PMC7335250_01
Ultrasound revealed a subcostal solid mass located on the left hypochondrium (red arrow), having a contact with the tail of the pancreas (white arrow) and the spleen (green arrow). It was hypoechoic, heterogenous. The left kidney was pushed back without being involved (yellow arrow)
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Ultrasound demonstrated a heterogeneous mass, having a contact with the tail of the pancreas and the spleen (Figure 1). Pathologic results, combined with immunohistochemical study were consistent with the diagnosis of SPT (Figure 3, Table 1).
Computed tomography (CT) imaging identified a well-circumscribed mass located in the body and the tail of the pancreas (arrow). It was heterogeneous, containing cystic and solid portions, with peripheral calcifications. The solid portion had heterogenous enhancement after intravenous contrast administration, demonstrating some necrotic areas
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It was heterogeneous, solido-cystic, with peripheral calcifications, measuring approximatively 7 x 8 x 10.5 cm in maximum transverse, anterior-posterior and craniocaudal dimensions, respectively (Figure 2).
Pathologic results revealed a tumoral proliferation of rounded cells with a myxoid background. The architecture described layers of monomorphic cells with hyperchromatic nuclei and moderately abundant cytoplasm
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Pathologic results, combined with immunohistochemical study were consistent with the diagnosis of SPT (Figure 3, Table 1). Histological examination showed a proliferation of tumors arranged in islets, layers, papillae, cords and tubes (Figure 3).
The tumor expressed the beta-catenin [A] and CD56 [B]. CD99 which is a particular dot-like intracytoplasmatic marker, was highly expressed [C]
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CD 99 which is a particular dot-like intracytoplasmatic marker, was highly expressed (Figure 4).
Gross appearance shows mixed solid whitish brown areas with foci of necrosis and hemorrhage and cystic areas containing necrotic fragments
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Macroscopically, it demonstrated characteristic areas of hemorrhage and necrosis, that were friable, with tissular portions having a brownish color (Figure 5).