Pancreatic endocrine tumors (PETs) are uncommon tumors with an annual incidence <1 per 100 000 person-years in the general population. The PETs that produce hormones resulting in symptoms are designated as functional. The majority of PETs are non-functional. Of the functional tumors, insulinomas are the most common, followed by gastrinomas. The clinical course of patients with PETs is variable and depends on the extent of the disease and the treatment rendered. Patients with completely resected tumors generally have a good prognosis, and aggressive surgical therapy in patients with advanced disease may also prolong survival. The epidemiology, prognosis, and established and novel prognostic markers of PETs are reviewed.
You are looking at 1 - 4 of 4 items for
- Author: Thorvardur R Halfdanarson x
- Refine by Access: All content x
Thorvardur R Halfdanarson, Joseph Rubin, Michael B Farnell, Clive S Grant, and Gloria M Petersen
Alaa Sada, Travis J. McKenzie, Adrian Vella, Michael J Levy, and Thorvardur R Halfdanarson
Localized insulinoma is an uncommon entity that can result in substantial morbidity due the associated hypoglycemia. Recent studies have suggested an increase in the incidence of insulinoma in recent decades that may possibly be secondary to increased awareness, incidental diagnoses and better diagnostic methods. Diagnosing and localizing insulinoma within the pancreas can be challenging but advances in nuclear imaging may improve the diagnostic accuracy. Delays in diagnosis are common but once a localized insulinoma is diagnosed and appropriately treated, the long-term prognosis is excellent. Surgical resection is considered the standard of care management option for localized insulinoma but tumor ablation with endoscopic ultrasound guidance has also been shown to be an effective and safe method for therapy.
Mojun Zhu, Karl R Sorenson, Rebecca Liu, Bonnie E Gould Rothberg, and Thorvardur R Halfdanarson
Pancreatic neuroendocrine tumors (PNETs) encompass a diverse group of malignancies marked by histological heterogeneity and highly variable clinical outcomes. We performed a systematic review on potential prognostic biomarkers in PNETs by searching the PubMed database. A total of 472 manuscripts were reviewed in detail, of which 52 multivariate studies met the inclusion criteria proposed by the Reporting Recommendations for Tumor Marker Prognostic Studies. These altogether analyzed 53 unique targets, and 36 of them were statistically associated with survival.
Nicola Fazio, Lorenzo Gervaso, Thorvardur R Halfdanarson, Mohamad Sonbol, Rachel A Eiring, Sara Pusceddu, Natalie Prinzi, Benedetta Lombardi Stocchetti, Simona Grozinsky-Glasberg, David J. Gross, Thomas Walter, Patrick Robelin, Catherine Lombard-Bohas, Samuele Frassoni, Vincenzo Bagnardi, Lorenzo Antonuzzo, Clotilde Sparano, Sara Massironi, Fabio Gelsomino, Alberto Bongiovanni, Nicoletta Ranallo, Salvatore Tafuto, Maura Rossi, Mauro Cives, Kakil Ibrahim Rasul, Hytham Hamid, Alessandra Chirco, Michela Squadroni, Anna La Salvia, Jorge Hernando, Johannes Hofland, Anna Koumarianou, Sabrina Boselli, Darina Tamayo, Cristina Mazzon, Manila Rubino, and Francesca Spada
Preliminary results regarding 85 patients of the INTENSIVE study have been published in 2021. Now we are reporting the 2-year analysis. We conducted a retrospective/prospective worldwide study on patients with neuroendocrine neoplasms (NENs) and a molecularly proven SARS-CoV-2 positivity. Here we are reporting data from consecutive patients enrolled between June 01, 2020, and May 31, 2022. Among the 118 contacted centers, 25 were active to enroll and 19 actively recruiting at the time of data cut-off for a total of 280 patients enrolled. SARS-CoV-2 positivity occurred in 47.5% of patients in 2020, 35.1% in 2021 and 17.4% in 2022. Median age at COVID-19 diagnosis was 60 years. Well differentiated tumors, non-functioning, metastatic stage and gastroenteropancreatic (GEP) primary site represented most of NENs. COVID-19-related pneumonia occurred in 22.8% of the total, with 61.3% of them requiring hospitalization; 11 patients (3.9%) needed sub-intensive or intensive care unit therapies and 14 patients died (5%), in 11 cases (3.9%) directly related to COVID-19. Thoracic and other NEN primary site were associated with hospitalization for COVID-19 and with sub-intensive or intensive care. A significant decrease in both hospitalization and pneumonia occurred in 2022 versus 2020. In our largest series of NEN patients with COVID-19, the NEN population is similar to the general population regardless of COVID-19. However, older age, non-GEP primary sites and diabetes mellitus should be carefully considered for increased COVID-19 morbidity and mortality. Relevant information could be derived by integrating our results with NENs patients included in other cancer patients and COVID-19 registries.