Objective: to determine surgical prognostic variables from a retrospective cohort of histopathologically confirmed gastroenteropancreatic neuroendocrine tumors (GEP-NET) in Mexican subjects.
Methods: consecutive patients treated for GEP-NET from 1999 through 2007 at Oncological Hospital were included. Demographic, clinical variables, disease-free survival were retrieved.
Results: forty-eight patients were included, 29 (60.4 %) female with a mean age of 54 years. Overall survival time was 43.7 months and disease-free survival was 33 months. Negative statistically significant overall survival time predictors were 2 and 3 histological types (HR 5.5. CI 2.0-21, p = 0.0001), tumor size > 2 cm (HR 8.8, CI 1 .29-75, p = 0.002), the presence of metastasis (HR 2.4, CI 1.2-9.6, p = 0.0001) and tumor resectability (HR 9.8, CI 2.9-40.2, p = 0.0001). For the disease-free period, only the histological type (2 or 3) was a negative outcome variable.
Conclusions: histological type, tumor size, the presence of metastasis, and tumor non resectability were significant survival predictors.
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Eur J Endocrinol
January 2025
Department of Internal Medicine IV, LMU University Hospital, LMU Munich, 80336 Munich, Germany.
Objective: The effects of sex hormones remain largely unexplored in pheochromocytomas and paragangliomas (PPGLs) and gastroenteropancreatic neuroendocrine tumors (GEP-NETs).
Methods: We evaluated the effects of estradiol, progesterone, Dehydroepiandrosterone sulfate (DHEAS), and testosterone on human patient-derived PPGL/GEP-NET primary culture cell viability (n = 38/n = 12), performed next-generation sequencing and immunohistochemical hormone receptor analysis in patient-derived PPGL tumor tissues (n = 36).
Results: In PPGLs, estradiol and progesterone (1 µm) demonstrated overall significant antitumor effects with the strongest efficacy in PPGLs with NF1 (cluster 2) pathogenic variants.
Cancers (Basel)
December 2024
Department of Medical and Molecular Biology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 19 Jordana St., 41-808 Zabrze, Poland.
Neuroendocrine tumors are a diverse group of tumors predominantly found in the gastrointestinal tract or respiratory system. : This retrospective study aimed to measure the serum concentrations of LRP6 (low-density lipoprotein receptor-related protein 6), SFRP3 (secreted frizzled-related protein 3), and DVL1 (segment polarity protein dishevelled homolog) using the ELISA method in patients with NETs (N = 80) and a control group (N = 62). We evaluated the results against various demographic, clinicopathological, and biochemical characteristics.
View Article and Find Full Text PDFJ Nucl Med
January 2025
Department of Nuclear Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
Lu-DOTATATE has emerged as a viable treatment strategy for advanced well-differentiated grade 1/2 gastroenteropancreatic neuroendocrine tumors (GEP-NETs). Few retrospective studies have shown concomitant Lu-DOTATATE with radiosensitizing low-dose capecitabine to be effective in advanced NETs. However, this has not been validated in prospective randomized-controlled trials.
View Article and Find Full Text PDFDiagnostics (Basel)
December 2024
Department of Surgery, School of Medicine, Acıbadem Mehmet Ali Aydınlar University, 34752 Istanbul, Turkey.
Background: Somatostatin receptors (SSTRs) are expressed in most neuroendocrine neoplasms, particularly in gastroenteropancreatic neuroendocrine tumours, and have been utilised as diagnostic markers and therapeutic targets. The radioiodinated somatostatin analogue 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid- Tyr3-octreotate (DOTATATE) has been employed for SSTR targeting for either diagnostic or therapeutic purposes depending on the labelling with Gallium or Lutetium, respectively. SSTR expression is reported in a subset of breast adenocarcinoma and breast neuroendocrine carcinomas; however, minimal knowledge exists regarding their expression in fibroepithelial (biphasic) breast lesions such as fibroadenoma and phyllodes tumours.
View Article and Find Full Text PDFClin Nucl Med
January 2025
From the Department of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, India.
Purpose: This study aimed to assess the biodistribution and radiation dosimetry of 68Ga-DATA5m LM4 in patients with gastroenteropancreatic neuroendocrine tumors.
Patients And Methods: Eight patients (5 females and 3 males) with various gastroenteropancreatic neuroendocrine tumors were included in the study. Each patient underwent 3 whole-body PET scans at 10, 60, and 120 minutes after receiving an IV injection of approximately 162.
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