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Agaoglu F, Iribas A, Ozkurt S, Basaran M, Darendeliler E, Dizdar Y, Tunc M, Ozcan F. Bladder Preservation Therapy for Muscle Invasive Bladder Cancer. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bilgin Doğru E, Dizdar Y, Akşit E, Ural F, Şanlı Ö, Yasasever V. EMMPRIN and ADAM12 in prostate cancer: preliminary results of a prospective study. Tumour Biol 2014; 35:11647-53. [PMID: 25139103 DOI: 10.1007/s13277-014-2514-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 08/14/2014] [Indexed: 01/13/2023] Open
Abstract
Extracellular metalloproteinase inducer (EMMPRIN) and a disintegrin and metalloproteinase (ADAM12) play a major role in cancer invasion and metastasis owing to the fact that they are directly related to the cell microenvironment and extracellular matrix (ECM) degradation. The aim of this study was to search for an answer to the question "whether the determination of EMMPRIN and ADAM12 values especially in urine may be helpful for the early diagnosis of prostate cancer without employing invasive methods" and also to check whether they may be useful for the determination of the patients with high metastasis risk. Peripheral blood and urine from 66 prostate cancer patients (40 local, 20 locally advanced, 6 metastatic) and 14 healthy controls were evaluated by enzyme-linked immunosorbent assay (ELISA) method. Serum EMMPRIN and ADAM12 values of the patients were seen to be statistically higher than the serum EMMPRIN and ADAM12 values of the healthy controls (p=0.01 and p=0.001, respectively). The urine ADAM12 levels were significantly higher in patients (p=0.013). No significant relationships were found between urine EMMPRIN values of the patients and the healthy controls (p>0.05). Positive correlation between urine EMMPRIN-urine ADAM12 tests was found in total patients group (r=0.683, p=0.001). Our preliminary results revealed that serum EMMPRIN and ADAM12 values and urine ADAM12 values may be useful markers in prostate cancer therapy. Due to the high correlation between these two tests, we are of the opinion that the use of urine ADAM12 in clinic may be sufficient and favorable together with prostate-specific antigen (PSA) for treatment.
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Affiliation(s)
- Elif Bilgin Doğru
- Basic Oncology Department, Institute of Oncology, University of Istanbul, 34093, Istanbul, Turkey,
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Bilgin E, Dizdar Y, Serilmez M, Soydinc HO, Yasasever CT, Duranyildiz D, Yasasever V. For Which Cancer Types can Neuron-Specific Enolase be Clinically Helpful in Turkish Patients? Asian Pac J Cancer Prev 2013; 14:2541-4. [DOI: 10.7314/apjcp.2013.14.4.2541] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Fayda M, Kebudi R, Dizdar Y, Gorgun O, Gun F, Aksu G, Ayan I. Spontaneous pneumothorax in children with osteosarcoma: report of three cases and review of the literature. Acta Chir Belg 2012; 112:378-81. [PMID: 23175928 DOI: 10.1080/00015458.2012.11680856] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Spontaneous pneumothorax is a rare manifestation of primary lung cancer or metastasis. It is estimated that < 1% of all cases of spontaneous pneumothorax are tumor-associated and metastatic osteogenic or soft-tissue sarcomas are associated most commonly with pneumothorax especially in the setting of cytotoxic chemotherapy or radiotherapy. In this article, we report three pediatric cases with osteosarcoma that developed spontaneous pneumothorax during chemotherapy with a review of the literature. Two of them had lung metastasis at the time of the detection of pneumothorax and the remaining patient was found to have a bronchopleural fistula. SPx is an emergency situation and early diagnosis and management can improve prognosis and quality of life of the patient however the optimal management has yet to be determined.
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Affiliation(s)
- M. Fayda
- Department of Radiation Oncology, Oncology Institute, Istanbul University
| | - R. Kebudi
- Department of Pediatric Oncology, Oncology Institute, Istanbul University
| | - Y. Dizdar
- Department of Radiation Oncology, Oncology Institute, Istanbul University
| | - O. Gorgun
- Department of Pediatric Oncology, Oncology Institute, Istanbul University
| | - F. Gun
- Department of Pediatric Surgery, Faculty of Medicine, Istanbul University
| | - G. Aksu
- Department of Radiation Oncology, Faculty of Medicine, Kocaeli University
| | - I. Ayan
- Department of Pediatric Oncology, Oncology Institute, Istanbul University
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Abstract
OBJECTIVE Oxidative stress and imbalance in the oxidant/antioxidant system have a critical role in carcinogenesis by affecting necrosis and apoptosis. The aim of this study is to evaluate the oxidant/antioxidant status and cell death modes in patients with oral squamous cell carcinoma (OSCC). MATERIALS AND METHODS Twenty-nine patients with OSCC and 29 control subjects were included in the study. The levels of malondialdehyde (MDA), advanced oxidation protein products (AOPP) and ferric reducing antioxidant power (FRAP) were determined in plasma samples of all subjects. The necrotic and apoptotic cell death modes were evaluated with M65 ELISA and M30 ELISA, respectively. RESULTS MDA and AOPP values as oxidative stress markers were higher in patients with OSCC than in the control group. FRAP values evaluating plasma antioxidant status increased in OSCC patients. M65 and M30 levels indicating necrosis and apoptosis were significantly higher in OSCC patients compared to controls. There were significant correlations between MDA, AOPP and FRAP; M65 and M30 values. CONCLUSIONS The elevated levels of oxidative stress markers together with the increase of antioxidant capacity and the presence of a strong correlation between MDA, AOPP and FRAP suggest an activation of antioxidant defense against accentuated oxidative stress determined in OSCC. Enhanced oxidation of lipids and proteins may cause decomposition of cell membranes with subsequent leakage of cytoskeletal cytokeratins as CK18 and caspase-cleaved CK18 (evaluated as M65 and M30, respectively) in the circulation, suggesting that both cell death modes are affected in OSCC.
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Affiliation(s)
- Oya Barut
- Oral and Maxillofacial Radiology Department, Faculty of Dentistry, Istanbul University, Istanbul, Turkey.
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Zaghloul M, Ahmed S, Eldebaway E, Mousa A, Amin A, Elkhateeb N, Sabry M, Ogiwara H, Morota N, Sufit A, Donson A, Birks D, Patel P, Foreman N, Handler M, Massimino M, Biassoni V, Gandola L, Schiavello E, Pecori E, Potepan P, Bach F, Janssens GO, Jansen MH, Lauwers SJ, Nowak PJ, Oldenburger FR, Bouffet E, Saran F, van Ulzen KK, van Lindert EJ, Schieving JH, Boterberg T, Kaspers GJ, Span PN, Kaanders JH, Gidding CE, Hargrave D, Bailey S, Howman A, Pizer B, Harris D, Jones D, Kearns P, Picton S, Saran F, Wheatley K, Gibson M, Glaser A, Connolly D, Hargrave D, Kawamura A, Nagashima T, Yamamoto K, Sakata J, Lober R, Freret M, Fisher P, Edwards M, Yeom K, Monje M, Jansen M, Aliaga ES, Van Der Hoeven E, Van Vuurden D, Heymans M, Gidding C, De Bont E, Reddingius R, Peeters-Scholte C, van Meeteren AS, Gooskens R, Granzen B, Paardekoper G, Janssens G, Noske D, Barkhof F, Vandertop WP, Kaspers G, Saratsis A, Yadavilli S, Nazarian J, Monje M, Freret M, Mitra S, Mallick S, Kim J, Beachy P, Nobre L, Vasconcelos F, Lima F, Mattos D, Kuiven N, Lima G, Silveira J, Sevilha M, Lima MA, Ferman S, Leblond P, Lansiaux A, Rialland X, Gentet JC, Geoerger B, Frappaz D, Aerts I, Bernier-Chastagner V, Shah R, Zaky W, Grimm J, Bluml S, Wong K, Dhall G, Caretti V, Schellen P, Lagerweij T, Bugiani M, Navis A, Wesseling P, Vandertop WP, Noske DP, Kaspers G, Wurdinger T, Lee H, Ziegler D, Schroeder K, Huang E, Berlow N, Patel R, Becher O, Taylor I, Mao XG, Hutt M, Weingart M, Kahlert U, Maciacyk J, Nikkhah G, Eberhart C, Raabe E, Barton K, Misuraca K, Misuraca K, Becher O, Zhou Z, Rotman L, Ho S, Souweidane M, Hutt M, Lim KJ, Warren K, Chang H, Eberhart C, Raabe E, Lightner D, Haque S, Souweidane M, Khakoo Y, Dunkel I, Gilheeney S, Kramer K, Lyden D, Wolden S, Greenfield J, De Braganca K, Ting-Rong H, Muh-Li L, Kai-Ping C, Tai-Tong W, Hsin-Hung C, Kebudi R, Cakir FB, Agaoglu FY, Gorgun O, Dizdar Y, Ayan I, Darendeliler E, Zapotocky M, Churackova M, Malinova B, Kodet R, Kyncl M, Tichy M, Stary J, Sumerauer D, Minturn J, Shu HK, Fisher M, Patti R, Janss A, Allen J, Phillips P, Belasco J, Taylor K, Baudis M, von Beuren A, Fouladi M, Jones C. DIFFUSE INTRINSIC PONTINE GLIOMA (DIPG). Neuro Oncol 2012. [DOI: 10.1093/neuonc/nos098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kebudi R, Cakir B, Agaoglu FY, Darendeliler E, Gorgun O, Dagoglu N, Ayan I, Dizdar Y, Zulfikar B, Koc B. Diffuse pontine gliomas in children: Do changing strategies change results? J Clin Oncol 2012. [DOI: 10.1200/jco.2012.30.15_suppl.9567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
9567 Background: The prognosis of children with diffuse intrinsic pontine gliomas (DIPG) is dismal. Despite various studies undertaken to improve outcome, radiotherapy (RT) remains the standard treatment, which is mostly palliative. This study aims to evaluate characteristics and treatment outcome of children with DIPG in a single center. Methods: We retrospectively reviewed the demographic, clinical characteristics and treatment outcome of children with DIPG treated at Istanbul University, Oncology Institute from 1999 to 2011. We also evaluated the group that prospectively recieved RT with concurrent and adjuvant temozolamide after 2004. Results: 47 children (24 female, 23 male) with the median age of 7 years (6 months-16 years) were analyzed. The median duration of symptoms was 30 days (2-630 days). The frequent clinical findings were ataxia, strabismus and motor weakness. All patients received RT, 54-60 Gy to the tumor site. 12 recieved only RT. 35 had concomitant and/or adjuvant chemotherapy with RT. 8 recieved cisplatinum, 7 vincristine. Since 2004, 20 patients recieved the institutional protocol consisting of temozolomide (TMZ) (75 mg/m2/day) for 6 weeks concurrent with RT, followed by TMZ (200 mg/m2/day) for 5 days every 28 days for 12 cycles or until progression. There was no major side effect due to TMZ, thrombocytopenia being the most frequent, but managable side effect. The median overall survival after diagnosis was 13 months (3-132 mo.) for the whole group. The median overall survival in 20 patients that received RT and TMZ [ 17 months (3-132 months)], was significantly superior than that in 12 patients that recieved only RT [ 12 months (3-20 months)] ( (p=0.03). Nimotuzumab was given to 4 patients that progressed after RT and TMZ. There was no major side effect due to nimotuzumab. One was stable for 1 year with significant clinical improvement, the others were stable for 5, 2 and 2 months after nimotuzumab. Conclusions: In our series, the median survival was significantly superior in patients who received RT with concurrent and adjuvant temozolamide in comparison to patients that recieved RT alone. Nimotuzumab may be promising in some progressive patients, its role as upfront treatment needs further investigation.
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Affiliation(s)
- Rejin Kebudi
- Istanbul University, Cerrahpasa Medical Faculty and Oncology Institute, Istanbul, Turkey
| | - Betul Cakir
- Istanbul University, Oncology Institute, Istanbul, Turkey
| | | | | | - Omer Gorgun
- Istanbul University, Oncology Institute, Istanbul, Turkey
| | - Nergis Dagoglu
- Istanbul University, Oncology Institute, Istanbul, Turkey
| | - Inci Ayan
- Istanbul University, Oncology Institute, Istanbul, Turkey
| | - Yavuz Dizdar
- Istanbul University, Oncology Institute, Istanbul, Turkey
| | - Bulent Zulfikar
- Istanbul University, Cerrahpasa Medical Faculty and Oncology Institute, Istanbul, Turkey
| | - Basak Koc
- Bezmi Alem University, Istanbul, Turkey
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Kebudi R, Ayan I, Gorgun O, Agaoglu FY, Ozdemir GN, Dizdar Y, Zulfikar B, Darendeliler E. Second malignant tumors in childhood cancer survivors. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.9573] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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9
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Yaman Agaoglu F, Kovancilar M, Dizdar Y, Darendeliler E, Holdenrieder S, Dalay N, Gezer U. Investigation of miR-21, miR-141, and miR-221 in blood circulation of patients with prostate cancer. Tumour Biol 2011; 32:583-8. [PMID: 21274675 DOI: 10.1007/s13277-011-0154-9] [Citation(s) in RCA: 222] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2010] [Accepted: 01/10/2011] [Indexed: 12/31/2022] Open
Abstract
In addition to their potential as tissue-based markers for cancer classification and prognostication, the study of microRNAs (miRNAs) in blood circulation is also of interest. In the present study, we investigated the amounts of three cancer-related miRNAs, miR-21, -141, and -221 in blood plasma of prostate cancer (PCa) patients. A cohort of 51 patients with PCa was enrolled into the study, and miRNAs were measured in two subgroups, with localized/local advanced or metastatic PCa. A group of 20 healthy individuals served as the control group. miRNAs were quantified from the total RNA fraction using 200 μl plasma and the small RNA molecule RNU1A as a control for normalizing the miRNA amounts in circulation. We found similar levels of three miRNAs in healthy subjects with median values of 0.039, 0.033 and 0.04, respectively; (p = n.s.). In the patients, the miRNA levels were higher, with miR-21 being the highest (median, 1.51). The miR-221 levels were intermediate (median, 0.71) while the miR-141 displayed the lowest levels (median, 0.051). The differences between the control group and the patients were highly significant for the miR-21 (p < 0.001; area under the curve (AUC), 88%) and -221 (p < 0.001; AUC, 83%) but not for the miR-141 (p = 0.2). In patients diagnosed with metastatic PCa, levels of all three miRNAs were significantly higher than in patients with localized/local advanced disease where the difference for the miR-141 was most pronounced (p< 0.001; AUC, 75.5%). In conclusion, analysis of miR-21, -141, and -221 in blood of PCa patients reveals varying patterns of these molecules in clinical subgroups of PCa.
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Affiliation(s)
- Fulya Yaman Agaoglu
- Department of Radiation Oncology, Istanbul University Oncology Institute, 34390 Capa, Istanbul, Turkey
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Ayan I, Kebudi R, Ozger H, Yaman Agaoglu F, Gorgun O, Bilgic B, Eralp L, Dizdar Y, Darendeliler E. Childhood osteosarcoma: Evaluation of 94 cases. A single institution study. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.10040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
10040 Background: Osteosarcoma is the most frequent bone tumor in children and adolescents. The aim of this study is to evaluate the demographic characteristics, therapy, and long term outcome of children with osteosarcoma in a single institution. Methods: Between January 1990 and December 2006, 94 children (53 male, 41 female) with a median age of 13 (5–16) years and a histopathologic diagnosis of osteosarcoma were treated with an institutional chemotherapy regimen comprising of 6 courses (3 pre-, 3 postoperatively) of epirubicin (90 mg/m2), cisplatin(100 mg/m2), and ifosfamide(2 g/m2 × 3 days) every 3 weeks. Results: The median follow-up time was 36 (2–219) months. 68 patients were alive at the time of analysis. 26 patients died; 20 of disease, 5 of toxicity, and 1 of second malignancy (acute myeloid leukemia). 90% of the patients had a limb salvage. 5 and 10 year OS for all patients were 64.7 % ( [95 % CI] 74.8–52.94 %) and 62.2 % (95 % CI 74.6–49.9 %), respectively. 5 and 10 year EFS for all patients was 51.8 % (95% CI 40.2–63.4 %). 5 and 10 year OS for nonmetastatic patients were 78.3 % (95% CI 66.9–89.7 %) and 75.1 %(95% CI 62.6–87.6), vs. 13.5 % 5 year OS for metastatic patients(95% CI 0–30.8 %) (p< 0.001). 5 and 10 year EFS for nonmetastatic patients was superior to those with metastatic disease [62.4 % (95% CI 49.9–79.9 %) vs. 6.9 % (95% CI 0–19.9 %)) (p<0.001). A total of 33 patients experienced relapse and/or progression at a median of 9 months (range 0–40 months). 10 year OS for 18 patients (11 metastatic at diagnosis) who progressed during preoperative chemotherapy was 13 % vs. 75 % for those who didnot have progressive disease (p< 0.001). The rate of histologically good response to preoperative chemotherapy was 64.5 %. Histologic response (<90 percent necrosis vs ≥90 percent) significantly correlated with 5 year EFS (31 % vs 67.6 %, p=0.023) but not with OS (57.7 % vs 76.5 %, p=0.13). Conclusions: The presence of metastases at diagnosis was the most significant characteristic influencing outcome. Our results demonstrate that the combination of epirubicin, cisplatin, and ifosfamide is an active and reasonably well-tolerated regimen for childhood osteosarcoma. No significant financial relationships to disclose.
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Affiliation(s)
- I. Ayan
- Istanbul University, Istanbul, Turkey
| | - R. Kebudi
- Istanbul University, Istanbul, Turkey
| | - H. Ozger
- Istanbul University, Istanbul, Turkey
| | | | - O. Gorgun
- Istanbul University, Istanbul, Turkey
| | - B. Bilgic
- Istanbul University, Istanbul, Turkey
| | - L. Eralp
- Istanbul University, Istanbul, Turkey
| | - Y. Dizdar
- Istanbul University, Istanbul, Turkey
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Kebudi R, Darendeliler E, Ayan I, Gorgun O, Yaman Agaoglu F, Dizdar Y, Darendeliler F, Emiroglu H. Multimodality treatment on long-term outcome of intracranial germ cell tumors in children: A single institution study. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.10063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
10063 Background: Intracranial germ cell tumors (iGCT) constitute 1% of all malignant neoplasms in children. The aim of this study is to evaluate the demographic characteristics, therapy, and long term outcome of children with iGCT in a single institution. Methods: 16 children (9 female, 7 male) with a median age of 11 years (10 months-18 yrs) treated for iGCT between 1990 and 2008 were evaluated retrospectively. They were treated according to our institutional protocol. Patients > 13 years old with germinomas recieved radiotherapy alone (2520 cGy craniospinal/1980 cGy local boost), patients <13 yrs old recieved 2 courses of etoposide, cisplatinum followed with cranial radiotherapy. Nongerminoma patients recieved 3 courses of bleomycine, etoposide, cisplatinum followed by 3600 cGy craniospinal / 1980 cGy local boost RT. Results: Presenting clinical features were diabetes insipidus (7), raised intracranial pressure (12), visual changes-oculomotor palsies (6), hypopituitarism (4). 8 had germinomas and 8 nongeminomatous GCT. Ten were suprasellar and 6 pineal. AFP and BHCG were evaluated at diagnosis and during therapy both in serum and CSF. Three had seeding in the spinal axis in MRI. One had widespead systemic metastasis. Three had a total resection, 12 had a biopsy, 1 was clinically/radiologically diagnosed, 5 had a shunt. Two nongerminamatous iGCT patients died: 1 of widespread disease in the intensive care unit at diagnosis, the other with progressive disease 18 months after diagnosis. Fourteen patients are alive at a median follow-up of 12 years (1–17 years) from diagnosis. One that had motor and mental retardation before diagnosis needs special care. All others have a moderate/good quality of life. One is married and has a child. Six are at school (2 in university). Five are employed. The patients are also followed up in the endocrinology clinic. One is recieving growth hormone. Conclusions: Cisplatin based chemotherapy and radiotherapy is successful and well tolerated in children with iGCT. The possibility of an early clinical diagnosis based on MRI and tumor markers and the use of modern neurosurgical techniques increases the chance of cure, gives a chance to reduce acute morbidity and further decrease late effects. No significant financial relationships to disclose.
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Affiliation(s)
- R. Kebudi
- Istanbul University, Istanbul, Turkey
| | | | - I. Ayan
- Istanbul University, Istanbul, Turkey
| | - O. Gorgun
- Istanbul University, Istanbul, Turkey
| | | | - Y. Dizdar
- Istanbul University, Istanbul, Turkey
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Kadehci Z, Dagoglu N, Ucar A, Oflaz H, Dizdar Y, Altun M. Carotid vessel changes and risk factors in patients receiving radiotherapy for head and neck cancers. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)71404-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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13
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Ustuner Z, Basaran M, Dizdar Y, Agaoglu FY, Bilgic B, Sakar B, Basaran GA, Darendeliler E, Ozger H, Onat H, Bavbek S. Clinical outcome of rhabdomyosarcoma in adolescent and adult patients: single center experience from Turkey. TOHOKU J EXP MED 2007; 213:221-9. [PMID: 17984619 DOI: 10.1620/tjem.213.221] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Rhabdomyosarcoma (RMS) is rare disease in adults (age >or= 16 years). The data from randomized prospective trials are scarce; the clinical outcome of these patients seems poor with the currently available treatment strategies. In this study, we report a single institution's experience in the treatment of adult RMS. We reviewed the medical records of patients with RMS who were >or= 16 years and have been treated in our institution between 1988 and 2003 retrospectively. We analyzed the survival outcome of these patients and the prognostic impact of clinical/pathological factors on their survival. In total, 23 patients with RMS were identified. Median age was 26 years (range, 16-72 years). Majority of patients were male (n: 17, 73.9%), and had large tumors (>or= 5 cm, n: 13, 56.5%), localized disease (N0, M0, n: 12, 52.2%), and embryonal histology (n: 10, 43.5%). Median overall survival was 31.3 months, and the 3-year progression-free survival and overall survival rates were 19.9% and 34.94%, respectively. Patients with smaller tumors (< 5 cm) (p < 0.04), local disease (p < 0.01), and normal lactic dehydrogenase (LDH) level (p < 0.01) at the time of diagnosis were found to have better survival outcome. The tumor size, serum LDH level, and metastatic disease at the time of diagnosis are potential predictors of outcome in patients with adult RMS. Adult RMS is an aggressive disease with poor survival despite treatment. The data from prospective, randomized multicenter trials are necessary in order to improve the clinical outcome of adult RMS patients.
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Affiliation(s)
- Zeki Ustuner
- Department of Medical Oncology, Istanbul University Institute of Oncology, Istanbul, Turkey.
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14
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Ozger H, Eralp L, Toker B, Ağaoğlu F, Dizdar Y. [Evaluation of prognostic factors affecting recurrences and disease-free survival in extra-abdominal desmoid tumors]. Acta Orthop Traumatol Turc 2007; 41:291-294. [PMID: 18180559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
OBJECTIVES We investigated treatment results and the role of potential prognostic factors in patients treated by surgery with or without adjuvant radiotherapy for primary or recurrent extra-abdominal desmoid tumors. METHODS The study included 38 patients (23 females, 15 males; mean age 24 years; range 5 to 61 years) who underwent surgical treatment for extra-abdominal desmoid tumors. Of these, eight patients (21.1%) already had recurrences before treatment. Involvement was in the upper extremity in 12 cases (31.6%), in the lower extremity in 22 cases (57.9%), and in the axial region in four cases (10.5%). Twenty-two patients received adjuvant radiotherapy following surgical resection. Survival was analyzed by the Kaplan-Meier method. The mean follow-up period was 7.3 years (2.5 to 228 months). RESULTS Twenty patients (52.6%) developed recurrences after treatment. Of these, recurrences were already present in six patients, and adjuvant radiotherapy was administered to 11 patients (55%). Recurrences developed at the irradiated site in eight patients, and in other regions in three patients. The mean disease-free survival was 38+/-8 months, and eight-year disease-free survival was 35.7+/-8.5%. Disease-free survival did not differ significantly between patients receiving adjuvant radiotherapy (47.9+/-7.9 months) and those treated with surgery alone (37.9+/-12.4 months), and between patients who developed a recurrence at the resection site (12.1+/-4.7 months) or at a different site (24.3+/-1.0 months) (p>0.05). None of the potential prognostic factors including gender, age, localization, surgical margin, or adjuvant irradiation were found to affect disease-free survival. CONCLUSION In our series, no prognostic factor could be identified as having an association with the high recurrence rate.
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MESH Headings
- Adolescent
- Adult
- Axilla
- Child
- Child, Preschool
- Combined Modality Therapy
- Disease-Free Survival
- Extremities
- Female
- Fibromatosis, Aggressive/diagnostic imaging
- Fibromatosis, Aggressive/mortality
- Fibromatosis, Aggressive/pathology
- Fibromatosis, Aggressive/radiotherapy
- Fibromatosis, Aggressive/surgery
- Humans
- Male
- Middle Aged
- Neoplasm Recurrence, Local/diagnostic imaging
- Neoplasm Recurrence, Local/mortality
- Neoplasm Recurrence, Local/pathology
- Neoplasm Recurrence, Local/radiotherapy
- Neoplasm Recurrence, Local/surgery
- Prognosis
- Radiography
- Soft Tissue Neoplasms/diagnostic imaging
- Soft Tissue Neoplasms/mortality
- Soft Tissue Neoplasms/pathology
- Soft Tissue Neoplasms/radiotherapy
- Soft Tissue Neoplasms/surgery
- Turkey/epidemiology
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Affiliation(s)
- Harzem Ozger
- Istanbul University Istanbul Medical School, Department of Orthopaedics and Traumatology, Istanbul
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Ozger H, Eralp L, Atalar AC, Toker B, Ayan I, Kebudi R, Bağbek S, Başaran M, Ağaoğlu F, Dizdar Y, Bilgiç B. [Survival analysis and the effects of prognostic factors in patients treated for osteosarcoma]. Acta Orthop Traumatol Turc 2007; 41:211-9. [PMID: 17876121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
OBJECTIVES We evaluated long-term treatment results of patients with primary osteosarcoma and the effect of prognostic factors on overall survival and disease-free survival. METHODS Between 1995 and 2005, 180 patients (111 males, 69 females; mean age 21+/-10 years; range 7 to 64 years) were treated for primary osteosarcoma. Overall and disease-free survival rates were analyzed for 165 patients with high-grade osteosarcoma with the Kaplan-Meier method. The effects of potential prognostic factors were assessed, including age, gender, localization, tumor size, primary metastasis on presentation, the presence of pathologic fractures, necrosis rate, and infection. All the patients received chemotherapy before and after surgery. The mean follow-up period was 49.7 months (range 6 to 185) months. RESULTS Sixty-nine patients were below 16 years of age. The most frequent involvement was in the distal femur (47.2%), followed by the proximal tibia (25%). Sixteen patients presented with a pathologic fracture, and 12 patients with metastasis. The median tumor size was 10 cm. The overall five- and 10-year survival rates were 68% and 60%, and disease-free survival rates were 50% and 44%, respectively. Only the presence of a pathologic fracture and primary metastasis on presentation were found to affect prognosis. CONCLUSION The two conditions, primary metastasis and a pathologic fracture, found as the most important prognostic factors in our study are mainly associated with late presentation. As in every malignant disease, early admission would provide better survival rates.
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Affiliation(s)
- Harzem Ozger
- Istanbul Universitesi Istanbul Tip Fakültesi, Ortopedi ve Travmatoloji Anabilim Dali
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Kebudi R, Ayan I, Görgün O, Ağaoğlu FY, Dizdar Y, Darendeliler E. Hypertrophic osteoarthropathy and intrathoracic Hodgkin's disease in children. Leuk Res 2006; 30:899-902. [PMID: 16310851 DOI: 10.1016/j.leukres.2005.10.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2005] [Revised: 10/19/2005] [Accepted: 10/22/2005] [Indexed: 10/25/2022]
Abstract
BACKGROUND Hypertrophic osteoarthropathy (HOA) is a syndrome characterized by clubbing of the fingers and toes, periosteal new bone formation of the long bones and polyarthritis. CASE REPORT In this report, two children with intrathoracic Hodgkin's disease and HOA are presented. CONCLUSIONS Intrathoracic neoplasms are one of the major causes of HOA in adults; however HOA is rarely associated with intrathoracic malignancies in children. HOA associated with intrathoracic Hodgkin's disease is even more rare, but should be kept in mind.
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Affiliation(s)
- Rejin Kebudi
- Istanbul University, Oncology Institute, Division of Pediatric Oncology, Turkey.
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Kebudi R, Fayda M, Ayan I, Görgün Ö, Dizdar Y, Aksu G, Gün F. Spontaneous pneumothorax in children with osteosarcoma. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.9070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
9070 Background: Spontaneous pneumothorax (SPx) is an emergency situation and early diagnosis and management is very important. SPx may sometimes be seen as a complication of malignancy or its treatment. SPx have been reported in some osteosarcoma patients, mostly in adults. The incidence of SPx in children with osteosarcoma is not well documented. The aim of this paper is to investigate the incidence, treatment and outcome of children with osteosarcoma in a single institution and to review the literature. Methods: Files of all children with osteosarcoma diagnosed and treated in a single institute during September 1989 and December 2002 and followed up until September 2005 were investigated retrospectively for the development of SPx and its outcome. Results: Three of the 81 children (3.7%) developed pneumothorax during their follow-up. Two cases had lung metastases and one case had a broncho-pleural fistula but no metastatic foci at the time pneumotorax was detected. He subsequently developed lung metastasis. Retrospectively, it was suspected that the bronchopleural fistula might have been a manifestation of an undetected micrometastasis. The incidence of developing spontaneous pneumotorax in children with osteosarcoma was 3.7% (3/81) in this single institution survey. We have also reviewed the 45 osteosarcoma cases with pneumothorax in the literature. Including the three cases reported in this paper, 39 of the 48 (81%) were metastatic. Conclusions: Although spontaneous pneumothorax is a rare event in the cancer patient, it should be kept in mind if there is worsening of pulmonary symptoms or shoulder pain. SPx is encountered mostly in metastatic patients, although it may occur in non-metastatic cases. No significant financial relationships to disclose.
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Affiliation(s)
- R. Kebudi
- Istanbul University, Oncology Institute, Istanbul, Turkey; Istanbul Medical Faculty, Department of Pediatric Surgery, Istanbul, Turkey
| | - M. Fayda
- Istanbul University, Oncology Institute, Istanbul, Turkey; Istanbul Medical Faculty, Department of Pediatric Surgery, Istanbul, Turkey
| | - I. Ayan
- Istanbul University, Oncology Institute, Istanbul, Turkey; Istanbul Medical Faculty, Department of Pediatric Surgery, Istanbul, Turkey
| | - Ö. Görgün
- Istanbul University, Oncology Institute, Istanbul, Turkey; Istanbul Medical Faculty, Department of Pediatric Surgery, Istanbul, Turkey
| | - Y. Dizdar
- Istanbul University, Oncology Institute, Istanbul, Turkey; Istanbul Medical Faculty, Department of Pediatric Surgery, Istanbul, Turkey
| | - G. Aksu
- Istanbul University, Oncology Institute, Istanbul, Turkey; Istanbul Medical Faculty, Department of Pediatric Surgery, Istanbul, Turkey
| | - F. Gün
- Istanbul University, Oncology Institute, Istanbul, Turkey; Istanbul Medical Faculty, Department of Pediatric Surgery, Istanbul, Turkey
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18
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Abstract
BACKGROUND Ependymal tumors are classified as ependymoma (benign or low grade) versus anaplastic ependymoma (malignant or high grade). Ependymomas represent 5-10% of intracranial neoplasm in children. In this study, demographic data and the treatment results of pediatric patients with ependymal tumors, treated in a single institute, is reported. PATIENTS AND METHODS Between 1989 and 2001, 40 (22 M/18 F) previously untreated patients with a median age of 5.5 years (3 months-15 years), of histologically proven ependymal tumors (except ependymoblastomas) were referred to the Institute of Oncology, University of Istanbul. The localization was supratentorial in 18, infratentorial in 20, both supra and infratentorial in two patients. Histologic subgroups were 18 ependymomas (43.6%), and 22 anaplastic ependymomas (56.4%). Total tumor resection was performed in 20 patients (50%), subtotal in 18 patients (45%), and biopsy only in 2 patients (5%). Postoperative treatment consisted of regional (8 patients) or craniospinal (CSI) (9 patients) radiotherapy (RT) in patients with ependymoma; regional (7 patients) or CSI RT (14 patients) with chemotherapy (ChT) in patients with anaplastic ependymoma; ChT only (1 patient) in patients less than 3 years of age. The standard technique for posterior fossa irradiation was parallel-opposed lateral fields and total dose was 45-54 Gy. Between September 1989 and May 1991 patients received regimen A, which consisted of RT followed by eight-in-one ChT, given every 4 weeks for eight courses. Patients who were treated between June 1991 and July 1994, received regimen B, which included two courses of postoperative "VEC" (vincristine, etoposide, cisplatin) ChT, administered every 3 weeks, followed by RT applied with low dose concomitant cisplatin used as a radiosensitizer. Patients with objective response to postoperative "VEC" continued to have "VEC" after completion of RT for six more courses. From August 1994 on, patients received regimen C, consisting of RT and concomitant infusion of cisplatin followed by "VCPCU" (vincristine, cyclophosphamide, procarbazine, lomustine) administered every 4 weeks for eight courses. RESULTS A total of 40 patients were included in the outcome and survival data. The 5-year overall survival (OS) rate was 64.9%, and the 5-year progression-free survival rate was 50.8% for the whole series. Median time for progression or relapse was 24.3 months and there were 19 patients (43.6%) with relapse or progression. Non-metastatic patients (P = 0.0008, 5-year OS rate was 82% vs. 29%), and totally resected patients (P = 0.01, 5-year OS rate was 80% vs. 55%), and > or =3 years of age (P = 0.04, 5-year OS rate was 75% vs. 38%) had significantly better outcome. CONCLUSIONS The majority of complete responders were patients who had total tumor removal. Treatment failure occurred mainly within the first 2 years, and outcome was dismal for patients who relapsed or had progressive disease. The median age at diagnosis is 6 years in our patient group; younger children (less than 3 years old) have less favorable outcome. There was no significant difference in survival or progression-free survival between the two histologic subtypes.
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Affiliation(s)
- Fulya Yaman Agaoglu
- Department of Radiation Oncology, Istanbul University-Istanbul Medical Faculty, 34390 Capa Istanbul, Turkey.
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19
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Affiliation(s)
- Fulya Yaman Agaoglu
- Radiation Oncology Department, Istanbul University Institute of Oncology, Turkey.
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20
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Argon A, Basaran M, Yaman F, Dizdar Y, Sakar B, Camlica H, Bavbek SE, Ozger H, Darendeliler E, Onat H. Ewing's Sarcoma of the Axial System in Patients Older Than 15 Years: Dismal Prognosis Despite Intensive Multiagent Chemotherapy and Aggressive Local Treatment. Jpn J Clin Oncol 2004; 34:667-72. [PMID: 15613556 DOI: 10.1093/jjco/hyh122] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Older age and axial location of Ewing's sarcoma have been reported as unfavorable prognostic factors. METHODS The records of patients older than 15 years with the Ewing's family of tumors were reviewed retrospectively. After the induction chemotherapy consisting of alternating vincristine, adriablastin, cyclophosphamide (VAC) and etoposide, ifosfamide with mesna protection (IE), a local treatment modality was chosen based on tumor and patient characteristics. RESULTS Twenty-five patients with a median age of 19 years were evaluated. Median follow-up was 26 months (range 4-58). Seventeen patients (68%) had died. In univariate analysis, factors predictive of shorter survival were the patients presenting with metastatic disease, with the primary tumor located at the pelvis, those who never achieved complete response to chemotherapy and those who had chemotherapy for <12 months. Only a negative link with pelvic location was observed in multivariate analysis [risk ratio 7.5; 95% confidence interval (CI) 1.52-37.06; P = 0.0134]. Median progression-free survival (PFS) and overall survival (OS) were 10 months (95% CI 6.2-13.8) and 14 months (95% CI 9.3-18.7), respectively. Cumulative 2-year PFS and OS were 19.0% (95% CI, SD +/-8.4) and 32.7% (95% CI, SD +/-9.8), respectively. CONCLUSIONS The prognosis of patients with axial Ewing's sarcoma is dismal despite an intensive, multimodality approach including multiagent, alternating chemotherapy, surgery and/or radiotherapy. A more aggressive approach should be considered for this group of Ewing's sarcoma patients.
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Affiliation(s)
- Andac Argon
- Medical Oncology Department, Istanbul Medical Faculty, University of Istanbul, Istanbul, Turkey.
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21
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Agaoglu FY, Dizdar Y, Dogan O, Alatli C, Ayan I, Savci N, Tas S, Dalay N, Altun M. P53 overexpression in nasopharyngeal carcinoma. In Vivo 2004; 18:555-60. [PMID: 15523893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Nasopharyngeal carcinoma (NPC) is a characteristic tumor displaying epidemiological, genetic and regional distribution properties and is unique by its natural behavior and therapy. Investigation of the molecular and biological changes, gene amplifications and activations that occur during carcinogenesis and progression can provide new insight into the pathology of the disease and may add biological factors that can be used as new prognostic markers. The p53 tumor suppressor gene is the most frequently mutated gene in human cancer. Although point mutations in the p53 gene are observed in nasopharyngeal cancer, the mutation rate is lower than in other tumors. Immunohistochemical studies have shown significant p53 overexpression in NPC material. In this study, p53 protein immunoreactivity was investigated in paraffin sections of primary nasopharyngeal tumors and metastatic cervical lymph nodes and association with clinical and histopathological characteristics was evaluated. Ninety-seven paraffin sections from 81 patients with NPC treated from 1990 to 1996 were examined by immunohistochemistry and were correlated with clinical features and treatment outcome. Among a total of 97 samples, positive staining for p53 protein was observed in 83 (85.5%) samples while no staining was found in 14 (14.5%) cases. Immunoreactivity was observed in 62 (81.5%) of the primary nasopharyngeal biopsy specimens. The correlation between p53 expression and histological type, stage, age and sex distributions was tested. After statistical analysis according to Chi-square test and Yates' correction, no significant difference was demonstrated (p>0.05). There was no statistically significant correlation with p53 immunoreactivity and overall and disease-free survival. Although the association between NPC and p53 is not clear, our study confirms that p53 overexpression is present in a considerable subset of patients with NPC.
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Affiliation(s)
- Fulya Yaman Agaoglu
- Istanbul University, Istanbul Medical Faculty, Radiation Oncology Department, Istanbul, Turkey
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22
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Agaoglu FY, Dizdar Y, Basaran M, Bilgic B, Darendeliler E. Human immunodeficiency virus-negative tonsil Kaposi's sarcoma and Hodgkin's disease: case report and review of the literature. J BUON 2004; 9:321-4. [PMID: 17415835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Kaposi's sarcoma (KS) is a multicentric malignant neoplastic vascular disorder characterized by multiple violet-colored nodules of the skin. The coexistence of KS with other primary malignancies, especially of the lymphoreticular system, has been frequently noted. However, the association of Hodgkin's disease with KS is a rare occurrence. In this article we present the case of a 33-year-old man with human immunodeficiency virus (HIV)-negative KS of the tonsil, occurring in the radiotherapy field for Hodgkin's disease treated 20 years ago.
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Affiliation(s)
- F Y Agaoglu
- Istanbul University, Institute of Oncology, Department of Radiation Oncology, Istanbul Medical Faculty, Department of Pathology, Istanbul, Turkey
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23
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Affiliation(s)
- Aziz Yazar
- Institute of Oncology, Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey.
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24
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Ustuner Z, Basaran M, Kiris T, Bilgic B, Sencer S, Sakar B, Dizdar Y, Bavbek S, Onat H. Skull Base Plasmacytoma in a Patient with Light Chain Myeloma. Skull Base 2004; 13:167-171. [PMID: 15912174 PMCID: PMC1131846 DOI: 10.1055/s-2003-43327] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Skull base involvement of plasmacytoma is reported in a patient with light chain myeloma. A 39-year-old man was admitted after experiencing paresthesia on the left side of the face and left arm, intermittent diplopia, and hoarseness for 2 years. Cranial magnetic resonance imaging revealed a large midline mass extending from the middle and posterior skull base into the upper two cervical vertebrae. An extramedullary plasmacytoma associated with light chain multiple myeloma was diagnosed after biopsy of the mass and laboratory investigations. The imaging findings and clinical features associated with this rare site of extramedullary plasmacytoma involvement are reported.
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Affiliation(s)
- Zeki Ustuner
- Institute of Oncology, and Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey
| | - Mert Basaran
- Institute of Oncology, and Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey
| | - Talat Kiris
- Department of Neurosurgery, Istanbul University, Istanbul, Turkey
| | - Bilge Bilgic
- Department of Pathology, Istanbul University, Istanbul, Turkey
| | - Serra Sencer
- Department of Radiology, Istanbul University, Istanbul, Turkey
| | - Burak Sakar
- Institute of Oncology, and Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey
| | - Yavuz Dizdar
- Institute of Oncology, and Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey
| | - Sevil Bavbek
- Institute of Oncology, and Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey
| | - Haluk Onat
- Institute of Oncology, and Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey
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25
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Bilgic B, Ates LE, Demiryont M, Ozger H, Dizdar Y. Malignant peripheral nerve sheath tumors associated with neurofibromatosis type 1. Pathol Oncol Res 2003; 9:201-5. [PMID: 14530818 DOI: 10.1007/bf03033740] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2003] [Accepted: 09/05/2003] [Indexed: 10/20/2022]
Abstract
We report 4 cases of malignant peripheral nerve sheath tumors (MPNST) with neurofibromatosis type 1 (NF1). Mean age was 29.5. Two of them had a family history. Three of them were male. All of them had enlarging mass and pain in the background of neurofibromas. Locations were popliteal, thigh and forearm. The masses were greater than 5 cm in diameter in each case. In two cases the mass was showing continuity with a nerve. One patient had a nonossifying fibroma as well as a MPNST. Wide excision and radiotherapy were applied to three of the patients. One of them did not take any therapy after surgical resection. Two of the patients died of lung metastases after a mean period of 12.5 months. In a majority of NF1 patients MPNST emerges from a preexisting neurofibroma. The patients with NF1 are at greatest risk for developing sarcomas, so they should be followed closely.
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Affiliation(s)
- Bilge Bilgic
- Department of Pathology, Istanbul University, Istanbul Medicine Faculty, Capa, Istanbul, Turkey
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26
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Altun M, Demiral AN, Meral R, Kaytan E, Cosar R, Disci R, Dizdar Y. Prognostic significance of hemoglobin concentration in nasopharyngeal carcinoma: does treatment-induced anemia have negative effect? In Vivo 2003; 17:483-7. [PMID: 14598613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
PURPOSE To assess the value of hemoglobin concentration (HC) in predicting treatment outcomes in nasopharyngeal carcinoma (NPC) patients treated with chemotherapy (CT) and radiotherapy (RT). PATIENTS AND METHODS Ninety-eight NPC patients treated with three courses of platinum-based neoadjuvant CT (NCT) and conventional RT were grouped as having normal HC (> or = 12.0 g/dl in females and > or = 13 g/dl in males), having mild anemia (MA) (13.0 g/dl > Hb > or = 11 g/dl in males, 12.0 g/dl > Hb > or = 11 g/dl in females) and having severe anemia (SA) (Hb < 11 g/dl). Massive decrease in HC (MDHC) was defined as > or = 1.5 g/dl decline with NCT. Along with other known risk factors (sex, age, histopathology, T stage, N stage, bilateral neck involvement, cranial nerve involvement and total RT time), the prognostic value of SA and MDHC were evaluated by Cox-regression. RESULTS SA increased from 7 to 33% with NCT (p < 0.0001). Patients with SA had lower 5-year locoregional control (LRC) (49 vs. 73%, p = 0.03), disease-free survival (DFS) (42 vs. 68%, p = 0.01) and overall survival (OS) (43 vs. 69%, p = 0.01) rates than patients with normal HC or MA. The presence of MDHC worsened 5-year LRC (p = 0.002), DFS (p = 0.001) and OS (p = 0.02) rates. In multivariate analyses, MDHC and SA had pronounced effect on LRC and survival, respectively. CONCLUSION MDHC and SA adversely affect treatment outcome in NPC patients treated with CT and RT. This may favour concomitant scheduling of RT and CT over neoadjuvant setting. Correction of HC before RT can improve the efficacy of RT and should be further evaluated.
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Affiliation(s)
- Musa Altun
- Istanbul University, Oncology Institute, Department of Radiation Oncology, 34390 Capa, Istanbul, Turkey.
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Abstract
Administration of monosodium glutamate (MSG) to neonatal rats has been reported to destroy aspartatergic (ASPergic) and glutamatergic (GLUergic) neurons. Ageing has been shown to induce cell loss, a rather general CNS atrophy, and slowness in the CNS functions. On the other hand, it has been hypothesized that two of the main reasons for opiate dependence development are the blockade by opiates of the NMDA receptors and their associated upregulation and supersensitivity. Accordingly, the abstinence syndrome precipitating effect of naloxone (NL) has been assumed to be the consequences of the removal by NL of opiate from NMDA receptors without being able to prevent upregulated and supersensitive NMDA receptors from being stimulated stronger than normal. To investigate the role of the decrease in the number of NMDA receptors in the development of morphine (M) physical dependence, 4 g/kg MSG was SC injected into neonatal rats on days 2, 4, 6, 8 and 10 after birth. Their littermate controls SC received equimolar NaCl solution. Three or 14 months later, three pellets containing 75 mg base M were SC implanted into male rats treated neonatally with MSG or equimolar NaCl solution. Seventy-two hours after pellet implantation, all rats were injected with 2 mg/kg NL intraperitoneally. Some abstinence syndrome signs were counted or rated for 15 min immediately after NL injection and then statistically evaluated. The NL-precipitated abstinence syndrome was less intense in 3-month-old MSG-treated rats than in controls, most probably due to the decrease in the number of NMDA receptors in MSG-treated rats.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- H Koyuncuoğlu
- Istanbul Medical Faculty, Department of Pharmacology, Capa, Turkey
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28
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Abstract
It has previously been reported that the noncompetitive NMDA receptor antagonists ketamine and dextromethorphan suppressed the naloxone-induced morphine abstinence syndrome. In addition, the previous blockade by ketamine and dextromethorphan of NMDA receptors has been shown to intensify the naloxone-elicited morphine abstinence syndrome. On the basis of this information, another noncompetitive NMDA receptor antagonist, (+)-5-methyl-10,11-dihydro-5H-dibenzo-a,d-cyclohepten-5,10-imine maleate (MK 801), was administered to rats in which two morphine-containing (75 x 2 morphine base) pellets had been implanted. The naloxone-precipitated abstinence syndrome in rats injected with 0.3 mg/kg MK 801 36 h after pellet implantation was found significantly more intense than controls whereas the abstinence syndrome in rats that received 0.1 mg/kg MK 801 before naloxone injection was less intense. The intensification by MK 801 given 36 h following pellet implantation was attributed to the further increase in upregulation and supersensitivity of NMDA receptors caused by morphine. The attenuation was explained by the blockade by MK 801 of NMDA receptors as occurred in the case of ketamine and dextromethorphan.
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Affiliation(s)
- H Koyuncuoğlu
- Istanbul Medical Faculty, Department of Pharmacology and Clinical Pharmacology, Capa, Türkey
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Abstract
It has previously been shown that subchronic and acute administration of L-asparaginase and glutaminase inhibitors D-Aspartic acid (D-ASP) and prolyl-leucyl-glycinamide (PLG) intensifies and attenuates morphine (M) physical dependence, respectively, by the inhibition of ASP and glutamic acid (GLU) production, and subsequently their normal releases. Tizanidine (TIZ) has long been known to be an alpha 2-adrenoceptor agonist and inhibitor of ASP and GLU release. Therefore, in this study TIZ has been administered subchronically during the development of M physical dependence to rats in which M-containing pellets had been implanted or acutely 30 min before naloxone (NL)-induced abstinence syndrome. The subchronic administration of TIZ intensified NL-precipitated abstinence syndrome whereas its acute administration attenuated it, as did D-ASP and PLG. On the other hand, TIZ added into the medium prevented the in vitro M-dependent-made guinea pig ileum from contracting following NL application. Furthermore, TIZ stopped the already started contraction by NL of the M-dependent ileum, which completely relaxed later. These effects of TIZ on M-dependent ileum were antagonized by the alpha 2-adrenoceptor antagonist yohimbine. The intensification by subchronic TIZ administration of abstinence syndrome was attributed to the lesser release of ASP and GLU, which resulted in the larger blockade of M of ASPergic/GLUergic receptors due to the lesser release of their endogenous agonist ASP and GLU and consequently the higher upregulation of the receptors. The attenuation by acute TIZ administration of NL-precipitated abstinence syndrome was explained with lesser release of ASP and GLU and concomitantly the lesser stimulation of the receptors.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- H Koyuncuŏglu
- Istanbul Medical Faculty, Department of Pharmacology and Clinical Pharmacology, Turkey
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