Primary solid pancreatic tumors: recent imaging findings updates with pathology correlation.

Area of Science:

• Radiology
• Oncology
• Pathology

Background:

• Established imaging findings for primary solid pancreatic tumors exist.
• Recent literature reveals novel pathological entities and atypical presentations of common tumors.
• Imaging-pathology correlation is crucial for accurate diagnosis.

Purpose of the Study:

• To present imaging-pathology correlations for challenging pancreatic tumors.
• To discuss early imaging detection of pancreatic cancers.
• To highlight atypical imaging findings of common tumors and novel pathological entities.

Main Methods:

• Review of recent literature on pancreatic tumor imaging.
• Analysis of imaging findings and correlation with pathological data.
• Discussion of specific tumor types including isoattenuating pancreatic ductal adenocarcinomas, colloid pancreatic cancer, serotonin-producing neuroendocrine tumors, small solid pseudopapillary tumors, and solid serous adenoma.

Main Results:

• 5%-14% of pancreatic ductal adenocarcinomas are isoattenuating on dynamic contrast-enhanced CT, posing diagnostic challenges.
• Colloid pancreatic cancer can mimic cystic lesions due to mucin content.
• Serotonin-producing neuroendocrine tumors exhibit unique ductal obstruction patterns due to fibrosis.
• Small solid pseudopapillary tumors present as solid lesions with gradual enhancement, differing from typical encapsulated neoplasms.
• Solid serous adenoma appears as a hypervascular solid nodule.

Conclusions:

• Accurate imaging interpretation requires awareness of atypical presentations and rare pancreatic tumors.
• Understanding imaging-pathology correlations improves early detection and diagnosis of pancreatic cancer.
• Distinguishing these entities on imaging is vital for appropriate patient management.