Comparison of urine cytology with histopathological diagnoses and determining its reliability İdrar si̇toloji̇leri̇ni̇n i̇stati̇sti̇ksel anali̇zi̇ ve hi̇stoloji̇k tanilarla karşilaştirilmasi

Purpose: Comparision of the urine cytology and histopathologic diagnoses and determining the reliability of cytologic diagnoses in the pathology department. Material and Method: The study was carried out on 265 urine cytology specimens from patients with a suspicion of bladder carcinoma. Results: Thirty-nine of 265 patients were diagnosed as transitional carcinoma. Seventeen of these cases were diagnosed correctly, and 11 of them were suspicious for malignancy with cytology. The sensitivity of urine cytology was 71%, specifity 100%, and accuracy was 73% respectively. Conclusion: There was no false positive results in our study. We conclude that false negative results may result from technical causes, insufficient clinical information for pathologic examination and inadequate fixation of materials

Prognostic importance of proliferating cell nuclear antigen immunoreactivity and mitotic index in malignant mesothelioma Mali̇gn mezotelyomada proli̇ferati̇ng nuclear cell anti̇jen i̇mmünreakti̇vi̇tesi̇ni̇n ve mi̇toti̇k i̇ndeksi̇n prognoza etki̇si̇

Aim: In this study, proliferating nuclear cell antigen (PCNA) immunoreactivity and the mitotix index were searched in human malignant mesothelioma to assess their prognostic value. Material and Methods: PCNA immunoreactivity was investigated in 19 cases. The authors also compared this with mitosis counts. Results: There was no correlation between the percentage of PCNA immunoreactive cells and their mitotic counts. However, the median survival was 16.4 months for patients with less than 25% PCNA immunoreactive cells, 17.8 months for patients with less than 4 mitotic figures 10 high power fields of tumoral tissue, 10.8 months for patients with more than 25 per cent PCNA immunoreactive cells, and 14.2 months for patients with more than 4 mitotic figures in 10 high power fields of tumoral tissue. Conclusion: Our results suggest that PCNA immunoreactivity and mitotic count may have prognostic values in malignant mesothelioma

Successful treatment of deep cutaneous zygomycosis developing early after renal transplantation

A 25-year-old male patient with end-stage renal disease due to chronic pyelonephritis who had undergone renal transplantation was admitted 20 days after the operation with complaints of nausea, vomiting and darkening in the skin of the transplantation site. A 30 × 30 cm area of skin at the transplantation site in the left inguinal area was dark colored and of necrotic appearance. Gram-negative and gram-positive bacilli were observed in the gram stain of the material taken from the lesion through thin needle aspiration. Surgical debridement of necrotic tissues at the lesion site was performed. There were fungi with bacterial groups and branched rough hyphae infiltrating the necrotic lipid and connective tissue. The venous wall was under the invasion of these fungi hyphae in the histopathological examination of the debridement material and a diagnosis of subcutaneous zygomycosis was established. Amphotericin B was administered for 14 days at a cumulative dose of 625 mg. The skin defect at the left lower quadrant was closed by placing a graft. The patient no longer required dialysis after two weeks of hospitalization. He was discharged 48 days later with total recovery of the lesion site and a serum creatinin level of 2 mg/dL, under treatment with cyclosporine 400 mg/day and prednisolone 20 mg/day

Gastrointestinal stromal tumors: A multicenter study of 1160 Turkish cases

Background/aims: The aim of this multicenter study was to determine the histopathological features and immunohistochemical profiles of gastrointestinal stromal tumors diagnosed in Turkish patients. Material and Methods: Twenty-eight participating centers registered their gastrointestinal stromal tumor cases on a nationwide database. The diagnosis of gastrointestinal stromal tumor relied upon hematoxylin & eosin features and the results of antibody panel including CD117, CD34, desmin, smooth muscle actin, S-100 protein, and Ki67. The database consisted of parameters including age, gender, location, and all other histopathological and immunohistochemical findings. Statistical analysis was performed using Pearson, Kruskal-Wallis, Mann-Whitney U, and Spearman tests. Results: From all of the gastrointestinal stromal tumors in the database, 1160 cases with a male to female ratio of 1.22 and a mean age of 56.75 years were included in the study. The most common location was the stomach (45.0%), followed by the small intestine, omentum-peritoneum, large intestine, and esophagus (32.0%, 12.6%, 9.3%, 1.1%, respectively). The risk groups were distributed as: 6.1% very low, 21.7% low, 19.3% intermediate, and 53% high-risk cases. Many histopathologic findings were correlated with risk groups. CD117 was positive in 95.3% of gastrointestinal stromal tumors, whereas CD34 was positive in 74.9%, smooth muscle actin in 45.9%, desmin in 9.2%, and S-100 in 19.1.%. Though no significant relation was found between CD117 expression and tumor location, CD34, smooth muscle actin and Ki67 expressions significantly varied in different locations (p=0.001) and risk groups. Conclusions: The results of this multicenter study demonstrated that features other than tumor size and mitosis and immune markers other than CD117 and Ki67 included in the antibody panel seem to be useful as predictive risk factors