XXXX : relationship between histologic lipid-rich cells and CT attenuation number.

@entity1 @entity5 @entity1412 @entity699 @entity652 @entity1368
OBJECTIVE: To evaluate the relationship between lipid-rich cells of the @entity652 and precontrast computed tomographic (CT) attenuation numbers in three clinical groups. MATERIALS AND METHODS: Thirty-five surgically resected @entity652 were used. The clinical diagnoses of the @entity1 included 13 cases of @entity1368 , 15 cases of @entity699 , and 7 non-functioning @entity5 . The number of lipid-rich clear cells was counted using a microscopic eyepiece grid that contained 100 squares. The results were expressed as the percentages of lipid-rich areas. RESULTS: There was a strong inverse linear relationship between the percentage of lipid-rich cells and the precontrast CT attenuation number (R(2)=0.724, P<0.0001). There were significantly more lipid-rich cells in the @entity1368 and @entity5 cases compared to cases of @entity699 (P=0.007 and 0.015, respectively). The CT attenuation numbers of the @entity1368 cases were significantly lower than those of @entity699 (P=0.0052). Furthermore, the CT attenuation numbers of the @entity5 cases were lower than those of @entity699 cases. CONCLUSION: We showed that @entity652 in @entity1368 and non-functioning @entity5 contain significantly more lipid-rich cells than those in @entity699 . They also showed significantly lower attenuation than that in @entity699 on CT scans. Our results suggest that precontrast CT attenuation numbers may be helpful in the differentiation of @entity652 from @entity1412 , which include @entity5 .
