Case of metachronous bilateral isolated adrenal metastasis from colorectal adenocarcinoma and review of the literature

Figure 1 Abdominal enhanced computed tomography revealed a low density mass in the right adrenal gland.

Figure 2 Adrenal tumor. A: Macroscopic findings of the adrenal lesion showed a solid tumor with necrosis; B: Microscopic findings of the adrenal tumor showed moderately differentiated adenocarcinoma that resembles the primary sigmoid lesion that had been resected. This indicated that the metastasis was from the sigmoid carcinoma.

Figure 3 Computed tomography image. A: Computed tomography (CT) of the abdomen shows a left adrenal mass; B: CT evaluation showed response of the adrenal metastases after chemotherapy.

Figure 4 Pathological findings of the left adrenal tumor showed moderately differentiated adenocarcinoma, compatible with metastasis from the rectal carcinoma.