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Dive into the research topics where Canan Ersöz is active.

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Featured researches published by Canan Ersöz.


Diagnostic Cytopathology | 1998

Fine-needle aspiration cytology and immunocytochemistry of Hodgkin's disease, suppurative type

Edneia Tani; Canan Ersöz; Erik Svedmyr; Lambert Skoog

We describe 3 cases of Hodgkins disease (HD) of unusual suppurative type, which were diagnosed on fine‐needle aspirates. The smears were dominated by neutrophils, macrophages, and cellular debris. Only a few large, atypical cells of Hodgkin and Reed‐Sternberg type were observed. The differential diagnoses of such smears include infectious mononucleosis, tuberculosis, metastatic lymph node involvement, non‐Hodgkins large‐cell anaplastic Ki‐1‐positive lymphomas, T‐cell‐rich B‐cell lymphomas, and peripheral T‐cell lymphomas of mixed type. Immunocytochemistry identified the large atypical cells as CD 30 (BerH2)‐positive and negative for CD 45 (LCA) in cytospin material from 2 patients, which allowed a conclusive diagnosis of HD. Diagn. Cytopathol. 1998;18:437–440.© 1998 Wiley‐Liss, Inc.


Acta Cytologica | 2005

Fine Needle Aspiration Cytology of Ovarian Lesions

Aysun Uguz; Canan Ersöz; Filiz Bolat; Ayse Gokdemir; M.Ali Vardar

OBJECTIVE To assess the diagnostic value of fine needle aspiration cytology (FNAC) in ovarian lesions. STUDY DESIGN Sixty-two fine needle aspirations of varied ovarian masses were performed between January 2000 and February 2003. Aspiration material was obtained from fresh tissues at the time of frozen section before dissection of the specimens. The slides were evaluated by a pathologist who was blinded to the gross findings and histopathologic diagnosis. RESULTS A total of 62.9% of cases were assessed as malignant and 30.6% as benign. Two false positive and 2 false negative cases occurred. In our series the overall sensitivity and specificity were 95.1% and 90.4%, respectively. Seven benign and 15 malignant lesions could be subclassified specifically. CONCLUSION We studied excised specimens, but since ovarian masses are reachable by laparoscopically and ultrasonographically guided aspiration, FNAC can be used for diagnoses of these lesions. If a multidisciplinary approach can be carried out in patients with ovarian lesions, cytopathologic interpretation can provide optimum benefits.


Cytopathology | 2007

Cystic lesions of the head and neck: cytohistological correlation in 63 cases

Pinar Firat; Canan Ersöz; Aysun Uguz; Sevgen Onder

Objective:  To investigate the accuracy of fine needle aspiration cytology (FNAC) in the diagnosis of cystic masses of the head and neck (H&N), excluding thyroid lesions.


Acta Cytologica | 1998

Fine needle aspiration cytology of Hepatoblastoma : A report of two cases

Canan Ersöz; Unal Zorludemir; Atila Tanyeli; Derya Gumurdulu; Medih Çeliktaş

BACKGROUND Hepatoblastoma is the most common primary hepatic tumor in children. The literature contains few examples of fine needle aspiration (FNA) cytology of these tumors. CASES A 5-month-old and 4-month-old underwent ultrasonography-guided FNA for the preoperative investigation of hepatic masses. The smears were stained with May-Grünwald-Giemsa and Papanicolaou stain. Alcohol-fixed smears were used for immunocytochemistry. All smears revealed cells with round/oval nuclei, prominent nucleoli and vacuolated cytoplasm, arranged in groups and acinar structures. The groups were embedded in a myxoid stroma. alpha-Fetoprotein was positive in all, and vimentin was positive in some tumor cells. The cytologic findings resembled the histologic counterpart in one case, and the other case agreed with the clinical/radiologic prediagnosis. Immunocytochemistry was supportive. CONCLUSION FNA cytology can be diagnostic in many other childhood tumors as well as hepatoblastomas. Detailed descriptions of cytomorphologic features of hepatoblastoma will help FNA to be used confidently on these tumors.


Cancer | 2004

Fine-needle aspiration cytology of solitary thyroid nodules: how far can we go in rendering differential cytologic diagnoses?

Canan Ersöz; Pinar Firat; Aysun Uguz; Gamze Mocan Kuzey

Fine-needle aspiration cytology (FNAC) is a diagnostic tool used in the clinical workup of solitary thyroid nodules; however, differential cytologic diagnosis of these nodules often is challenging. With the goal of identifying cytologic findings that could improve predictions regarding the presence of neoplastic lesions, the authors performed a retrospective review of cases in which FNAC led to diagnoses of solitary cellular nodules or cellular microfollicular lesions at two university hospitals. FNAC smears associated with cases for which surgical specimens subsequently were obtained were reviewed. FNAC accurately detected follicular neoplasms in 76% of cases at one hospital and in 67% of cases at the other. In the current report, the cytologic findings made in these cases are reevaluated, and the potential diagnostic contribution of available clinical data is discussed. Cancer (Cancer Cytopathol) 2004.


Diagnostic Cytopathology | 1998

Salivary duct carcinoma ex pleomorphic adenoma: Analysis of the findings in fine-needle aspiration cytology and histology

Canan Ersöz; Fikret Çetik; Ozlem Aydin; Ediz Coşar; Derya Talas

Salivary duct carcinoma (SDC) is an uncommon and highly aggressive neoplasm that reveals histopathologic features resembling infiltrating duct carcinoma of the breast and prostate. SDC arising on the basis of preexisting pleomorphic adenoma (PA) is very rare. This report describes the fine‐needle aspiration (FNA) cytology of a case of SDC ex PA. FNA smears were cellular with cells with large, pleomorphic nuclei, some prominent nucleoli, and finely vacuolated cytoplasm. The neoplastic cells were forming groups, sheets, and papillary structures and a cribriform pattern was present in some sheets. Mitotic figures were frequently seen. Necrosis was prominent in the background. Histologic sections of the tumor revealed areas of comedo carcinoma, papillary carcinoma, and infiltrative carcinoma as well as multiple foci of PA. The presence of a cribriform pattern, tumor cells resembling breast ductal carcinoma cells, and a necrotic background are helpful features for an accurate cytodiagnosis of SDC. Diagn. Cytopathol. 1998;19:201–204.


Leukemia Research | 2003

Serous retinal detachment in a case with chronic lymphocytic leukemia: no response to systemic and local treatment

Semra Paydas; Merih Soylu; Umut Disel; Sinan Yavuz; Berksoy Sahin; Canan Ersöz; Melek Ergin; Aysun Uguz

Leukemias are systemic hematopoietic neoplasias and not infrequently cause ocular findings. Serous retinal detachment (SRD) is one of these manifestations and even may be the first sign of the underlying leukemia. Here we reported a case with chronic lymphocytic leukemia (CLL) presenting with SRD and discussed the clinical importance and therapeutic options.


Acta Cytologica | 2003

Preoperative brush and impression cytology in ocular surface squamous neoplasms.

Canan Ersöz; Meltem Yagmur; T. Reha Ersöz; Müslime Yalaz

OBJECTIVE Preoperative cytologic diagnoses of ocular surface squamous neoplasms were evaluated and compared with histologic diagnoses. STUDY DESIGN Impression cytology (Millipore filter paper) and brush cytology were applied to 32 patients who had conjunctival neoplasms. Papanicolaou-stained cytologic preparations and hematoxylin and eosin-stained histologic sections were examined by light microscopy. RESULTS The brush technique was used on 27 patients; impression cytology was applied in 5 cases. Cytologic and histologic diagnoses were concordant in 26 cases. Squamous cell carcinoma or carcinoma in situ was diagnosed in 18 and dysplasia in 4 cases. Squamous metaplasia and normal-appearing conjunctival epithelial cells were diagnosed cytologically in four cases; of those histologic diagnoses, one was pterygium and three, conjunctival nevus. Four cases revealed discrepancies between the cytologic and histologic preparations. There was one false positive result, and one case was subconjunctival invasion of basal cell carcinoma of the eyelid. CONCLUSION Impression and brush cytology are fast, cost-effective, reliable and noninvasive diagnostic tools for ocular surface squamous neoplasms. However, the brush technique has several advantages over impression cytology.


Pediatric Hematology and Oncology | 2005

NON-HODGKIN LYMPHOMA PRESENTING WITH UVEITIS OCCURRING AFTER BLUNT TRAUMA

Merih Soylu; Altan Atakan Özcan; Okan Okay; Canan Ersöz; Ilgen Sasmaz; Atilla Tanyeli

We report here an unusual patient suffering from visual loss with refractory uveitis which was occured after a blunt trauma to her left eye. While in the hospital cervical lymph node and anterior chamber aspiration cytology with immunohistochemical staining were performed. The histopathologic diagnosis was highly malignant B-cell non-Hodgkin lymphoma. After the inflammation of the eye was regressed with chemotherapy, pars plana vitrectomy-lensectomy was performed. She was free of inflammation and the best corrected visual acuity was increased. However, she had a refractory inflammatory episode with clumps of cells in the anterior chamber 10 months after the operation. Local radiotherapy to the left eye was applied. Radiotherapy provided local control and preservation of the vision. The present case is presented in order to emphasize the importance of systemic evaluation in uveitis and possible role of trauma leading migration of atypical cells into the eye.


Pediatric Surgery International | 2004

A tubulopapillary adenoma of the gallbladder in a child of 3 years

Canan Ersöz; Aysun Uguz; Yaşar Ergören; Zafer Koç

Adenoma is the most frequent type of gallbladder (GB) neoplasm; however, GB neoplasms are unusual and unsuspected diagnoses in childhood. The average patient age is 50.5±16.3 years. We present a case of tubulopapillary adenoma of the gallbladder in a 3-year-old girl. She was admitted to the hospital with a 6-month history of abdominal pain and nausea and vomiting. Ultrasonography (USG) revealed an echogenic soft tissue lesion in the lumen of the GB. She underwent cholecystectomy. A tubulopapillary adenoma and adenomatous hyperplasia of the GB were diagnosed histologically. According to the literature, this is the youngest patient found to have gallbladder adenoma.

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