Journal
CANCERS
Volume 15, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/cancers15092546
Keywords
intrapancreatic metastases; prevalence; CEUS; CH-EUS; EUS-guided sampling
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Intrapancreatic metastases are rare and can occur simultaneously or years after the initial diagnosis. Sonography and endosonography with contrast enhanced techniques are helpful in differential diagnosis. Renal cell carcinoma is the most common solitary metastasis with good prognosis after surgery. The primary tumor determines the further treatment, confirmed by endosonographic guided sampling for immunohistological examination.
Intrapancreatic metastases are rare. They could occur at the same time or years later after the initial diagnosis of the tumor. Sonography and endosonography with contrast enhanced techniques provide very good additional information for differential diagnosis from other tumors. The most common solitary metastasis is that of renal cell carcinoma, with good prognosis after surgical resection. The further procedure, and in other tumor entities, depends on the primary tumor. This requires confirmation by endosonographic guided sampling, with the collection of material for immunohistological examination.Abstract: A definite pathologic diagnosis of intrapancreatic metastasis is crucial for the management decision, i.e., curative or palliative surgery versus chemotherapy or conservative/palliative therapy. This review focuses on the appearance of intrapancreatic metastases on native and contrast-enhanced transabdominal ultrasound and endoscopic ultrasound. Differences and similarities in relation to the primary tumor, and the differential diagnosis from pancreatic carcinoma and neuroendocrine neoplasms are described. The frequency of intrapancreatic metastases in autopsy studies and surgical resection studies will be discussed. Further emphasis is placed on endoscopic ultrasound-guided sampling to confirm the diagnosis.
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