Person: TUROĞLU, HALİL TURGUT
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TUROĞLU
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HALİL TURGUT
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Publication Open Access Langerhans Hucreli Histiyositoz Tanili Hastada Soliter Kemik Lezyonunun Takibinde Kemik Sintigrafi ve SPECT/BT'nin Rolu(GALENOS YAYINCILIK, 2021-10-01) TUROĞLU, HALİL TURGUT; Kesim, Selin; Turoglu, Halil Turgut; Inanir, Sabahat; Ozguven, Salih; Erdil, Tanju YusufLangerhans' cell histiocytosis (LCH) is a rare disease observed in childhood characterized by the proliferation of Langerhans' cells resulting in focal or systemic manifestations (including the bones). Here, we present a pediatric case with a localized biopsy-proven LCH, who underwent progression from solitary to multifocal form detected on bone scintigraphy and single photon emission computerized tomography/computed tomography (SPECT/CT) performed within four months. Emphasizing on localized bone pain (predictive of osseous LCH) and local tenderness and swelling usually guides the nuclear physician to perform additional SPECT/CT with presumably an improvement of the diagnostic accuracy as demonstrated in our case.Publication Open Access Evaluation of Association Between Fluoro-D-Glucose Positron Emission Tomography Uptake with Right Ventricular Functions in Patients with Chronic Thromboembolic Pulmonary Hypertension(ELSEVIER SCIENCE INC, 2013-10) YILDIZELİ, BEDRETTİN; Sunbul, Murat; Kivrak, Tarik; Oguz, Mustafa; Ozguven, Salih; Gungor, Serkan; Dede, Fuat; Turoglu, Halil Turgut; Yildizeli, Bedrettin; Mutlu, BulentPublication Open Access Long-Term Results of Fixed High-Dose I-131 Treatment for Toxic Nodular Goiter: Higher Euthyroidism Rates in Geriatric Patients(GALENOS YAYINCILIK, 2015-10-05) DEDE, FUAT; Aktas, Gul Ege; Turoglu, Halil Turgut; Erdil, Tanju Yusuf; Inanir, Sabahat; Dede, FuatObjective: Geriatric patient population has special importance due to particular challenges. In addition to the increase in incidence of toxic nodular goiter (TNG) with age, it has a high incidence in the regions of low-medium iodine intake such as in our country. The aim of this study was to evaluate the overall outcome of high fixed dose radioiodine (RAI) therapy, and investigate the particular differences in the geriatric patient population. Methods: One hundred and three TNG patients treated with high dose I-131 (370-740 MBq) were retrospectively reviewed. The baseline characteristics; age, gender, scintigraphic patterns and thyroid function tests before and after treatment, as well as follow-up, duration of antithyroid drug (ATD) medication and achievement of euthyroid or hypothyroid state were evaluated. The patient population was divided into two groups as those=>65 years and those who were younger, in order to assess the effect of age. Results: Treatment success was 90% with single dose RAI therapy. Hyperthyroidism was treated in 7 +/- 7, 2 months after RAI administration. At the end of the first year, overall hypothyroidism rate was 30% and euthyroid state was achieved in 70% of patients. Age was found to be the only statistically significant variable effecting outcome. A higher ratio of euthyroidism was achieved in the geriatric patient population. Conclusion: High fixed dose I-131 treatment should be preferred in geriatric TNG patients in order to treat persistent hyperthyroidism rapidly. The result of this study suggests that high fixed dose RAI therapy is a successful modality in treatni g TNG, and high rates of euthyroidism can be achieved in geriatric patients.Publication Open Access Isolated scapular lesion of langerhans cell histiocytosis detected by (18)F-FDG PET/CT(2022-10-19) TUROĞLU, HALİL TURGUT; ÖZGÜVEN, SALİH; Filizoğlu N., Özgüven S., Türköz H. K. , Öneş T., Turoğlu H. T. , Erdil T. Y.Langerhans cell histiocytosis (LCH) is a rare disease that occurs mainly in pediatric patients and most adult LCH is considered a part of multisystem or multifocal disease. Only 7.3% of cases present as unifocal bone lesion. Herein, we present a case of an isolated scapular lesion of LCH in a 48-year-old manPublication Open Access False Positive FDG PET/CT Resulting from Fibrous Dysplasia of the Bone in the Work-Up of a Patient with Bladder Cancer: Case Report and Review of the Literature(KOWSAR PUBL, 2012-12-27) DANE, FAYSAL; Aras, Mustafa; Ones, Tunc; Dane, Faysal; Nosheri, Omid; Inanir, Sabahat; Erdil, Tanju Yusuf; Turoglu, Halil TurgutFibrous dysplasia of the bone (FDB) is a common, genetic, developmental disorder with a benign course. FDB can be seen anywhere throughout the skeleton. It is usually asymptomatic and found incidentally on imaging studies that are performed for other purposes. Although whole body 18 F-flourodeoxyglucose PET/CT (FDG PET/CT) is widely used in tumor imaging, infections and benign pathologies like FDB may cause false positive results. Herein we report the case of a 48-year-old FDB patient with transitional cell carcinoma of the urinary bladder. Restaging FDG PET/CT showed multiple mild to moderate hypermetabolic bone lesions which were initially misinterpreted as bone metastases. In this case report, we aimed to guide physicians in evaluating bone lesions in cancer patients with FDB in the light of the literature.Publication Open Access Mickey Mouse Sign on Bone Scan in the Monostotic Form of Paget's Disease Mimicking Osseous Metastasis(GALENOS YAYINCILIK, 2020-10-01) TUROĞLU, HALİL TURGUT; Kesim, Selin; Turoglu, Halil Turgut; Ozguven, Salih; Ones, Tunc; Erdil, Tanju YusufPaget's disease is a chronic benign bone disease characterized by excessive and abnormal bone remodeling. Monostotic Paget's disease accounts for only 20% of the cases, and the monostotic form involving the vertebra with the Mickey Mouse sign is very rare. Herein, we report a case of suspected bony metastasis in the second lumbar vertebra that was diagnosed as Paget's disease because of the Mickey Mouse sign on bone scintigraphy, and the diagnosis was confirmed by biopsy. Therefore, bone scintigraphy may provide a positive contribution to the diagnosis, and may help to avoid unnecessary biopsy in cases with specific signs and patterns.Publication Open Access Orlistat accelerates gastric emptying and attenuates GIP release in healthy subjects(AMER PHYSIOLOGICAL SOC, 2009-03) HAKLAR, GONCAGÜL; Enc, Feruze Yilmaz; Oenes, Tunc; Akin, H. Levent; Dede, Fuat; Turoglu, H. Turgut; Uelfer, Goerzde; Bekiroglu, Nural; Haklar, Goncaguel; Rehfeld, Jens F.; Holst, Jens J.; Ulusoy, Nefise B.; Imeryuez, NeseEnc, FY, Ones,T, Akin HL, Dede F, Turoglu HT, Ulfer G, Bekiroglu N, Haklar G, Rehfeld JF, Holst JJ, Ulusoy NB, Imeryuz N. Orlistat accelerates gastric emptying and attenuates GIP release in healthy subjects. Am J Physiol Gastrointest Liver Physiol 296: G482-G489, 2009. First published December 24, 2008; doi:10.1152/ajpgi.90209.2008.-Orlistat, an inhibitor of digestive lipases, is widely used for the treatment of obesity. Previous reports on the effect of orally ingested orlistat together with a meal on gastric emptying and secretion of gut peptides that modulate postprandial responses are controversial. We investigated the effect of ingested orlistat on gastric emptying and plasma responses of gut peptides in response to a solid mixed meal with a moderate energy load. In healthy subjects, gastric emptying was determined using scintigraphy and studies were performed without and with 120 mg of orlistat in pellet form in random order. Orlistat shortened t lag and t half and decreased the area under the gastric emptying curve. Orlistat significantly attenuated the secretion of glucose-dependent insulinotropic polypeptide (GIP) but did not alter the plasma responses of cholecystokinin (CCK), glucagon-like peptide-1 (GLP-1), pancreatic polypeptide (PP), and insulin. There was no peptide YY (PYY) response. Area under the curve of gastric emptying was positively correlated with integrated secretion of GIP (r = 0.786) in orlistat and was negatively correlated with integrated plasma response of GLP-1 (r = -0.75) in control experiments, implying that inhibition of fat absorption modifies determinants of gastric emptying of a meal. Orlistat administered similar to its use in obesity treatment accelerates gastric emptying of a solid mixed meal with a moderate energy load and profoundly attenuates release of GIP without appreciably altering plasma responses of CCK, GLP-1, and PP. Since GIP is being implemented in the development of obesity, its role in weight control attained by orlistat awaits further investigation.Publication Open Access Şiddetli kaudal regresyon sendromu olan pediatrik bir hastada tek foton emisyonlu bilgisayarlı tomografi/bilgisayarlı tomografi ile hibrid renal kortikal görüntüleme(2022-02-01) KESİM, SELİN; TUROĞLU, HALİL TURGUT; ÖZGÜVEN, SALİH; ERDİL, TANJU YUSUF; ÖNEŞ, TUNÇ; KESİM S., TUROĞLU H. T., ÖZGÜVEN S., ÖNEŞ T., ERDİL T. Y.© 2022 by Turkish Society of Nuclear Medicine Molecular Imaging and Radionuclide Therapy published by Galenos Yayınevi.Caudal regression syndrome (CRS) or sacral agenesis is a rarely seen malformation with a varying degree of structural abnormalities, including multiorgan system dysfunctions, reported with higher incidence among children of mothers with diabetes, as in this case. Spinal anomalies can range from coccyx hemiagenesis to the total absence of lower lumbar vertebrae and sacrum in most severe cases. Herein, we have presented a 9-year-old patient with CRS who had renal failure. Technetium-99m dimercaptosuccinic acid renal scintigraphy revealed bilaterally non-functioning kidneys with no renal cortical uptake. Renal anomalies in CRS with vertebral, anorectal, cardiac, trachea-esophageal, renal, and limb anomalies association include one-sided renal agenesis, multicystic dysplastic kidneys, and ureter duplications.Publication Open Access 2-(fluorine-18)-fluoro-2-deoxy-D-glucose positron emission tomography/computed tomography after breast conserving surgery: Correlation with molecular markers of breast cancer(MEDKNOW PUBLICATIONS & MEDIA PVT LTD, 2016) TUROĞLU, HALİL TURGUT; Ozguven, Salih; Inanir, Sabahat; Turoglu, Halil Turgut; Erdil, Tanju Yusuf; Ugurlu, Mustafa Umit; Gulluoglu, BahadirAim: To investigate the role of 2-(fluorine-18)-fluoro-2-deoxy-D-glucose (F-18-FDG) positron emission tomography/computed tomography (PET/CT) early after breast-conserving surgery (BCS) in patients with breast cancer (BC) and whether we can determine which molecular biomarkers of breast carcinoma put the patients at risk. Materials and Methods: This retrospective study involved 88 patients with histologically proven T1 or T2 BC, who were treated with BCS and underwent F-18-FDG PET/CT study. The correlation between biological markers (estrogen receptor, progesterone receptor, human epidermal growth factor receptor 2 [HER2], and Ki-67) of the primary tumor and F-18-FDG PET/CT findings was analyzed. Results: F-18-FDG PET/CT demonstrated the presence of BC disease (locoregional disease [LRD], distant metastases, or contralateral BC) in 26 of 88 patients (29.5%). Regarding immunohistochemical profiles, BC expressing high levels of Ki-67 were associated with an increased percentage of LRD, which was the major recurrence pattern on F-18-FDG PET/CT. Although the BC disease was observed more commonly in patients with HER2 positivity compared to those of HER2 negative, the difference did not reach statistical significance. The patients with T2 tumor or a higher histopathological grade had a higher percentage of BC disease. Conclusions: This study demonstrated that patients with early stage BC treated with BCS have a remarkable risk of the presence of BC even early after surgery, and there was a clinically important relationship between F-18-FDG PET/CT findings and biological markers of BC. These findings suggest that high-risk molecular biomarkers (Ki-67, HER2) can be taken into account in the decision-making the process for both preoperative imaging and planning of the surgical approach.Publication Open Access The evaluation of DLCO changes in patients with relatively higher lung shunt fractions receiving TARE(2022-11-27) TUROĞLU, HALİL TURGUT; ÖZGÜVEN, SALİH; Engur C. O. , Ozguven S., Soydemir E., Eryuksel E., Sen F., Turoglu H. T. , Cimsit C., Erdil T. Y. , Ones T.Objective Transarterial radioembolization (TARE) with Yttrium-90 (90Y) labeled microspheres is an efective locoregional treatment option for patients with primary and metastatic liver cancer. However, TARE is also associated with radiationinduced lung injury due to hepatopulmonary shunting. If a large proportion of the injected radionuclide microspheres (more than 15%) is shunted, a rare but lethal complication may develop: radiation-induced pneumonitis (RP). Difusion capacity of the lungs for carbon monoxide (DLCO) is a valuable test to assess lung function and a decrease in DLCO may indicate an impairment in gas exchange caused by the lung injury. Some previous researches have been reported the most consistent changes in pulmonary function tests after external beam radiotherapy are recorded with DLCO. This study aimed to examine the changes in DLCO after TARE with glass microspheres in newly treated and retreated patients with relatively higher lung shunt fractions. Methods We prospectively analyzed forty consecutive patients with liver malignancies who underwent lobar or superselective TARE with 90Y glass microspheres. DLCO tests were performed at baseline and on days 15, 30, and 60 after the treatment. All patients were followed up clinically and radiologically for the development of RP. Results A statistically significant decrease was found in the DLCO after the first treatment (81.4 ± 13.66 vs. 75.25±13.22, p=0.003). The frequency of the patients with impaired DLCO at baseline was signifcantly increased after the frst treatment (37.5 vs 57.5% p<0.05). In the retreated group (n=8), neither the DLCO (71.5±10.82 vs. 67.50±11.24, p=0.115) nor the frequency of patients with impaired DLCO (25 vs 25%, p=1) did not signifcantly change. Also, the change in DLCO values did not signifcantly correlate with lung shunt fraction, administered radiation dose, and absorbed lung dose after the frst and second treatments (p>0.05 for all). None of the patients developed RP. Conclusion Our study showed that a signifcant reduction in DLCO after TARE may occur in patients with relatively higher lung shunt fractions. Further studies with larger sample sizes are needed to better investigate the changes in DLCO in patients with high lung shunt fractions.