Aim:To determine the correlation between the results of thyroid fine-needle aspirations interpreted using the Bethesda system and final histopathological reports for patients at an oncology hospital (OH) and non-oncology hospitals (NOHs).Materials and Methods:A retrospective, cross-sectional, descriptive study was performed to compare the cytology and histopathology results for patients with thyroid nodules in three Colombian hospitals. The final correlation of diagnoses between the two methods is reported. In Colombia, the health system provides the existence of general care hospitals and hospitals specializing in care of patients with cancer.Results:A total of 196 reports were reviewed, of which 53% were from OH and 47% were from NOHs. A greater proportion of category V (37.5%) was diagnosed at the OH, whereas NOHs diagnosed a greater proportion of category II (42.3%). The global correlation between diagnoses made using cytology and histopathology was 93.3% for categories V and VI (based on the final malignant diagnosis) and 86.9% for benign category II. Significant differences between institution types were observed when category IV and V and malignant histopathology were compared (56.3% OH vs. 23.5% NOH; P = 0.05 for category IV, 97.4% OH vs. 82.3% NOH; P = 0.03 for category V), while no significant difference between institution types was observed when category II and final benign diagnosis were compared (P = 0.6).Conclusions:The Bethesda system for thyroid cytology correlates adequately with final histopathological diagnosis in Colombia. Significant differences were identified in the diagnostic correlation for malignant lesions between the OH and NOHs in categories IV and V caused by selection bias of the population.

SummaryPrimary signet-ring cell adenocarcinoma of the urinary bladder is a rare tumor. We report in this study the case of a 53 year old man consulting for gross hematuria. Computed tomography imaging demonstrated right hydronephrosis and an invasive bladder tumor. The bladder biopsy showed a signetring cell carcinoma; the exploration of the gastrointestinal tract did nor reveal any other tumor localization. A total cystoprostatectomy was performed followed by adjuvant chemotherapy with cisplatin and gemcitabine. The aim of this study is to determine the anatomoclinical, therapeutic and evolutionary characteristics of this rare tumor.

Introduction: Rhabdomyomas are benign tumors of striated muscle, the bladder localization is very rare. Clinical Case: We present an 87-year-old male consulting for gross hematuria. Cystoscopy was done with evidence of bulged bladder mucosa in right side wall and dome. Post-transurethral resection of the bladder (TURB) pathological anatomy was negative for malignancy. As extension study abdominopelvic computed tomography was performed identifying a bladder thickening of right posterior sidewall and an increased density of the adjacent fat. Second TURB was performed and a fetal bladder rhabdomyoma intermediate type was obtained. We performed another biopsy to confirm this rare pathology, with the same diagnosis. Subsequently, the patient continues with hematuria deciding on hemostatic radiotherapy (not candidate for cystectomy or arterial embolization). Currently, the patient is asymptomatic. Discussion: Bladder rhabdomyomas are rare tumors, and, in fact, there have been only 5 papers published. Some cases are only isolation cited in the bladder mesenchymal tumors, and other polemic cases in which clinical and macroscopic characteristics remembered a rhabdomyosarcoma. The importance of this publication case is the macro- and microscopic images that can corroborate the final diagnosis, helping us to differentiate between rhabdomyoma, rhabdomyofibroma, or the malignant rhabdomyosarcoma, and shows the treatment possibilities of these tumors.

The study reports a case of a 57-year-old female patient with incidental right adrenal lipoma (LA). The tumor was detected by ultrasound (US) and confirmed by computed tomography (CT). Due to the size of the mass, it was decided to perform a laparoscopic adrenalectomy. During the differential microscopic diagnosis, were considered adrenal lipomatous tumors, myelolipoma, angiomyolipoma and teratomas, among others. In all these neoplasms, LA is a rare tumor, with only 24 cases reported in the anglo-saxon literature revised. It is a benign adrenal gland tumor with generally asymptomatic and non-functioning nature.