Question:

What is the estimated frequency of splenules in the general population?
1. 1-5%
2. 5-15%
3. 10-30%
4. 25-45%
5. > 40%





Answer:

The correct answer for the question "What is the estimated frequency of splenules in the general population?" is:

3. 10-30%



Explanation

1. Splenules are not found in 1-5% of the population; rather splenules have been found in 10-30% of patients at autopsy. (Accessory splenic tissue is relatively common having been identified in 16% of patients undergoing contrast enhanced abdominal CT and seen in 10-30% of patients at autopsy.)

2. Splenules are not found in 5-15% of the population; rather splenules have been found in 10-30% of patients at autopsy. (Accessory splenic tissue is relatively common having been identified in 16% of patients undergoing contrast enhanced abdominal CT and seen in 10-30% of patients at autopsy.)

3. Splenules have been found in 10-30% of patients at autopsy. (Accessory splenic tissue is relatively common having been identified in 16% of patients undergoing contrast enhanced abdominal CT and seen in 10-30% of patients at autopsy.)

4. Splenules are a relatively common finding; however, they are not found in 25-45% of the population. Rather, they have been found in 10-30% of patients at autopsy. (Accessory splenic tissue is relatively common having been identified in 16% of patients undergoing contrast enhanced abdominal CT and seen in 10-30% of patients at autopsy.)

5. Splenules are a relatively common finding; however, they are not found in >40% of the population. Rather, they have been found in 10-30% of patients at autopsy. (Accessory splenic tissue is relatively common having been identified in 16% of patients undergoing contrast enhanced abdominal CT and seen in 10-30% of patients at autopsy.)



From the manuscript:
SPECT/CT imaging of a retroperitoneal nodule in a patient with history of infiltrating renal urothelial carcinoma
Radiology Case. 2009 Sep; 3(9):18-21


This article belongs to the Nucs section.




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From the manuscript

SPECT/CT imaging of a retroperitoneal nodule in a patient with history of infiltrating renal urothelial carcinoma

Free full text article: SPECT/CT imaging of a retroperitoneal nodule in a patient with history of infiltrating renal urothelial carcinoma

Abstract
A 62 year old woman status post radical nephroureterectomy for high grade urothelial carcinoma was found on CT to have a 1 cm retroperitoneal nodule in the nephrectomy bed. The nodule`s differential diagnosis included recurrent urothelial carcinoma versus relocation of the patient`s splenule seen on earlier CT imaging. We report using SPECT/CT with Tc-99m labeled denatured red blood cells to definitively diagnose the nodule as a relocated splenule.






References



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