- “ Intrapancreatic accessory spleen (IPAS) should be considered when a hypervascular mass is seen in the tail of the pancreas on CT. Typical location, similar attenuation of the lesion to the spleen on noncontrast, and postcontrast CT at different phases are helpful to make diagnosis of IPAS.”
Intrapancreatic accessory spleen: CT appearance and differential diagnosis
Kawamoto S, Johnson PT, Hull H, Cameron JL, Hruban RH, Fishman EK
Abdom Imaging (2012)37:812-827 - “ In autopsy studies, the second most common site of accessory spleen is the tail of the pancreas.”
Intrapancreatic accessory spleen: CT appearance and differential diagnosis
Kawamoto S, Johnson PT, Hull H, Cameron JL, Hruban RH, Fishman EK
Abdom Imaging (2012)37:812-827 - Intrapancreatic Accessory Spleen: CT Findings
CT attenuation and enhancement pattern
- Similar enhancement on noncontrast and postcontrast scans
- Arterial phase enhancement is similar to the spleen including the serpiginous pattern of enhancement - Intrapancreatic Accessory Spleen: Differential Dx
- Neuroendocrine tumor (NETs)
- Metastatic renal cell carcinoma to the pancreas
- Splenic artery aneurysm - “ However, when it remains difficult to exclude the other diagnosis, 99m-Tc labeled HDRBC scintigraphy or SPIO-enhanced MR imaging can be used to confirm the diagnosis of IPAS, with the caveats described above.”
Intrapancreatic accessory spleen: CT appearance and differential diagnosis
Kawamoto S, Johnson PT, Hull H, Cameron JL, Hruban RH, Fishman EK
Abdom Imaging (2012)37:812-827
- Epidermoid cyst in intrapancreatic accessory spleen
- 1. Cyst lined by stratified squamous epithelium.
- 2. Dozens of case reports.
- 3. Squamous-lined cysts of the pancreas: lymphoepithelial cysts, dermoid cysts,[ teratomas ], and accessory-splenic epidermoid cysts. Adsay NV et al. Semin Diagn Pathol. 2000 ; 17: 56-65. [ Wayne State.
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