PMC3874313_01
Computed tomography of the abdomen showing the right adrenal mass with malignant features, such as heterogeneous contrast enhancement. (A) sagittal plane, (B) coronal plane, and (C) axial plane (blue arrows point to the tumor).
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fig1
On abdominal computed tomography (CT) the mass was found to exhibit malignant features, such as heterogeneous contrast enhancement (Figure 1).
Immunohistochemical staining of the tumor cells. (A) H&E staining, x25 magnification, (B) H&E staining, x200 magnification (C) positive chromogranin staining, x200 magnification, (D) positive synaptophysin staining x200 magnification, (E) positive NSE staining, x100 magnification, (F) positive CD56 staining, x200 magnification, (G) positive S-100 staining, x50 magnification, and (H) negative PanCK staining, x100 magnification.
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fig2
Histological examination of the specimen on H&E staining revealed rosettes of neoplastic cells with small size rounded cores (Figure 2). On immunohistochemical staining, tumor cells were positive for chromogranin, synaptophysin, NSE, CD56, and S-100 and negative for PanCK (Figure 2).