CT Features of Large Adrenal Adenoma and Comparison of Pathological Feature between Large Adenoma and Small Adenoma
- VernacularTitle:肾上腺大腺瘤的CT征象分析及大小腺瘤的病理特征对比
- Author:
Li TIAN
;
Yan GUO
- Publication Type:Journal Article
- Keywords:
adrenal gland;
large adrenal adenoma;
tomography,X-ray computed,pathology
- From:
Journal of Practical Radiology
2000;0(12):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the CT features of large adrenal adenoma and to compare the pathological features of large adenoma and small adenoma in order to improve the diagnosis of large adenoma.Methods The unenhanced and enhanced CT images of 14 patients with large adrenal adenoma,proven surgically and pathologically and pathological features of small adrenal adenomas in 30 cases were retrospectively reviewed.The pathological features were evaluated in the cell composition,the incidence of cystic degeneration and hemorrhage of large adenoma and small adenoma.Results 14 large adenomas were unilateral and single,3 had distinct margin and 11 had indistinct margin,14 showed regular contour of round or ellipse,the size of tumors were 5 cm?5.5 cm～18 cm?20 cm.14 large adenomas presened heterogenous density in unenhanced CT study with CT value of-36～51 HU,and 3 showed calcification and 6 showed cystic degeneration.Most of the 14 adenomas presented heterogenenous enhancement after contrast administration.Pathologic examination indicated that the clear cells were predominant in the cell composition of small adenoma,while in the case of large adenoma,the proportion of compact cell predominance was equivalent to that of the clear cell and compact cell concomitance.3 small adenomas and 6 large adenomas had cystic degeneration,5 small adenomas and 4 large adenomas had hemorrhage respectively.Statistical analysis suggested that large adenoma had higher incidence of degeneration than that in small adenoma,while no difference was found in the cell composition and incidence of hemorrhage between large adenoma and small adenoma.Conclusion The large adrenal adenomas have higher incidence of degeneration than that in small adenoma,while no difference is found in cell composition and incidence of hemorrhage between large adenoma and small adenoma.
