1. MedPix Medical Image Database COW - Case of the Week Case Contributor: James G. Smirniotopoulos, M.D. Affiliation: Uniformed Services University

2. MedPix No: 2015 - History Pt Demographics: Age = 15 y.o. Gender = Downloaded by (-1)

3. MedPix No: 2015 - EXAM & LABS

4. Lipoma,Pineal region There is a round and homogeneously hyperintense mass in the region of the supracerebellar/quadrigeminal cistern. Notice that the mass has the same high intensity as that found in the subcutaneous fat, and in the marrow fat of the clivus. Downloaded by (-1)

5. Lipoma, Pineal region There is a sharply demarcated yellow mass behind the 3rd ventricle and midbrain - in the region of the pineal gland and quadrigeminal plate cistern. Downloaded by (-1)

6. FINDINGS

7. DIFFERENTIAL DIAGNOSIS What is your Differential Diagnosis?

8. Diagnosis: Lipoma Dx Confirmed by:

9. DISCUSSION