PMC4383276_01
Computed tomographic scan showing a large retroperitoneal mass with cystic and solid components.
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Computed tomographic scan (CT) showed a large retroperitoneal mass with cystic and solid components (Figure 1).
The gross specimen of a well-encapsulated 21 x 15 x 13 cm retroperitoneal mass.
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The patient underwent a laparotomy and resection of a well-encapsulated 21 x 15 x 13 cm retroperitoneal mass (Figure 2).
High power image of the tumor with multinucleated tumor cells and atypical mitotic figure. Image provided by Martine C McManus, MD.
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Pathology determined that the mass was most consistent with a primary retroperitoneal mucinous tumor (PRMT) with an associated invasive moderate-to-poorly differentiated adenocarcinoma (Figure 3).