By Albert L. Baert, Auguste Wackenheim, Louis Jeanmart (auth.)
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Extra info for Atlas of Pathological Computer Tomography: Volume 2: Abdominal Computer Tomography
16. 5 cm on the right, 3 cm on the Contrast-enhanced scan (45 s). 5 cm) emanating from the medial limb of the left adrenal gland. Contrast-enhanced scan (45 s). Spherical enlargement of both adrenal glands (-) with total loss of normal shape and configuration. ) Homogeneous, low but definite degree of contrast captation. left) metastasis from breast carcinoma. Demonstration of contrast enhancement of an adrenal mass is of important diagnostic value as the attenuation coefficient values of solid adrenal tumours on the plain scan may be low [J6}, so that confusion with a benign cyst is possible Fig.
Furthermore, there is no strict correlation between the size of the adrenal gland and its functional (hormonal) activity [9). The main purpose of the CT examination in these clinical settings is therefore to differentiate ACTHdependent Cushing's syndrome from that secondary to neoplasm [11, 14} 48
2a-d. Normal adrenal glands. a-d Four different shapes of the right adrenal gland (-) in the same patient (I-cm intervals): a horizontal linear shape, b inverted V-shape, eX-shape, d vertical linear shape. With the kind permission of J Com put Assist Tomogr . With high resolution CT, the visualization score of the adrenal glands is nearly 100% . The shape differs from patient to patient [3,13, 17 } and even in the same patient according to the level of the slice, as demonstrated here. This is due to rotation of the gland around a transverse or sagittal axis according to the development of the retroperitoneal fat [3, 10, 17].
Atlas of Pathological Computer Tomography: Volume 2: Abdominal Computer Tomography by Albert L. Baert, Auguste Wackenheim, Louis Jeanmart (auth.)