PMC6784621_01
PMC6784621_02
Contrast-enhanced abdominal computed tomography reveals a right adrenal mass. Axial (A) and coronal (B) images of a well-defined, heterogeneously enhancing mass measuring 18x11x18 cm between the liver and right kidney.
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Abdominal CT showed a heterogeneously well-defined single mass with dimensions of 18x11x18 cm between the liver and right kidney (Fig. 1).
Gross appearance of the resected adrenal tumor. The mass was large, solitary, and circumscribed tumor (21x15.3x12 cm). The cut section is yellowish-tan in color, with a variegated appearance. Many areas of necrosis and hemorrhage are visible.
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A gross pathology examination of the surgically resected tumor revealed a size of 21x15.3x12 cm and a smooth and partially fibrous outer surface. An analysis of the tumor cross-section revealed encapsulated yellowish-brown nodules and widely distributed necrotic and hemorrhagic lesions (Fig. 2).
Immunohistochemical staining of the tumor. The Ki-67 index of the tumor cells is 20% (x400).
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The immunohistochemistry results included positive staining for inhibin alpha, MART-1, and calretinin and a Ki67 proliferation index of 20% (Fig. 4).