Características clínicas y metabólicas de síndrome de ovario poliquístico en la ciudad de Temuco / Clinical and metabolic characteristics of polycystic ovary syndrome in the city of Temuco

Polycystic Ovarian Syndrome (PCOS) is the most common endocrine disorder, its etiologyis multifactorial. It is associated with multiple metabolic abnormalities. Objective: To evaluate statistical association between the clinical characteristics of patients diagnosed with PCOS. Patients and Methods: Descriptive study, 121 patients between 13 and 44 years with PCOS were included, and their clinical characteristics, blood glucose, insulin, lipid profile and calculated HOMA were evaluated. Data was analyzed with Chi2, considering p < 0.05 as statistically significant. Results: Mean age 25,5 years, 12,5 years menarche. 22 percent with a history of abortion. Mean BMI 31,4. Acanthosis nigricans was presented in 58,6 percent. Average Glucose 96,5 mg/dl. Insulin resistance (IR) was found in 79.3 percent. Average HOMA 4,5. 64 percent of patients with IR presented Acanthosis nigricans (p = 0.002).It showed direct relationship between BMI and RI (p 0.000). 38,8 percent had dysglycemia. RI was found in 78,7 percent of patients with dysglycemia (p 0.8). Lipid profile was measured in 78 patients, of whom 40 percent had total cholesterol above 200 mg/dl, 49 percent hypertriglyceridemia and high LDL in 13 percent of cases. Conclusions: The data reported are similar to those reported in the international literature. Ourpopulation has obesity and dyslipidemia figures higher than those reported in national studies. The menarche occurs at a younger age while the prevalence of dyslipidemia and RI is greater than the general population, forming a higher risk group...

Early parathyroid MIBI SPECT imaging in the diagnosis of persistent hyperparathyroidism.

We present a case that demonstrates the utility of early SPECT images associated with fusion images with MRI for presurgical localization in a case of persistent hyperparathyroidism after a first surgery. Three years after that surgery, severe hypercalcemia (14.7 mg/dL) and elevated parathormone (PTH) (944 pg/mL) were detected. MRI and SPECT parathyroid scintigraphy showed an abnormal parathyroid lesion localized behind the inferior pole of the thyroid right lobe. At surgical reexploration a right inferior parathyroid adenoma was removed (258 mg). However, intraoperative PTH remained high and a total thyroidectomy was performed looking for an intrathyroid lesion. After that, the elevated PTH persisted and an ectopic parathyroid gland was identified in the tracheoesophageal groove (958 mg), corresponding with the lesion seen on the fusion image of MRI and SPECT. After removal of this lesion, the PTH dropped to 85%.

Características de presentación del microcarcinoma papilar del tiroides. Experiencia retrospectiva de los últimos 12 años / Pathological characteristics of thyroid microcarcinoma. A review of 402 biopsies

Background: Thyroid microcarcinoma is a tumor of 10 mm or less, that should have a low risk of mortality. However, a subgroup of these carcinomas is as aggressive as bigger tumors. Aim: To describe the pathological presentation of these tumors, and compare them with larger tumors. Material and methods: All pathological samples of thyroid carcinoma that were obtained between 1992 and 2003, were studied. In all biopsies, the pathological type, tumor size, the focal or multifocal character, the presence of lymph node involvement and the presence of lymphocytic thyroiditis or thyroid hyperplasia, were recorded. Results: One hundred eighteen microcarcinomas and 284 larger tumors were studied. The mean age of patients with microcarcinoma and larger tumors was 42.7±14 and 49.3±16 years respectively (p <0,001) and 83% were female, without gender differences between tumor types. Mean size of microcarcinomas was 8.6 mm and 116 (98%) were papillary carcinomas. Of these, 109 (94%) were well differentiated and seven (6%) were moderately differentiated. Thirty six (31%) were multifocal and in 10 (8,6%), there was lymph node involvement. The mean size of larger tumors was 23.8 mm and 241 (85%) were papillary carcinomas. Of these, 200 (83%) were well differentiated, and 41 (17%) were moderately differentiated. Eighty five (35%) were multifocal and in 44 (18%) there was lymph node involvement. The prevalence of thyroiditis and hyperplasia was significantly higher among microcarcinomas than in larger tumors (15 and 2.5%, respectively, p <0.001, for the former; 32.4 and 1.7%, respectively, p <0.001, for the latter). Conclusions: In this series, one third of microcarcinomas were multifocal and 10% had lymph node involvement. Therefore, the aggressiveness of these tumors is higher than what is reported in the literature and they should be treated with total thyroidectomy.

Microcarcinoma tiroideo de evolución agresiva: Report of one case / Thyroid microcarcinoma with an aggressive evolution

The treatment of papillary thyroid carcinoma of less than 10 mm diameter is a matter of controversy. The incidental finding of papillary microcarcinomas in autopsies is frequent and some authors postulate that these tumors are biologically inactive and should only be observed. We report a 21 years old woman with a papillary thyroid cancer of 6x5x5 mm and bilateral paratracheal metastases, that was subjected to a total thyroidectomy. She received 200 mCi of radioiodine. Two years after surgery, a new nodule of 9.6 mm diameter was detected by ultrasound, that was treated with a new dose of 200 mCi of radioiodine. One year later a suprasternal mass of 2 cm diameter and 3 enlarged lymph nodes were detected. She was subjected to a surgical lymph node dissection of the neck and the biopsy confirmed the presence of cancer. She received a new dose of 300 mCi of radioiodine. The mother of the patient had a 7 mm thyroid nodule that was also a papillary carcinoma.