and management of the malignancies in primary immune deficiencies (PIDs), we aimed to present the types, risk factors, treatment options, and prognosis of the cancers in this specific group. Methods Seventeen patients with PID who developed malignancies or malignant-like diseases were evaluated for demographics, clinical features, treatment, toxicity, and prognosis. Results The median age of malignancy was 12.2 years (range, 2.2-26). Lymphoma was the most frequent malignancy (n = 7), followed by adenocarcinoma (n = 3), squamous cell carcinoma (n = 2), cholangiocarcinoma (n = 1), Wilms tumor (n = 1), and acute myeloid leukemia (n = 1). Nonneoplastic lymphoproliferation mimicking lymphoma was observed in five patients. The total overall survival (OS) was 62.5% +/- 12.1%. The OS for lymphoma was 62.2% +/- 17.1% and found to be inferior to non-PID patients with lymphoma (P = 0.001). Conclusion In patients with PIDs, malignancy may occur and negatively affect the OS. The diagnosis can be challenging in the presence of nonneoplastic lymphoproliferative disease or bone marrow abnormalities. Awareness of susceptibility to malignant transformation and early diagnosis with multidisciplinary approach can save the patients' lives.
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    Effects of Stamm gastrostomy on gastric emptying rate in rats
    (KARGER, 2004) YEGEN, BERRAK; Tugtepe, H; Iskit, HS; Bozkurt, S; Kiyan, G; Yegen, BC; Dagli, TE
    Aim: Although frequency of gastroesophageal reflux (GER) increases after gastrostomy, the role of gastric emptying in GER has not been evaluated. In this study, we examined the effects of Stamm gastrostomy on gastric emptying rate in rats and whether Stamm gastrostomy induces GER or not. Methods: Sprague-Dawley rats were divided into three groups. Stamm gastrostomy was done in the first group (SG). Sham operation was carried out in group 2 and the 3rd group served as control. Gastric emptying was assessed using both liquid and solid meals in each group at postoperative 14th day. For solid meal emptying, after fasting of 16 h, the rats were fed for 3 h and gastric emptying rate was measured at the fifth hour. Methylcellulose was used for emptying of liquids and it was given after the animals were fasted for 16 h and gastric emptying rate was measured 30 min later. Histological evaluation for GER was performed in all groups. Results: GER was observed pathophysiologically in 5 of the 7 rats in SG group. Gastric emptying rates of liquid and solid meals were found to be similar in control, SG or sham groups. Conclusion: Surgical gastrostomy does not affect the gastric emptying of solid and liquid meals in rats. Other mechanisms should be considered in the development of GER observed following gastrostomy. Copyright (C) 2004 S. Karger AG, Basel.