Prevalência de rastreio positivo para síndrome de Cushing em indivíduos obesos candidatos ao tratamento cirúrgico para obesidade / Prevalence of positive screening for Cushing's syndrome in obese indivi-duals who are candidates for bariatric surgery

Introdução: A obesidade afeta mais de um terço dos norte-americanos e sua prevalência está aumentando nos brasileiros. Em casos graves, a cirurgia bariátrica é considerada o tratamento mais bem-sucedido e duradouro. Durante a avaliação pré operatória, deve-se investigar causas secundárias de obesidade e, especificamente no Brasil, deve-se excluir síndrome de Cushing (SC) nesses pacientes, apesar de recomendações controversas de rastreio de SC em diretrizes atuais. A prevalência de SC endógena é extremamente baixa, mas parece ser maior em populações específicas, como pacientes diabéticos, com hipertensão resistente, ou portadores de obesidade Objetivo: Avaliar a prevalência de triagem positiva para SC em obesos candidatos a cirurgia bariátrica e discutir possíveis fatores de risco ou co-morbidades associadas à positividade do rastreio. Material e Métodos: Estudo retrospectivo com 629 pacientes atendidos no ambulatório de obesidade da Santa Casa de Belo Horizonte entre 2008 e 2016. Realizada a triagem da SC com o teste de supressão noturna com 1mg de dexametasona (1mg-DST), dosando o cortisol na manhã seguinte (ponto de corte ≥1,8µg/dL). Resultados: 80 dos 629 pacientes apresentaram rastreio positivo para SC. Destes, 20 pacientes foram considerados negativos após repetirem o 1mg-DST e 6 pacientes foram negativos após o teste Liddle 1. Conclusão: A prevalência de rastreio positivo para SC foi igual a 12,7%, semelhante aos dados da literatura. Nenhum fator de risco ou co-morbidade pôde ser diretamente associado à positividade do teste de rastreamento.

Introduction: Obesity affects more than a third of Americans and its prevalence is increasing in Brazilians. In severe cases, bariatric surgery is considered the most successful and long-lasting treatment. During the preoperative evaluation, secondary causes of obesity should be investigated and, specifically in Brazil, Cushing's Syndrome (CS) should be excluded in these patients, despite controversial recommendations for CS screening in current guidelines. The prevalence of endogenous SC is extremely low, but appears to be higher in specific populations, such as diabetics, patients with resistant hypertension or those with obesity. Aim: To evaluate the prevalence of positive screening for CS in obese candidates for bariatric surgery and to discuss possible risk factors or comorbidities associated with screening positivity. Material and Methods: A retrospective study was conducted with 629 patients attended at the Obesity Outpatient Clinic of Santa Casa, Belo Horizonte between 2008 and 2016. CS screening was performed with a 1mg dexamethasone (1mg-DST) suppression test, dosing cortisol in the next morning (cut-off point ≥1.8µg / dL). Results:80 of the 629 patients had positive screening for SC. Of these, 20 patients were considered negative after repeated 1mg-DST and 6 patients were negative after the Liddle 1 test. Conclusion: The prevalence of positive screening for SC was 12.7%, similar to the literature. No risk factor or co-morbidity could be directly associated with the positivity of the screening test.

Carcinoma de paratireoide: um relato de caso / Parathyroid carcinoma: case report

O carcinoma de paratireoide (CP) constitui entidade patológica incomum e detentora de peculiaridades propedêutico-terapêuticas. Em geral, apresenta-se como hiperparatireoidismo primário sintomático, no qual corresponde a somente 1% nesse subgrupo. O diagnóstico de CP é difícil, tanto clínico quanto histológico, devido à inconstância de critérios. Laboratorialmente, é comum apresentar hipercalcemia e PTH bastante acima do valor de referência. A cirurgia é o único tratamento curativo e efetivo para o carcinoma de paratireoide. Relato de caso: Paciente M.P.R.L., 48 anos, sexo feminino, melanodérmica, natural e procedente de Felisburgo ­ MG. Evoluíra há 02 anos com fraqueza progressiva, anemia, disfunção renal, dores crônicas e perda ponderal (cerca de 15 kg nos últimos cinco meses), associada a hipercalcemia PTH-dependente e declínio da função renal. Estudo ultrassonográfico (USG) de região cervical demonstrou presença de dois nódulos tireoideanos e cintilografia de paratireoides sem evidências de hiperplasia ou adenoma das glândulas. Foi admitida no Hospital Santa Casa de Belo Horizonte para seguimento propedêutico e terapêutico do quadro apresentado (AU)

Parathyroid carcinoma (PC) is an uncommon pathology which has propaedeutic and therapeutic peculiarities. In general, it presents as symptomatic primary hyperparathyroidism, that corresponds to only 1% in this subgroup. Both the clinical and histological diagnosis of PC are difficult due to inconsistent criteria. Laboratorial exams commonly present hypercalcemia and PTH well-above the reference value. Surgery is the only curative and effective treatment for parathyroid carcinoma. Case report: Patient M.P.R.L., 48 years old, female, melanodermic, native and from Felisburgo - MG. The disease had been progressing for 2 years with progressive weakness, anemia, renal dysfunction, chronic pain and weight loss (about 15 kg in last five months), associated with PTH-dependent hypercalcemia and renal function decline. A cervical study showed the presence of two thyroid nodules whereas a parathyroid scintigraphy showed no evidence of glands hyperplasia or adenoma. She was admitted to the Santa Casa Hospital of Belo Horizonte for a propaedeutic and therapeutic management of the presented profile. (AU)

Evaluation of inflammatory activity in Crohn's disease and ulcerative colitis.

Crohn's disease and ulcerative colitis evolve with a relapsing and remitting course. Determination of inflammatory state is crucial for the assessment of disease activity and for tailoring therapy. However, no simple diagnostic test for monitoring intestinal inflammation is available. Noninvasive markers give only indirect assessments of disease activity. Histopathological or endoscopical examinations accurately assess inflammatory activity, but they are invasive, time consuming and expensive and therefore are unsuitable for routine use. Imaging procedures are not applicable for ulcerative colitis. The usefulness of ultrasound and Doppler imaging in assessing disease activity is still a matter of discussion for Crohn's disease, and an increased interest in computed tomography enterograph (CTE) has been seen, mainly because it can delineate the extent and severity of bowel wall inflammation, besides detecting extraluminal findings. Until now, the available data concerning the accuracy of magnetic resonance enterography in detecting disease activity is less than CTE. Due to this, clinical activity indices are still commonly used for both diseases.