PMC6016169_01
Abdominal computed tomography (CT) demonstrated a child-head-sized mass with heterogeneous contrast located in the left upper abdomen around the stomach, spleen, pancreas, and left kidney on the horizontal (a) and coronal (b) images.
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Abdominal computed tomography (CT) demonstrated a child-head-sized mass with heterogeneous contrast at the left upper abdomen around the stomach, spleen, pancreas, and left kidney on a horizontal image (Figure 1(a)) and coronal image (Figure 1(b)). The tumor was located at the left side of the stomach, posteriorly to the transverse mesocolon and pancreas, on the cranial side of the left kidney (Figures 1 and 2), but has not invaded the surrounding organs (Figures 1 and 2).
Magnetic resonance imaging (MRI) revealed a heterogeneously hyperintense mass on T1-weighted imaging (a), a relatively uniform and hyperintense mass on T2-weighted imaging (b), and a hypointense mass with an enhanced border on Gd-enhanced imaging (c).
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Magnetic resonance imaging (MRI) revealed a heterogeneously hyperintense mass on T1-weighted imaging (Figure 2(a)), a relatively uniform and hyperintense mass on T2-weighted imaging (Figure 2(b)), and a hypointense mass with an enhanced border on gadolinium- (Gd-) enhanced imaging (Figure 2(c)). The tumor was located at the left side of the stomach, posteriorly to the transverse mesocolon and pancreas, on the cranial side of the left kidney (Figures 1 and 2), but has not invaded the surrounding organs (Figures 1 and 2).
The operative findings revealed a yellow mass covered with a thin layer that was located at the left side of the stomach, posteriorly to the transverse mesocolon and pancreas, on the cranial side of the left kidney.
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The retroperitoneal tumor was resected (Figure 3).
An examination of the cut surface of this tumor revealed a multilobular yellow mass with bleeding in places.
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An examination of the cut surface of the tumor revealed a multilobular yellow mass with bleeding in places (Figure 4).
A histopathological examination (x200) with hematoxylin and eosin staining revealed that tumor was composed of a proliferation of mature and variable-sized adipocytes admixed with aggregates of hematopoietic elements.
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A histopathological examination with hematoxylin and eosin staining revealed that the tumor was composed of a proliferation of mature and variable-sized adipocytes admixed with aggregates of hematopoietic elements, associated with adrenal gland tissue in the peripheral region within the tumor (Figure 5).