Publications by authors named "Alessandro Poletti"

Background: During follow-up for patients with medullary thyroid cancer (MTC), the levels of serum calcitonin and carcinoembryonic antigen are important, and the doubling time of these biomarkers significantly correlates with disease progression. Other antigens are present in tumor tissue and the sera of patients with MTC, but there are scarce published data on the serum levels of carbohydrate antigen 19-9 (Ca 19-9), a tumor marker primarily used for the diagnosis and follow-up of pancreatic and gastrointestinal neoplasias. Recently, the case of a 56-year-old woman with multiple endocrine neoplasia type 2B with high serum levels of Ca 19-9 was reported; this patient experienced rapid disease progression that led to her death.

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Cancer stem cells (CSCs) are proposed to drive tumor initiation and progression. Yet, our understanding of the cellular and molecular mechanisms that underlie CSC properties is limited. Here we show that the activity of TAZ, a transducer of the Hippo pathway, is required to sustain self-renewal and tumor-initiation capacities in breast CSCs.

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Colitis cystica profunda is a rare intestinal lesion. Because of its clinical expression (rectorrhagia, mucorrhea and abdominal pain) and the way it appears to current imaging techniques this disease presents features which can be associated with colon neoplasm. Its diagnosis has to be confirmed histologically, and its etiology remains unclear.

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The aim of this study was to evaluate the morphometric changes of adipose tissue of lean and obese rats as assessed by computerized image analysis (IA) system in experimental conditions, with different degrees of adiposity. Moreover, to validate measures obtained by image analysis by correlation with direct measures of adiposity (body weight, epididimal fat, mean fat cell size and serum leptin). Finally to correlate these changes to expression of genes involved in lipid deposition and mobilization in adipose tissue.

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Non-disseminated malignant lymphomas of salivary glands occurring in association with Warthin's tumour have rarely been reported. We describe the first case of association of an extranodal mucosa-associated lymphoid tissue (MALT)-type non-Hodgkin's lymphoma with Warthin's tumour of the parotid gland. Total parotidectomy with preservation of the facial nerve was performed.

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Primary tumours metastasizing to the tongue are very unusual and only anecdotal cases have been reported. An exhaustive literature review covering the period from 1970 onwards disclosed only 22 cases of renal adenocarcinoma metastasizing to the tongue. We report the case of an 87-year-old female patient with oral tongue, lung, liver, thyroid gland, pancreas and renal adenocarcinoma metastases.

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