Correlation between pre-radical prostatectomy standardized SUVmax ratios detected on 68Ga-PSMA-I&T PET/CT and final histopathology outcomes: an in-depth analysis.

OBJECTIVE: To evaluate the predictive potential of the maximum standardized uptake value(SUVmax) value of intraprostatic tumors derived from preoperative 68Ga-PSMA-I&T PET/CT (SUVT), and its ratios to SUVmax in the liver (SUVTLR) and parotid gland (SUVTPR) with respect to histopathological findings. MATERIALS AND METHODS: Data from patients who underwent radical prostatectomy (RP) for prostate cancer (PC) at our clinic between 2017 and 2020 were assessed. Patients with a secondary malignancy, a history of transurethral prostate resection, prior treatment for PC, or who received salvage RP were excluded. Whole-body images obtained using the same device, as per the guidelines, were reviewed by two nuclear medicine specialists with more than a decade of experience to reach a consensus for each lesion. The relationships between age, PSA, Prostate Volume, clinical T stage, biopsy International Society of Urological Pathology grade (ISUP), D'amico risk group, intraprostatic tumor volume (HPTV) identified in the final histopathological specimen review, HP-ISUP grade, seminal vesicle invasion (SVI), extracapsular invasion (ECI), positive surgical margine (PSM), SUVT, SUVTLR, and SUVTPR were analyzed. RESULTS: The mean age of the 64 included patients was 64.1 ±â€¯5.3. A statistically significant correlation was found between SUVT, SUVTLR, SUVTPR values, and histopathologic stage parameters, such as biopsy ISUP, D'amico Risk Classification, HP-ISUP, HPTV (p < 0.05). PSMATV, SUVT, and SUVTLR were statistically significant predictors of extracapsular invasion, while PSA, PSMATV, and SUVTLR were significant predictors of SVI (p < 0.05). CONCLUSION: The standardized SUVT, SUVTLR, and SUVTPR values could be employed as noninvasive markers to assist in predicting postoperative histopathological findings, particularly ECI, SVI, and PSM.

SURVIVIN POSITIVITY AND PROGNOSTIC FACTORS IN PAPILLARY THYROID CARCINOMAS.

Context: Papillary thyroid carcinoma(PTC)s are the indolent progressive tumours. Survivin is a unique bifunctional protein with cell cycle regulation and apoptosis inhibition. The expression of this protein has been shown to be increased in thyroid tumours correlated with aggressive behavior from well differentiated to anaplastic. Objective: In this study, we aimed to investigate the relationship between immunohistochemically survivin expression and tumour-associated prognostic factors in papillary thyroid carcinomas. Design: In patients with thyroidectomy, we compared the clinicopathological findings and immunohistochemical positivity for survivin. Subjects and Methods: In 109 patients, sex, age, tumour size, histological tumour variant, tumour focality, tumour border pattern, tumour peripheral/intratumoural lymphocytic and stromal response, intraglandular spread, extrathyroideal spread, lymph node metastases, lymphocytic tiroiditis and relationships of these findings with survivin positivity were investigated. Results: When we indicated the tumour size and compared it with survivin expression, tumour size correlates with, survivin expression (p = 0.016). Survivin expression was correlated statistically significant with lymphovascular invasion, without stromal response and with intraglandular extension respectively (p<0.001, p = 0.043, p<0.001). No significant correlation was found between other clinicopathological parameters and survival. Conclusion: Few studies have investigated the relationship of survivin expression with prognosis in thyroid papillary carcinomas and showed that survivin was a poor prognostic marker. If its expression is detected in preoperative cytology smears, it may affects the surgical treatment strategy. When it is detected in the tissue, postoperative radioactive iodine treatment plan may be modified and the need for more aggressive follow-up may be considered.

Características tumorales del cáncer de pulmón para predecir metástasis en los ganglios axilares / Tumor characteristics of lung cancer in predicting axillary lymph node metastases

Objetivo: En el cáncer de pulmón las metástasis en los ganglios axilares (MGA) son infrecuentes y, según la 8.ª edición del Sistema de estadificación, se clasifican como enfermedad metastásica M1b. El objetivo de este estudio es evaluar: 1) la presencia de MGA; y 2) el efecto de las características de los tumores primarios en el desarrollo de MGA. Métodos: Realizamos un estudio transversal descriptivo, con revisión retrospectiva, para identificar las MGA. Resultados: Incluimos en este análisis a 157 pacientes: MGA (63 pacientes) y grupo control (94 pacientes). La presencia de ganglios extratorácicos, metástasis contralaterales pulmonares parenquimatosas y distantes y todos los valores SUVmáx fueron significativamente más elevados en el grupo de estudio, en comparación con el grupo control (p<0,05). El valor SUVmáx del tumor primario no fue un factor predictivo de MGA. Con arreglo al diagnóstico histopatológico primario detectamos que el cáncer de pulmón de células pequeñas causaba el desarrollo de MGA en una proporción 3,4 veces mayor que el cáncer de células escamosas (OR: 3,4 [IC 95%: 1,3-10,2], p=0,029) y que el grupo de adenocarcinoma causaba el desarrollo de MGA en proporción 4 veces superior que el cáncer de células escamosas (OR: 4,02 [IC 95%: 1,73-9,34], p=0,001). La probabilidad de desarrollar MGA fue considerablemente superior en los tumores localizados en el lóbulo superior que en el lóbulo inferior. Conclusión: Tras el hallazgo de MGA en las imágenes PET/TC, la necesidad de confirmación histopatológica viene determinada con arreglo a los resultados de la localización del tumor primario, la histopatología de este, el estadio M en PET/TC, la localización de MGA con arreglo al tumor primario y el estadio N en PET/TC

Objective: In lung cancer, axillary lymph node metastases (ALM) are rare, and according to the 8th grading system, it is classified as M1b disease. The aim of this study is to evaluate1) the presence of ALM and2) the effect of the primary tumors characteristics on the development of ALM. Methods: We performed a descriptive cross-sectional study, with retrospective revision, to identify ALM. Results: There were 157 patients included in this analysis: ALM (63 patients) and control group (94 patients). The presence of extrathoracic lymph node, contralateral pulmonary parenchymal and distant metastasis and all SUVmax values were significantly higher in the study group versus the control group (P<0.05). The SUVmax value of the primary tumor was not a predictor of ALM. According to the primary histopathologic diagnosis, small cell lung cancer was found to cause ALM development 3.4 times as much as squamous cancer (SQC) (OR: 3.40 [95% CI 1.3-10.20], P=0.029) and adenocarcinoma group was found to cause ALM development 4 times as much as SQC (OR: 4.02 [95% CI 1.73-9.34], P=0.001). The likelihood of developing ALM was significantly higher in tumors located in the central and upper lobe versus the lower lobe. Conclusion: The finding of ALM on PET/CT images, the necessity of histopathologic confirmation is determined according to the results of primary tumor localization, primary tumor histopathology, M stage on PET/CT imaging, localization of ALM according to primary tumor, and N stage on PET/CT imaging

Tumor characteristics of lung cancer in predicting axillary lymph node metastases. / Características tumorales del cáncer de pulmón para predecir metástasis en los ganglios axilares.

OBJECTIVE: In lung cancer, axillary lymph node metastases (ALM) are rare, and according to the 8th grading system, it is classified as M1b disease. The aim of this study is to evaluate1) the presence of ALM and2) the effect of the primary tumors characteristics on the development of ALM. METHODS: We performed a descriptive cross-sectional study, with retrospective revision, to identify ALM. RESULTS: There were 157 patients included in this analysis: ALM (63 patients) and control group (94 patients). The presence of extrathoracic lymph node, contralateral pulmonary parenchymal and distant metastasis and all SUVmax values were significantly higher in the study group versus the control group (P<0.05). The SUVmax value of the primary tumor was not a predictor of ALM. According to the primary histopathologic diagnosis, small cell lung cancer was found to cause ALM development 3.4 times as much as squamous cancer (SQC) (OR: 3.40 [95% CI 1.3-10.20], P=0.029) and adenocarcinoma group was found to cause ALM development 4 times as much as SQC (OR: 4.02 [95% CI 1.73-9.34], P=0.001). The likelihood of developing ALM was significantly higher in tumors located in the central and upper lobe versus the lower lobe. CONCLUSION: The finding of ALM on PET/CT images, the necessity of histopathologic confirmation is determined according to the results of primary tumor localization, primary tumor histopathology, M stage on PET/CT imaging, localization of ALM according to primary tumor, and N stage on PET/CT imaging.

CLINICALLY UNDETECTABLE OCCULT THYROID PAPILLARY CARCINOMA PRESENTING WITH CERVICAL LYMPH NODE METASTASIS.

BACKGROUND: Occult papillary thyroid carcinoma presented as isolated cervical lymphadenopathy without clinical and radiologic findings has been rarely reported. CASE REPORT: A 47 years old female patient admitted to otorhinolaryngology clinic with 4X3 cm sized cervical mass. Physical examination of the patient was noted as a nontender, firm, mobile lymph node at right lateral cervical region. There was no inflammatory or infection disease in the history of patients anamnesis and no abnormal value on laboratory tests. Ultrasound screening of the neck detected a lymph node with suspicious features for malignancy. Head and neck examination was normal and there is no evidence of a tumoral mass or nodule in the thyroid gland. Whole body scan of MRI showed no pathologic sign both in the neck and body. Excisional biopsy was performed and revealed a carcinoma with papillary morphology. Immunohistochemical staining features of the tumor confirmed a papillary carcinoma derived from the thyroid gland. Second look USG of the neck and thyroid was performed but it revealed no tumoral mass. The patient underwent total thyroidectomy with right functional and central lymph node dissection. Histological examination of the thyroid gland showed multicentric 2 mm sized, three foci of papillary carcinoma located in bilateral thyroid lobes and metastatic lymph nodes in the right side of the neck. CONCLUSION: A metastatic cervical lymph node can be evidence of a clinically undetected occult papillary thyroid carcinoma. Specific immunohistochemistry staining of specimen may lead to appropriate surgery and progression of carcinoma may be hindered by application of additional RAI therapy.

The protective effects of Ginkgo biloba EGb761 extract against renal ischemia-reperfusion injury in rats.

OBJECTIVE: The aim of the study was to investigate the protective effects of Ginkgo biloba EGb761 extract on renal ischemia-reperfusion (I/R) injury in rats. MATERIALS AND METHODS: 26 male Wistar albino rats were divided into four groups: First group (n=6), which served as control received only standard pellet; second group (IR) (n=6) was subjected to renal I/R injury; a third group (Gb) (n=7) was given additional EGb761 extract; and rats in the fourth group (IR-Gb) (n=7) had been treated with EGb761 extract before they were subjected to I/R injury. After rats were euthanized, renal tissues were analyzed microscopically, and tissue malondyaldehyde (MDA), catalase (CAT), and superoxide dismutase (SOD) levels were determined. RESULTS: MDA values were significantly high in the IR group when compared with the other groups. No significant difference in MDA values between the Control and Gb groups was observed. SOD enzyme activity was significantly lower in the IR group when compared with other groups. Furthermore, SOD values were found to be comparable in control, Gb and IR-Gb groups. The CAT enzymatic activity was significantly low in the IR group when compared with the other groups. Moreover, although no statistical significance was identified between control group and Gb group, CAT levels in these groups were higher compared to IR-Gb group. Microscopic examination showed no histopathological differences between the control and Gb groups. Cast formation and tubular necrosis in the IR group have been determined to be significantly high when compared with IR-Gb group. We further observed that the histopathological changes in the IR-Gb group were lesser in the advanced levels when compared with the IR group. CONCLUSIONS: Ginkgo biloba Egb761 extract applied before renal ischemia-reperfusion decreases the tissue damage.

Symmetrical drug-related intertriginous and flexural exanthema induced by two different antibiotics

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