Endocrine Abstracts

Introduction: In patients with ACTH-dependent Cushing Syndrome, differentiating between pituitary and ectopic sources can be challenging. Noninvasive testing can be performed, but bilateral inferior petrosal sinus sampling (BIPSS) remains the gold standard. In the last years however, novel imaging modalities, namely 3T-MRI with 3-dimensional spoiled gradient-echo sequence and 68Ga-tagged CRH combined with positron emission tomography, have been proposed as alternatives.<p ...

Introduction: Acromegaly is a rare disease with significant morbidity and mortality. Surgical treatment is the first line treatment for these patients, with remission rates of >85% for microadenomas and 40–50% for macroadenomas.Objectives: Our objective was to characterize patients with acromegaly followed in our department and evaluate remission status after surgery. We also aimed to determine remission related factors.Me...

Introduction: Pheochromocytomas/paragangliomas are rare neuroendocrine tumors. Although mostly sporadic, about 1/3 of the cases correspond to inherited autosomal dominant syndromes, often associated with germline mutations of the SDHD, SDHC and SDHB genes. The association with the SDHAF2(SDH5) gene has been recently discovered, with only few cases published worldwide, and it presents as a paraganglioma of the head and neck, without previous known description of other locations...

Introduction: The best timing for PRRT (peptide receptor radionuclide therapy) in the case of pancreatic neuroendocrine tumors (panNETs) is still to define, as randomized prospective trials are lacking. Recent studies suggest that some systemic therapies can affect response to PRRT, favoring an earlier use of the latter.Objective: To determine the efficacy and toxicity of PRRT, comparing its results when used as a second line systemic therapy (a...

Neuroendocrine neoplasms (NENs) arise from specialized cells called neuroendocrine cells spread through the body, mainly in the gastrointestinal tract, pancreas and lung. Pathological classification of Lung NENs include well differentiated NENs, that can be classified as typical or atypical carcinoids, and poorly differentiated neuroendocrine carcinomas (NECs), classified as small-cell lung carcinoma (SC-NEC) or large-cell neuroendocrine carcinoma (LC-NEC). We present a case o...

Introduction: Malignant pheocromocytomas are rare. Metastatic disease may be present at the time of diagnosis or may only be evident after. Prognosis is poor. Currently there is no effective cure.Case report: We describe the case of a 66-year-old woman with a history of pheocromocytoma submitted to left adrenalectomy in 1992. In the past 10 years, she complained of episodes of dorsal back pain associated with hypertensive peaks and tachycardia. In 4/2010...

Brown tumor (BT) is a rare bony benign lesion caused by excess osteoclast activity and hemosiderin deposition because of uncontrolled primary or secondary hyperparathyroidism. 71-year-old man with no significant pathological history, twelve months before admission presented with growing mandibular brown tumor and bone pain in lower limbs. He was referred to Endocrinology unit. Physical examination found left facial paralysis, absence of horizontal branches and left jaw ascendi...

Maternal obesity during pregnancy is associated with several metabolic impairments in offspring, some of them evidenced from early infancy. Some reports have demonstrated that offspring of obese rats, whose obesity was induced by high fat diet consumption, have an increase sympathetic tone and increased norepinephrine (NE) content in kidney, liver and ovary. We recently reported that maternal administration of metformin prevents the increase in ovarian NE in offspring when the...

Hair loss after surgical treatment for acromegaly has been rarely described. We report a case of a patient with acromegaly that presented with hair loss after surgical treatment.We describe a case of a 73-year female that was diagnosed with acromegaly. Transesphenoidal surgery was performed with complete tumour resection and no immediate complications. Postoperative IGF -1, GH and OGTT for GH were measured at 12 weeks confirming biochemical remission. Th...

Differentiated thyroid carcinoma is the most common endocrine malignant tumor. Papillary carcinoma frequency in our country is 80% of thyroid neoplasia. Papillary thyroid carcinoma usually metastasizes to cervical lymph. Metastases to distant organs are rare and most often affect the lungs, liver and bones. Despite of its anatomical proximity, metastasis parotid have not been described in the existing papillary carcinomas literature. We report a case of parotid gland metastasi...