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Item Diffusion-Weighted Imaging of Breast Cancer: Correlation of the Apparent Diffusion Coefficient Value with Pathologic Prognostic Factors(2019) Tezcan, Sehnaz; Uslu, Nihal; Ozturk, Funda Ulu; Akcay, Eda Yilmaz; Tezcaner, Tugan; 31620686; ABC-5258-2020Objective: The aim was to evaluate relationship between apparent diffusion coefficient (ADC) values with pathologic prognostic factors in breast carcinoma (BC). Materials and Methods: 83 patients were enrolled in this study. Prognostic factors included age, tumor size, expression of estrogen receptor (ER) and progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2), nuclear grade (NG), lymph node involvement and histologic type. The relationship between ADC and prognostic factors was determined using Independent sample t-test, ANOVA, Pearson correlation and relative operating characteristics (ROC) analysis. Results: There was no significant difference between ADC and prognostic factors, including age, tumor size, ER, HER2 and histologic type. The PR-positive tumors (p=0.03) and axillary lymph node involvement (p=0.000) showed a significant association with lower ADC values. The ADC values were significantly lower in high-grade tumors than low-grade tumors (p=0.000). ROC analysis showed an optimal ADC threshold of 0.66 (x10-3 mm(2)/s) for differentiating low-grade tumors from high-grade tumors (sensitivity, 85.5%; specificity, 81%; area under curve, 0.90). Conclusion: The lower ADC values of BC were significantly associated with positive expression of PR, LN positivity and high-grade tumor. Especially, ADC values were valuable in predicting NG subgroups.Item Effect of the Bioadhesive, BioGlue, on Impaired Colonic Anastomose Healing in Rats(2015) Ekici, Yahya; Akcay, Eda Yilmaz; Moray, GokhanColonic anastomotic leakage is still a problem in general surgery practice. We sought to investigate the effect of a new tissue adhesive, BioGlue, on the healing of normal and impaired colonic anastomoses. Sixty-four rats were randomized into 4 groups. In all animals, a 1-cm segment of the left colon was resected, and an end-to-end sutured anastomosis was created. Animals were then divided into 2 groups: normal and impaired anastomosis. These 2 groups were further subdivided into 2 additional groups: animals that received BioGlue and those that did not. All rats received intraperitoneal injections of either 0.9% NaCl or 5-fluorouracil (5-FU). Anastomotic evaluation was done 7 days after surgery. Macroscopic healing, mechanical strength, and histopathologic healing parameters were evaluated. Leakage of the anastomosis was significantly higher in rats in the impaired group compared with those in the BioGlue groups (P = 0.043). The adhesion formation score was significantly higher in rats in the impaired anastomosis group compared with the other groups. Bursting pressures were significantly lower in the impaired anastomosis group than in the other ones (P = 0.001). Neoangiogenesis and fibroblast activity were different among the groups (P = 0.001). Inflammatory cell infiltration and collagen deposition did not differ among the groups (P = 0.07). Immediate postoperative intraperitoneal administration of 5-FU after colonic anastomosis inhibits intestinal wound healing. Covering colon anastomoses with BioGlue after suturing conferred beneficial effect on healing.Item Recurrent Pleomorphic Adenoma of the Submandibular Gland(2016) Inan, Serhat; Aydin, Erdinc; Babakurban, Seda Turkoglu; Akcay, Eda Yilmaz; 0000-0001-6864-7378; 0000-0001-6831-9585; 0000-0001-5067-4044; 29392015; AAJ-1407-2021; AAJ-2379-2021; AAK-1960-2021; AAI-8856-2021Pleomorphic adenoma (PA) is the most common benign tumor of salivary glands. Most PAs occur in the parotid (80%), followed by the submandibular gland (10%) and minor salivary and sublingual glands (10%). Submandibular gland PAs usually manifest in the submandibular area as a painless hard mass. Although several recurrent parotid gland PA cases have been reported in the literature, recurrent submandibular gland PA is quite rare. Complete surgical removal of tumor of the submandibular gland and keeping the capsule intact are important to prevent recurrence. Here we present a rare case of submandibular gland PA recurrence that occurred 5 years after the first surgery and methods to prevent recurrence.Item Clear Cell Acanthoma in an Unexpected Location(2018) Togral, Arzu Karatas; Eyuboglu, Atilla Adnan; Akcay, Eda Yilmaz; Ertas, Nilgun MarkalClear cell acanthoma (CCA) is an uncommon, benign, and slow progressing lesion originating from epidermal keratinocytes. Lesions are not gender specific and usually diagnosed at 50-60 years of age. It is generally represented in the lower extremities. CCA was first described by Degos et al. as "Degos acanthoma" for a lesion presented in the lower extremity. Clinically, it is hard to distinguish whether the lesion is benign or malignant. Final diagnosis can be made histopathologically. Biopsy material is periodic acid-Schiff positive. While CAA commonly presents itself in the lower extremities, our patient had a CAA in his abdominal region.Item A Rare Case of the Urinary Bladder: Small Cell Carcinoma(2018) Kervancioglu, Enis; Dirim, Ayhan; Akcay, Eda YilmazSmall cell carcinoma generally originates from the lungs. However, rarely, it could be observed in organs other than the lungs. Primary small cell carcinoma of the bladder is a rare and aggressive disease and it generally presents itself with metastasis. Although there has not been a consensus on the method of treatment for this rare disease, multimodal treatment is recommended. In this study, we present long-term results of transurethral resection in a patient with non-muscle-invasive primary small cell carcinoma who refused additional treatments.