Is long-term follow-up solely by imaging tests safe in non-operated pancreatic neuroendocrine tumors?

INTRODUCTION: the diagnosis of asymptomatic sporadic nonfunctioning pancreatic neuroendocrine tumors (NF-PNETs) has increased significantly due to the widespread use of high-resolution imaging tests, which is why the most appropriate management at the time of diagnosis is the subject of debate, as is how to follow-up patients. AIMS: the objective of this study was to analyze the frequency of imaging and endoscopic studies performed during long-term follow-up. METHODS: a retrospective review was performed of a database collected between January 2008 and December 2020 of patients with an incidental diagnosis of small NF-PNETs; follow-up was closed in March 2023. The imaging tests performed at the time of diagnosis and long-term follow-up were recorded. Growing less than 1 mm per year has not been considered as a worrisome feature. Follow-up was performed through imaging tests, considering endoscopic cytology for lesions with a faster grow rate. RESULTS: fifty-eight patients were included; the median age was 69 years. The initial mean size of the lesions studied was 12.79 mm (5-27). Follow-up was carried out only with computed tomography (CT) or magnetic resonance imaging (MRI). The initial size did not influence the behavior of the lesion in a statistically significant manner. Twenty-eight tumors (45 %) increased in size, with a growth equal to or less than 4 mm in 24 cases. The mean follow-up time was 82.41 months (12-164). No patient developed metastasis or died from PNET progression. CONCLUSIONS: the follow-up of neuroendocrine tumors of small size can be performed safely with only imaging tests.

"Hemosuccus pancreaticus:" an uncommon form of presentation of pancreatic intraductal papillary mucinous neoplasm.

"Hemosuccus pancreaticus" (HP), "wirsungorrhagia" or "pseudohemobilia" is a rare cause of upper gastrointestinal bleeding consisting of blood loss along the duct of Wirsung with exteriorization through the ampulla of Vater. Due to its rarity, the literature on HP is limited to retrospective studies, case reports, and case series.

Hypoalbuminemia and advanced age are risk factors for delayed gastric emptying after pancreaticoduodenectomy.

Introduction: Background: delayed gastric emptying (DGE) is one of the most common complications after pancreatoduodenectomy. It could be related to some baseline patient-related characteristics. This study aims to assess the predictive factors associated to DGE in the cohort of patients included in the PAUDA clinical trial. Methods: this study was a retrospective analysis based on the 80 patients included in a randomized clinical trial conducted and published by our group. A descriptive analysis and a bivariate regression model were carried out. Some factors were further scrutinized for associations using the Pearson correlation coefficient and, finally, a multiple regression model using a stepwise selection of variables was conducted. Results: DGE was diagnosed in 36 (45 %) out of 80 patients (DGE group). The number of patients older than 60 years old in the DGE group was greater than in the group without DGE (32 vs 28 patients, p = 0.009]. Likewise, the number of patients with a preoperative albumin < 35 g/L (18 vs 11 patients, p = 0.036); preoperative bilirubin > 200 µmol/L (14 vs 8 patients, p = 0.039); postoperative haemorrhage (7 vs 1 patients, p = 0.011); postoperative intraabdominal abscess (12 vs 5 patients, p = 0.017); and postoperative biliary fistula (5 vs 0 patients, p = 0.011), was also greater in the DGE group. Two risk factors were associated with DGE: the patient's age at the time of surgery and preoperative hypoalbuminemia (serum albumin concentration ≤ 35g/L). Conclusions: the patient's age at the time of surgery and the preoperative nutritional status are independent risk factors to the development of DGE after pancreatoduodenectomy.

Introducción: Introducción: el vaciamiento gástrico lento (VGL) es una complicación frecuente tras la duodenopancreatectomía cefálica (DPC) y puede relacionarse con algunas características basales del paciente. El objetivo es evaluar los factores predictivos de VGL en la cohorte de pacientes incluidos en el ensayo clínico aleatorizado PAUDA. Métodos: se realizó un análisis retrospectivo basado en los 80 pacientes incluidos en el ensayo PAUDA. Se realizaron un análisis descriptivo y un modelo de regresión bivariante. Posteriormente, algunos factores se examinaron mediante el coeficiente de correlación de Pearson y, finalmente, se llevó a cabo un modelo de regresión multivariante. Resultados: se diagnosticó VGL en 36 (45 %) pacientes. El número de pacientes mayores de 60 años en el grupo VGL fue mayor que en el grupo sin VGL (p = 0,009). El número de pacientes con albúmina preoperatoria < 35 g/L (p = 0,036); bilirrubina preoperatoria > 200 µmol/L (p = 0,039); hemorragia (p = 0,011); absceso intraabdominal (p = 0,017); y fístula biliar (p = 0,011), fue mayor en el grupo VGL. Dos factores de riesgo se asociaron con el VGL: la edad del paciente y la hipoalbuminemia preoperatoria. Conclusiones: la edad del paciente en el momento de la cirugía y el estado nutricional preoperatorio son factores de riesgo independientes de VGL tras DPC.

Hypoalbuminemia and advanced age are risk factors for delayed gastric emptying after pancreaticoduodenectomy / La hipoalbuminemia y la edad avanzada son factores de riesgo de vaciamiento gástrico lento tras duodenopancreatectomía cefálica

Background: delayed gastric emptying (DGE) is one of the most common complications after pancreatoduodenectomy. It could be related to some baseline patient-related characteristics. This study aims to assess the predictive factors associated to DGE in the cohort of patients included in the PAUDA clinical trial. Methods: this study was a retrospective analysis based on the 80 patients included in a randomized clinical trial conducted and published by our group. A descriptive analysis and a bivariate regression model were carried out. Some factors were further scrutinized for associations using the Pearson correlation coefficient and, finally, a multiple regression model using a stepwise selection of variables was conducted. Results: DGE was diagnosed in 36 (45 %) out of 80 patients (DGE group). The number of patients older than 60 years old in the DGE group was greater than in the group without DGE (32 vs 28 patients, p = 0.009]. Likewise, the number of patients with a preoperative albumin < 35 g/L (18 vs 11 patients, p = 0.036); preoperative bilirubin > 200 µmol/L (14 vs 8 patients, p = 0.039); postoperative haemorrhage (7 vs 1 patients, p = 0.011); postoperative intraabdominal abscess (12 vs 5 patients, p = 0.017); and postoperative biliary fistula (5 vs 0 patients, p = 0.011), was also greater in the DGE group. Two risk factors were associated with DGE: the patient's age at the time of surgery and preoperative hypoalbuminemia (serum albumin concentration ≤ 35g/L). Conclusions: the patient's age at the time of surgery and the preoperative nutritional status are independent risk factors to the development of DGE after pancreatoduodenectomy. (AU)

Introducción: el vaciamiento gástrico lento (VGL) es una complicación frecuente tras la duodenopancreatectomía cefálica (DPC) y puede relacionarse con algunas características basales del paciente. El objetivo es evaluar los factores predictivos de VGL en la cohorte de pacientes incluidos en el ensayo clínico aleatorizado PAUDA. Métodos: se realizó un análisis retrospectivo basado en los 80 pacientes incluidos en el ensayo PAUDA. Se realizaron un análisis descriptivo y un modelo de regresión bivariante. Posteriormente, algunos factores se examinaron mediante el coeficiente de correlación de Pearson y, finalmente, se llevó a cabo un modelo de regresión multivariante. Resultados: se diagnosticó VGL en 36 (45 %) pacientes. El número de pacientes mayores de 60 años en el grupo VGL fue mayor que en el grupo sin VGL (p = 0,009). El número de pacientes con albúmina preoperatoria < 35 g/L (p = 0,036); bilirrubina preoperatoria > 200 µmol/L (p = 0,039); hemorragia (p = 0,011); absceso intraabdominal (p = 0,017); y fístula biliar (p = 0,011), fue mayor en el grupo VGL. Dos factores de riesgo se asociaron con el VGL: la edad del paciente y la hipoalbuminemia preoperatoria. Conclusiones: la edad del paciente en el momento de la cirugía y el estado nutricional preoperatorio son factores de riesgo independientes de VGL tras DPC. (AU)

Is long-term follow-up solely by imaging tests safe in non-operated pancreatic neuroendocrine tumors?

Introduction: the diagnosis of asymptomatic sporadic nonfunctioning pancreatic neuroendocrine tumors (NF-PNETs) has increased significantly due to the widespread use of high-resolution imaging tests, which is why the most appropriate management at the time of diagnosis is the subject of debate, as is how to follow-up patients. Aims: the objective of this study was to analyze the frequency of imaging and endoscopic studies performed during long-term follow-up. Methods: a retrospective review was performed of a database collected between January 2008 and December 2020 of patients with an incidental diagnosis of small NF-PNETs; follow-up was closed in March 2023. The imaging tests performed at the time of diagnosis and long-term follow-up were recorded. Growing less than 1 mm per year has not been considered as a worrisome feature. Follow-up was performed through imaging tests, considering endoscopic cytology for lesions with a faster grow rate. Results: fifty-eight patients were included; the median age was 69 years. The initial mean size of the lesions studied was 12.79 mm (5-27). Follow-up was carried out only with computed tomography (CT) or magnetic resonance imaging (MRI). The initial size did not influence the behavior of the lesion in a statistically significant manner. Twenty-eight tumors (45 %) increased in size, with a growth equal to or less than 4 mm in 24 cases. The mean follow-up time was 82.41 months (12-164). No patient developed metastasis or died from PNET progression. Conclusions: the follow-up of neuroendocrine tumors of small size can be performed safely with only imaging tests. (AU)