Related Experiment Videos
A case of solid pseudopapillary neoplasm of the pancreas and tumor doubling time
Tetsuro Kato1, Naoto Egawa, Terumi Kamisawa
1Department of Internal Medicine, Tokyo Metropolitan Komagome Hospital, Japan.
Background:
Solid pseudopapillary neoplasm of the pancreas is a rare tumor with unique clinicopathological features. Although it is considered to grow slowly, little is known about its doubling time.
Method:
We encountered a young Japanese woman with a solid pseudopapillary neoplasm of the pancreas that had been detected at another hospital 5 years previously but was resected at our hospital. The tumor showed only a solid component without any cysts. Computed tomographic scans taken 5 years apart were compared to determine the tumor doubling time.
Result:
The tumor doubling time according to the formula of Schwartz and co-workers was determined to be 765 days.
Conclusion:
These findings confirm that this tumor grows quite slowly and also support long disease-free periods even in patients who have recurrence or metastases.