PMC4110364_01
Abdominal ultrasonography. A homogeneous hypoechoic mass of 45 mm located in the head of pancreas, showing no blood flow on colour Doppler
PG-9-22937-g001.jpg
PMC4110364_01_PG-9-22937-g001.jpg
F0001
The pancreatic mass measured 45 mm and was hypoechoic, with regular inside echoes and well-defined margins (Figure 1).
Contrast-enhanced CT. A hypodense homogeneous tumour, consistent with fat density (see A before contrast IV injection). The lesion is poorly vascularized (see B and C showing arterial and portal venous phases, respectively). The tumour is encapsulated and surrounded by normal pancreatic tissue. It is adjacent to the superior mesenteric vessels
PG-9-22937-g002.jpg
PMC4110364_01_PG-9-22937-g002.jpg
F0002
The mass was homogenous and showed no contrast enhancement (Figure 2A-C).
Magnetic resonance images. The mass of high signal intensity on T1- (A) and T2-weighted (B) axial sequences, being isointense to subcutaneous and intra-abdominal fat. Fat-supressed T2-weighted image showing low signal intensity (C)
PG-9-22937-g003.jpg
PMC4110364_01_PG-9-22937-g003.jpg
F0003
On MRI the signal intensity of the pancreatic mass was equivalent to intra-abdominal and subcutaneous fat tissue (Figure 3A-C).
Histological examination reveals mature fat cells with no atypia. Staining with haematoxylin and eosin (40x)
PG-9-22937-g004.jpg
PMC4110364_01_PG-9-22937-g004.jpg
F0004
The transcutaneous ultrasound-guided fine needle aspiration biopsy (FNAB) confirmed the diagnosis, disclosing in the third sample the mature adipomatous cells with no atypia (Figure 4).