PMC5928032_01
(a,b) CT shows a well-circumscribed homogenous low-density mass measuring 6.2 x 6.0 cm (dotted arrow) between the upper posterior wall on the gastric greater curvature (thick arrow) and the pancreatic tail (thin arrow). The mass seems to originate from the pancreatic tail. The pancreatic tail stretches to the caudal side.
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Abdominal computed tomography(CT) showed a well-circumscribed homogenous low-density mass measuring 6.2 x 6.0 cm between the pancreatic tail and the upper posterior wall on the gastric greater curvature, indicating that the mass originated from the pancreatic tail (Fig. 1a,b). The wall of the mass was not enhanced, and the pancreatic tail stretched to the caudal side (Fig. 1b).
EUS shows a cystic mass adjacent to the stomach wall (thick arrow) and a heterogenous low-echoic lesion (dotted arrow) is circumscribed by a high-echoic thin wall.
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Endoscopic ultrasonography (EUS) demonstrated a cystic mass adjacent to the stomach wall showing a heterogenous low-echoic lesion circumscribed by a high-echoic thin wall (Fig. 2).
(a) A soft 6.0 cm x 6.0 cm mass (dotted arrow) adheres to the upper posterior wall on the gastric greater curvature (thick arrow) and it shares a smooth layer with stomach. (b) The mass (dotted arrow) is tightly adhered to the pancreas (thin arrow).
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Intraoperatively, a soft 6.0 cm x 6.0 cm mass adhered to the upper posterior wall on the gastric greater curvature and shared a smooth lining with the surface of the stomach (Fig. 3a). Furthermore, the mass was tightly adhered to the pancreas (Fig. 3b).
The specimen was a unilocular cyst and measured 6.0 x 5.6 x 4.0 cm in size. Thick arrow shows the cutting line of the stomach and thin arrow shows the pancreatic tail.
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Macroscopically, the specimen was a unilocular cyst, 6.0 x 5.6 x 4.0 cm in size (Fig. 4) and the cyst did not communicate with the gastric lumen or pancreatic duct.
(a) The lining epithelium consisted of the gastric foveolar epithelium with fundic gland (thin arrow) (HE x 200). (b) Pancreatic tissue of the pancreatic tail (thin arrow) and muscular layer of the cystic mass (dotted arrow) are intermingled (HE x 200).
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The lining epithelium consisted of gastric foveolar epithelium with fundic glands (Fig. 5a). Furthermore, pancreatic parenchyma of the pancreatic tail and muscular layer of the cystic mass were intermingled (Fig. 5b).