Person: AKYILDIZ, ELİF ÜLKER
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AKYILDIZ
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ELİF ÜLKER
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Publication Diagnostic value of cervical mediastinoscopy: Report of 506 cases(European Respiratory, 2013-09-01) Erol, Mehmet; Melek, Hüseyin; Bayram, Ahmet; Kermenli, Tayfun; Coşkun, Funda; Akyıldız, Elif; Gebitekin, Cengiz; Erol, Mehmet; MELEK, HÜSEYİN; BAYRAM, AHMET SAMİ; Kermenli, Tayfun; COŞKUN, NECMİYE FUNDA; AKYILDIZ, ELİF ÜLKER; GEBİTEKİN, CENGİZ; Tıp Fakültesi; Göğüs Hastalıkları Bölümü; 0000-0003-0684-0900; 0000-0002-7371-4026; 0000-0003-3604-8826; AAE-1069-2022; AAD-1271-2019; AAI-5039-2021; JCE-0097-2023; ABB-7580-2020; KHO-7454-2024; A-6612-2019; IAV-7890-2023Publication Immunohistochemistry for differentiation of pleural epithelioid malignant mesothelioma from adenocarcinoma: A panel for selection(Bilimsel Tıp Publishing House, 2010-12-01) Akyıldız, Elif Ülker; Öz, Buge; Aki, Hilal; Demirkaya, Ahmet; AKYILDIZ, ELİF ÜLKER; Tıp Fakültesi; Patoloji Ana Bilim Dalı; JHY-9777-2023Objective: An important difficulty pathologists confront concerning thoracic pathology is the differentiation of pleural epithelioid malignant mesothelioma from pulmonary adenocarcinoma infiltrating into the pleura or metastatic adenocarcinoma. Since epithelioid malignant mesothelioma may depict microscopic patterns similar to adenocarcinoma, morphological findings may not be sufficient to make a differential diagnosis. Up to now, many immunohistochemical markers have been proposed for their differentiation and there have been many studies on the sensitivity and specifity of each marker.Material and Method: In this study we retrospectively evaluated the reports on patients diagnosed as pleural epithelial MM and patients diagnosed as adenocarcinoma infiltrating into the pleura for the past seven years and determined the immunohistochemical markers used for differential diagnosis.Results: Most frequently used markers were calretinin and CK5/6 for epithelioid malignant mesothelioma and CEA, CD15 and TTF-1 for adenocarcinoma. EMA was used in both groups.Conclusion: We found that a panel including calretinin and CK5/6 for malignant mesothelioma and CEA and CD15 for adenocarcinoma and additionally EMA and TTF-1 avoided the difficulty in all cases. We consider that, if there is any inconsistency between the results of staining with these six markers, other antibodies should be incorporated into the panel.Publication Gastrointestinal stromal tumor of the esophagus: Report of a case(Derman Medical Publ, 2016-01-01) GEBİTEKİN, CENGİZ; Erol, M. Muharrem; Melek, Huseyin; MELEK, HÜSEYİN; BAYRAM, AHMET SAMİ; Akyıldız, Elif Ülker; AKYILDIZ, ELİF ÜLKER; Tıp Fakültesi; Göğüs Cerrahisi Ana Bilim Dalı; 0000-0003-0684-0900; ABB-7580-2020; AAI-5039-2021; JCE-0097-2023; AAE-1069-2022Gastrointestinal stromal tumors are rare neoplasms to be thought to arise from mesenchymal cells of the gastrointestinal tract. Gastrointestinal stromal tumors (GIST) of the esophagus am weIl documented but are very much rarer than gastrointestinal stronmI tumors of the stomach and small [voted, We describe a case of GIST of the esophagus that was resected With wide surgical resection.Publication Evaluation of prognostic factors on survival in non-small-cell lung cancer patients treated with postoperative radiotherapy(Kare Publ, 2009-01-01) Sarıhan, Süreyya; SARIHAN, SÜREYYA; Gebitekin, Cengiz; ERCAN, İLKER; GEBİTEKİN, CENGİZ; Bayram, Ahmet Sami; BAYRAM, AHMET SAMİ; EVRENSEL, TÜRKKAN; Evrensel, Turkkan; Akyıldız, Elif Ülker; AKYILDIZ, ELİF ÜLKER; Tıp Fakültesi; Biyoistatistik Ana Bilim Dalı; 0000-0003-4816-5798; 0000-0003-0684-0900; 0000-0002-2382-290X; ABB-7580-2020; AAJ-1027-2021; JCE-0097-2023; AAH-4970-2021; AAE-1069-2022OBJECTIVESTo investigate the prognostic factors on survival in non-small-cell lung cancer patients treated with postoperative radiotherapy.METHODSSixty-five patients treated with a median dose of 59 Gy (50-66.6 Gy) between October 1995 and January 2005 were included in the study. Clinical and categorical variables were analyzed.RESULTSOn multivariate analysis, presence of clinical N2 and brain metastasis at first relapse and absence of chemotherapy (p=0.02, p=0.004, p=0.004) had a negative impact on overall survival, while presence of pathological nodal involvement and absence of chemotherapy (p=0.02, p=0.04) were effective on disease-free survival. Regarding categorical variables, type of resection was found related with positive margin and N1, right-sided location with N1-e and N2, and systematic nodal dissection with N1. The number of involved lymph nodes was found related with N2 skip metastasis and involved N1-10 was related with N1-e.CONCLUSIONPresence of metastatic lymph nodes was found to be a poor prognostic factor and delivery of chemotherapy was seen to positively affect overall and disease-free survival rates.Publication Platin-based chemotherapy does not improve survival in patients with non-metastatic resected typical carcinoid tumors(Spandidos Publ Ltd, 2022-10-01) Şahin, Ahmet Bilgehan; Melek, Hüseyin; Ocak, Birol; Oyucu Orhan, Sibel; Erkan, Buket; Caner, Burcu; Deligönül, Adem; Çubukcu, Erdem; Bayram, Ahmet Sami; Akyıldız, Elif Ülker; Evrensel, Türkkan; ŞAHİN, AHMET BİLGEHAN; MELEK, HÜSEYİN; OCAK, BİROL; OYUCU ORHAN, SİBEL; ERKAN ÖZMARASALI, BUKET; CANER, BURCU; DELİGÖNÜL, ADEM; ÇUBUKÇU, ERDEM; BAYRAM, AHMET SAMİ; AKYILDIZ, ELİF ÜLKER; EVRENSEL, TÜRKKAN; Tıp Fakültesi; Tıbbi Onkoloji Ana Bilim Dalı; 0000-0002-7846-0870; 0000-0003-0684-0900; 0000-0003-1822-8153; 0000-0001-8217-3471; 0000-0003-1591-3323; AAM-4927-2020; AAI-5039-2021; AEC-2238-2022; AAJ-8314-2021; CPN-8681-2022; HJH-6371-2023; ESM-4544-2022; ETP-1691-2022; ABB-7580-2020; ELN-4128-2022; EXZ-0745-2022Chemotherapy is controversial in non-metastatic typical carcinoid (TC) tumors. Therefore, it was aimed to evaluate the impact of platin-based chemotherapy on the survival of patients with lung TC. The medical records of patients who underwent surgical resection for non-metastatic TC from 2002 to 2020 at our institution were retrospectively reviewed. Multivariate regression analysis was performed for chemotherapy and prognostic factors in disease-free survival (DFS) in 72 patients. The pathological stages of patients were as follows: 73.6% of the patients were in stage I, 15.3% in stage II and 11.1% in stage III. A total of 5 patients (6.9%) received platin-based chemotherapy and 6 patients (8.3%) had recurrences. The DFS rates at 12, 36 and 60 months were 98.5, 95.1 and 92.5%, respectively. Log-rank testing showed that patients who received chemotherapy and had stage III disease had shorter DFS (P=0.021 for chemotherapy and P<0.001 for stage). However, multivariate analysis revealed that the pathological stage was the only statistically significant factor affecting DFS (P=0.016). Platin-based chemotherapy did not improve DFS, and the eighth edition of TNM (tumor, nodes, metastases) staging did have prognostic value for patients with non-metastatic TC. Although resection has satisfying long-term outcomes, studies on new agents are needed to decrease the recurrence rate, particularly in patients with stage III disease.Publication Bronchial carcinoid tumors with massive osseous metaplasia: A case report and review of the literature(Türk Patoloji Derneği, 2020-05-01) Özşen, Mine; Yalçınkaya, Ulviye; Akyıldız, Elif Ülker; Bayram, Ahmet Sami; Gökalp, Gökhan; YALÇINKAYA, ÜLVİYE; AKYILDIZ, ELİF ÜLKER; BAYRAM, AHMET SAMİ; GÖKALP, GÖKHAN; Tıp Fakültesi; Cerrahi Patoloji Ana Bilim Dalı; 0000-0002-5771-7649; 0000-0003-0684-0900; JHY-9777-2023 ; AAI-2336-2021; ABB-7580-2020; AAH-8924-2021Bronchial carcinoid tumors are primary lung neoplasms thought to originate from neuroendocrine cells, i.e. Kulchitsky cells, in the bronchial mucosa, although the type of cellular origin has not been clearly understood. A 61-year-old male patient underwent surgery and microscopic examination of the specimen revealed an anastomosing trabecular bony structure among the nests of tumor cells with round nucleus, granular chromatin, and large eosinophilic cytoplasm. Our case has been deemed worthy of being presented as bronchial carcinoid tumor with exaggerated osseous metaplasia.Publication Immunoglobulin g4-related disease presenting as a mass in the lung(Turkish League Against Rheumatism, 2022-03-01) Akyol, Sevda; Hasdemir, Seçil; Akyıldız, Elif Ülker; AKYILDIZ, ELİF ÜLKER; Tıp Fakültesi; Patoloji Ana Bilim DalıPublication An incidental unique mediastinal mass in an asymptomatic young patient: Thymolipoma(Turkish Assoc Tuberculosis & Thorax, 2013-01-01) Uğraş, Nesrin; Akyıldız, Elif Ülker; Ünal, Nermin; Bayram, Ahmet Sami; UĞRAŞ, NESRİN; AKYILDIZ, ELİF ÜLKER; Ünal, Nermin; BAYRAM, AHMET SAMİ; Tıp Fakültesi; Patoloji Ana Bilim Dalı; 0000-0003-0684-0900; ABB-7580-2020; AAH-2716-2021; JHY-9777-2023; CDS-3138-2022Publication A rare hepatic tumor; hepatic epithelioid hemangioendothelioma(Derman Medical Publ, 2013-08-01) Akyıldız, Elif Ülker; Adım, Şaduman Balaban; Saraydaroğlu, Özlem; Kaya, Ekrem; Savcı, Gürsel; AKYILDIZ, ELİF ÜLKER; BALABAN ADIM, ŞADUMAN; SARAYDAROĞLU, ÖZLEM; KAYA, EKREM; SAVCI, GÜRSEL; Tıp Fakültesi; Radyoloji Ana Bilim Dalı; AAH-5481-2021; AAG-7319-2021; CBA-9252-2022; EMN-0789-2022; DOQ-8725-2022Primary sarcomas of the liver account for about 1% of all liver tumors. Two basic histological forms of these sarcomas are hepatic epithelioid hemangioendothelioma and angiosarcoma. Epithelioid hemangioendothelioma is a tumor of vascular origin that involves soft tissues and organs. Primary epithelioid hemangioendothelioma of the liver was first described by Ishak in 1984 and has an incidence of 1/100,000. We present a 68-year-old female case referred to the pathology department with an initial diagnosis of cholangiocellular carcinoma and diagnosed with primary hepatic epithelioid hemangioendothelioma with review of the literature.Publication Thoracic neurogenic tumors: A clinicopathologic evaluation of 42 cases(Asean Neurological Assoc, 2015-03-01) Akyıldız, Elif Ülker; Yalçınkaya, Ülviye; AKYILDIZ, ELİF ÜLKER; YALÇINKAYA, ÜLVİYE; Tıp Fakültesi; Patoloji Bölümü; AAH-8924-2021; ELN-4128-2022Background & Objective: Neurogenic tumors typically originate from the peripheral nerves, paraganglionic nerves, or the autonomic nervous system. Tumors arising from peripheral nerves are classified as schwannoma, neurofibroma, and malignant peripheral nerve sheath tumors while tumors arising from the sympathetic chain ganglion cells are classified as ganglioneuroma, ganglioneuroblastoma, and neuroblastoma. Tumors arising from the parasympathetic chain ganglion cells are classified as paraganglioma. Neurogenic tumors of the thorax are uncommon and originate from large airways, lungs, the mediastinum, or the chest wall. In this study, we report the clinical and histopathological features of 42 patients diagnosed with neurogenic tumors of the thorax. Methods: A retrospective review of the medical records of 42 patients diagnosed with intrathoracic neurogenic tumors and treated in Uludag University between 2002 and 2012 was conducted. All pathology specimens were examined by a pathologist experienced in the examination of soft tissue tumors. The patients were evaluated according to age, gender, location and histological characteristics of the tumor. Results: The study group included 42 patients diagnosed thoracic neurogenic tumors, including 31 female (74%) and 11 male (26%). The sex ratio was 2.8 (female/male) and the mean age of the study population was 38.52 years. The age of patients ranged from 3 to 73 years. The neurogenic tumor was located in the posterior mediastinum in 31(74%) patients, anterior mediastinum in 2 (5%) patients, and in the chest wall in 9 (21%) patients. The origin of the neurogenic tumor was the peripheral nerve sheath in 31 (74%) patients, and the ganglion cells in 10 (24%) patients, and the paraganglion system in 1 (2%) patient. The study group also included 20 (48%) patients diagnosed with schwannoma, 6 (14%) patients diagnosed with malignant peripheral nerve sheath tumor, 5 (12%) patients diagnosed with neurofibroma, 5 (12%) patients diagnosed with ganglioneuroma, 4 (10%) patients diagnosed with neuroblastoma, 1 (2%) patient diagnosed with ganglioneuroblastoma and 1 (2%) patient diagnosed with paraganglioma. Our study group comprised 36 adults and 6 children. Of the adult patients, 20 (55%) had schwannomas, 6 (17%) malignant peripheral nerve sheath tumor, 5 (14%) neurofibroma, 4 (11%) ganglioneuromas, and 1 (3%) paraganglioma. Four of the six children (66%) included in our study group were diagnosed with neuroblastoma, 1 (17%) child was diagnosed with ganglioneuroma, and 1 (17%) child was diagnosed with ganglioneuroblastoma. The malignancy rate was 83% in children and 17% in adults.Conclusion: Age is an important clinical parameter in terms of histological type and malignancy rate. In our study group, malignancy rate in children was much higher than adults. The most common thoracic neurogenic tumor in adults and children was schwannoma and neuroblastoma, respectively.