2007 Volume 21 Issue 7 Pages 950-955
We experienced 2 cases of pulmonary sclerosing hemangioma showing different findings on FDG-PET. Case 1. A 65-year-old man with a lung tumor of the right S9 was referred to our department. The tumor revealed a high uptake (SUV 4.49) of FDG-PET. We performed partial resection of the right S9. The specimen of this tumor had a characteristic of sclerosing hemangioma, and solid and papillary patterns were dominant. Positive cells comprised about 8.5% on MIB-1 staining. However, no difference in distribution in each part was observed on MIB-1 staining. Case 2. A 43-year-old woman with a lung tumor of the right S4 was referred to our department. FDG-PET showed no uptake. She underwent partial resection of the right S4. The specimen of this tumor had a characteristic of sclerosing hemangioma, and a solid pattern was dominant. Positive cells comprised less than 1% on MIB-1 staining. Sclerosing hemangioma, that reveals both a high uptake of FDG-PET and a high percentage of MIB-1 staining, is required of careful follow because it has malignant potential.
