Bulunan: 8 Adet 0.001 sn
Koleksiyon [7]
Tam Metin [1]
Yayın Türü [2]
Yazar [20]
Yayın Yılı [7]
Konu Başlıkları [20]
Yayıncı [3]
Yayın Dili [2]
Dergi Adı [8]
Rate of malignancy in exophytic thyroid nodules

Dellal F.D. | Baser H. | Arpaci D. | Tam A.A. | Ozdemir D. | Kilicarslan A. | Dumlu E.G.

Article | 2017 | Iranian Journal of Radiology14 ( 2 )

Background: There are ultrasonography (US) features suggested to be associated with a higher risk of malignancy in thyroid nodules. However, exophytic appearence of thyroid nodules has not been studied previously. Objectives: To evaluate US features, and cytological and histopathological findings in exophytic thyroid nodules. Patients and Methods: Patients with an exophytic thyroid nodule who underwent fine needle aspiration biopsy (FNAB) between January and July 2015 were evaluated prospectively. Demographical data, US features, and cytology results were noted and histopathological findings were determined in operated patients. The . . . results were compared with non-exophytic nodules of age and sex matched patients. Results: Data of 253 exophytic nodules in 247 patients and 529 non-exophytic nodules in 357 patients were analyzed. Hypoechogen-ity, mixed texture, and absence of peripheral halo were significantly higher in exophytic nodules (P < 0.001, P < 0.001, and P = 0.018, respectively). Nondiagnostic, atypia of undetermined significance/follicular lesion of undetermined significance and suspicious for malignancy cytology results were significantly higher in exophytic nodules (P = 0.002, P < 0.001 and P < 0.001 respectively). 6.7% of exophytic nodules and 1.9% of non-exophytic nodules had malignant cytology (P = 0.001). Histopathologically, 35 (47.9%) of 73 exophytic nodules and 18 (24.3%) of 74 non-exophytic nodules were malignant (P < 0.01). Capsular invasion was higher in the malignant exophytic group (53.5% vs 14.3%, P = 0.027). US features other than hypoechoic pattern which was higher in the malignant group were similar in benign and malignant exophytic nodules. Conclusions: Exophytic nodules seem to carry a higher rate of malignancy both cytologically and histopathologically. Suspicous US features except hypoechoic pattern were not higher in malignant compared to benign exophytic nodules. © 2016, Tehran University of Medical Sciences and Iranian Society of Radiology Daha fazlası Daha az

The UroVysion fluorescence in situ hybridization assay is an effective tool for monitoring recurrence of bladder cancer

Varella-Garcia M. | Akduman B. | Sunpaweravong P. | Di Maria M.V. | Crawford E.D.

Article | 2004 | Urologic Oncology: Seminars and Original Investigations22 ( 1 ) , pp.16 - 19

The newly developed UroVysion fluorescence in situ hybridization (FISH) probe was applied to urine specimens from 19 patients being monitored for recurrence of bladder cancer. The results for the multi-target DNA FISH assay were compared with independent analyses of urine cytology and flexible cystoscopy. Patients with tumors identified through the cystoscopy exam were biopsied and/or underwent surgery. In 12 patients with normal cytoscopy, cytology and FISH were also normal. Therefore, the specificity of these two tests was 100%. In 7 patients, a tumor was diagnosed by cystoscopy, and 3 of them had abnormal urine cytology while 6 o . . .f them had an abnormal result in the FISH assay. Accordingly, the sensitivity was 43% for the cytology and 87% for the FISH test. Interestingly, a pT1G3 tumor in a bladder diverticulum was not detected by cytology or the FISH test. These results agreed with a large series previously published using similar FISH probes and support the proposal for a multicenter trial to confirm the usefulness of the UroVysion probe as a screening tool to select patients for cystoscopy. © 2004 Elsevier Inc. All rights reserved Daha fazlası Daha az

Spontaneous infarction of a pleomorphic adenoma in parotid gland: Diagnostic problems and review

Behzatoglu K. | Bahadir B. | Huq G.E. | Kaplan H.H.

Review | 2005 | Diagnostic Cytopathology32 ( 6 ) , pp.367 - 369

Although infarction of parotid gland pleomorphic adenoma (PA) following fine-needle aspiration (FNA) has been well-documented, spontaneous infarction of PA has remained as an uncommon entity in the literature. To our knowledge, we report the second case of spontaneous infarction occurring in a parotid gland PA. A 44-yr-old man presented with a 2-yr history of slowly enlarging right parotid mass, which had become painful 1 mo before performing FNA biopsy. Smears revealed abundant necrotic debris, atypical squamous cells, and small cells with dark nuclei suggestive of a carcinoma. Histologic examination of the tissue fragments demonst . . .rated degenerated clusters of cells and chondromyxoid matrix. The parotidectomy specimen had features consistent with those of an infarcted PA. Although appears to be rare, spontaneous infarction of PA should be considered in the differential diagnosis, since necrosis may mimic carcinoma and cause misinterpretation of necrosis as an indication of malignancy, in an otherwise benign salivary gland neoplasm. © 2005 Wiley-Liss, Inc Daha fazlası Daha az

Urothelial neoplasm of pelvis renalis with cytomorphology findings [Sitomorfolojik bulgularla pelvis renalisin üroteryal neoplazmi]

Barut F. | Kertiş G. | Bahadir B. | Özdamar S.O. | Gün B.D. | Seçkiner I. | Kuzey G.M.

Article | 2009 | Journal of Experimental and Clinical Medicine (Turkey)26 ( 2 ) , pp.96 - 98

Diagnostic value of cytology in urinary system malignancies [Üriner sistem malignitelerinde sitolojinin tanisal önemi]

Onak Kandemir N. | Bektaş S. | Barut F. | Bahadir B. | Yurdakan G. | Dogan Gun B. | Mungan A.

Article | 2010 | Turk Onkoloji Dergisi25 ( 2 ) , pp.49 - 56

OBJECTIVES: The contribution of cytological methods to the diagnosis and follow-up of urinary system malignancies was investigated in this study, along with histological diagnosis and clinical follow-up results of the cases. METHODS: One hundred forty-four cases who underwent cystoscopy in ZKÜTF Urology Department between 2003 and 2007 were included in this study, and urinary cytology and biopsy samples were assessed in the Pathology Department. RESULTS: When cytological and histological diagnoses were compared, results in 17 positive cases and in 109 negative cases were consistent. Three cases were false-positive and 15 cases were . . .false-negative. In our series, sensitivity of urinary cytological diagnostic methods was 53% and specificity was 97%. CONCLUSION: Our study shows that urinary cytology has a high diagnostic value in the evaluation of urinary system diseases. However, decrease in the sensitivity of this method in low-grade urothelial tumors should be taken into account. © 2010 Association of Oncology Daha fazlası Daha az

Comparison of the diagnostic results of bronchoalveolar lavage with synchronous transbronchial biopsies [Bronkoalveoler lavaj-transbronşiyal biyopsi tanilarinin karşilaştirilmasi]

Barut F. | Özdamar Ş.O. | Bahadir B. | Dogan Gün B. | Bektaş S. | Çolak S. | Mocan Kuzey G.

Article | 2007 | Turkiye Klinikleri Journal of Medical Sciences27 ( 2 ) , pp.179 - 183

Objective: Bronchoalveolar lavage performed during bronchoscopic examination is a type of cytologic sampling with great diagnostic significance. Its diagnostic value is enhanced when biopsy is unavailable and bronchoalveolar lavage is the unique sample. Determining the diagnostic accuracy of bronchoalveolar lavage by comparing it with the diagnostic yield of synchronous biopsies is an indicator of its effectiveness. Material and Methods: In this study, 435 bronchoalveolar lavage and 273 bronchoscopic biopsy specimens obtained from January 2003 to December 2005 in the Department of Pulmonary Diseases were retrospectively evaluated in . . . the Department of Pathology, Faculty of Medicine, Zonguldak Karaelmas University. Results: Overall, 373 cases (85.8%) were diagnosed as benign and 12 cases (2.8%) were reported as malignant, while 18 cases (4.1%) were suspected to be malignant; the remaining 32 cases (7.3%) were reported as inadequate. The numbers and percentages of benign, malignant, suspected malignant and inadequate diagnoses of the 273 bronchoalveolar lavage cases with synchronous transbronchial biopsies were 229 (83.9%), 12 (4.5%), 16 (5.8%), and 16 (5.8%), respectively. After suspected malignant and inadequate samples were excluded, coomparison of cytologic and histologic diagnoses revealed that the diagnostic accuracy of bronchoalveolar lavage cytology was 79.4% and 91.6% for benign and malignant diagnoses, respectively; the rate of false negativity was 20.5% and false positivity was 8.3%. Conclusion: While sampling errors seemed to be the primary reason for false negative and false positive diagnoses, the rate of false cytologic evaluation was lower. Considering the false negative diagnoses for cases without biopsy specimens, comparison of bronchoalveolar lavage diagnoses with synchronous biopsies may serve as a quality control programme, since this condition may significantly influence the clinical course. Copyright © 2007 by Türkiye Klinikleri Daha fazlası Daha az

Cytological features of pure micropapillary carcinoma of various organs: A report of eight cases

Huq G.E. | Canberk Ş. | Öznur M. | Yildiz P. | Bahadir B. | Behzatoglu K.

Article | 2014 | Oncology Letters8 ( 2 ) , pp.705 - 710

Micropapillary carcinoma (MPC) is a rare aggressive tumor, which generally accompanies the primary carcinoma of the organ of its origin, while the pure form is extremely uncommon. Angiolymphatic involvement is widespread and a considerable proportion of the cases present with metastases. The current study presents eight pure MPC cases arising from the breast (n=3), urinary bladder (n=3), parotid gland (n=1) and lung (n=1, presenting with pericardial effusion), with the cytological findings. The eight patients included three female and five male cases aged between 48 and 74 years. The most common cytological findings were three-dimen . . .sional aggregates, cell clusters with angulated or scalloped borders, single cells with a columnar configuration and eccentric nuclei, and high-grade nuclear features. Histopathological sections showed accompanying in situ ductal carcinoma in the cases of MPC arising in the parotid gland and breast (n=3), and one case in the bladder exhibited only in situ MPC. The average follow-up period was 20 months (range, 6-54 months) and, during this period, three patients succumbed to the disease. At present, four patients are alive with disease and one patient is alive and disease-free. In conclusion, cytology is an important tool for the diagnosis and management of MPC Daha fazlası Daha az

Reasons for false-negative and false-positive diagnosis in fine needle aspiration cytology of the breast: 286 Cases with cyto-histopathologic correlation [Meme i·nce i·gne aspirasyon sitolojisinde yanliş negatif ve yanliş pozitif tani nedenleri: 286 Olguda sito-histopatolojik korelasyon]

Onak Kandemir N. | Bektaş S. | Barut F. | Yurdakan G. | Bahadir B. | Dogan Gün B. | Özdamar Ş.O.

Article | 2010 | Turk Patoloji Dergisi/Turkish Journal of Pathology26 ( 3 ) , pp.230 - 237

Objective: Fine needle aspiration cytology is the first step in the diagnosing breast lesions. This study evaluated factors causing false-negative and false-positive diagnoses when evaluating breast lesions using this technique. Material and Method: In this study, we retrospectively examined 511 breast diagnoses, based on Fine needle aspiration cytology specimens, made in the Medical School of Zonguldak Karaelmas University, Department of Pathology, between 2002 and 2009. Factors affecting the reliability of fine needle aspiration cytology were evaluated by comparing the cytological and biopsy diagnoses and using the clinical parame . . .ters in the diagnosis of breast lesions. Result: In our series, the sensitivity, specificity, accuracy, positive predictive value, and negative predictive value of fine needle aspiration cytology were 77%, 99%, 95%, 93%, and 95%, respectively. The false-negative diagnosis rate was 4% and the false-positive diagnosis rate was 1%. Conclusion: Sampling errors and erroneous interpretation of cellular monomorphism are the most important reasons for false-negative diagnosis results in the evaluation of breast lesions with fine needle aspiration cytology. Increased cellularity and reactive cell atypia in benign proliferative breast lesions are the most frequent reasons for false-positive diagnosis Daha fazlası Daha az

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