PMC8240227_01
Transabdominal ultrasonography showed hypoechoic cystic lesion in the region of head of pancreas (white arrows).
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F1
US revealed a cystic lesion on the head of pancreas (Fig. 1), whereas body and tail of pancreas could not be visualized due to bowel gas shadow.
On the axial section, contrast-enhanced computed tomography scan images, head of pancreas could see (blue arrow) but the neck, body, and tail of the pancreas are not visualized and potential space is filled with intestinal loops (white arrows).
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F2
CT examination demonstrated the absence of neck, body, and tail of the pancreas (Fig. 2).
On the axial section, computed tomography scan, cystic lesion could see (arrow) in the area at head of pancreas. Density of the cystic lesion is 2.4 Hounsfield Unit (HU).
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F3
Only the head and uncinate segment of the pancreas was visualized and the hypodense unilocular cystic lesion was revealed at the head of pancreas (Fig. 3).
On the axial section, magnetic resonance imaging dynamic contrast-enhanced scan, cystic lesion showed no contrast enhancement in its wall (white arrows).
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F4
T1-weighted imaging and hyperintense in T2-weighted imaging (Fig. 4). These findings were compatible with dorsal pancreatic agenesis with pancreatic cyst.