PMC4897094_01
Case 1, 47-year-old woman with wandering spleen. (A-F) Axial reconstructions derived from the CT portion of the PET/CT demonstrate the 'whorled-appearance' of the long vascular pedicle extending to the ectopic spleen. The alternating bands of hypodensity and hyperdensity represent the splenic vessels and surrounding fat of the twisted splenic pedicle. [red arrow = splenic artery; yellow arrow = pancreas; white arrow = splenic vein; asterisk = spleen]
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The PET/CT demonstrated an 18 cm spleen in the left lower abdomen and pelvis with twisting of the splenic artery and vein within the mid abdomen (Fig. 1).
Case 1, 47-year-old woman with wandering spleen. (A-C) Coronal CT and (D-F) coronal fused PET/CT images. The normal splenic bed in the left upper quadrant is empty. There is a large soft tissue mass in the left lower abdomen representing an ectopic spleen. There is normal radiotracer uptake within the splenic parenchyma.
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There was normal F-18 FDG distribution within the ectopic spleen (Fig. 2).
PMC4897094_02
Case 2, 3-year-old girl with wandering spleen. (A) Transverse sonogram of the left abdomen demonstrates a primarily hypoechoic mass in the left abdomen with a speckled internal appearance representing the spleen. Additionally, the hilum of the spleen is abnormally directed towards the left. (B) Noncontrast CT scan demonstrated a large primarily hypodense mass in the left abdomen.
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A sonogram was performed which demonstrated a speckled spleen with its hilum pointed towards the left lateral surface (Fig. 3A). A follow-up noncontrast CT demonstrated a large nonenhancing hypodense mass in the left abdomen consistent with an enlarged, ectopic and partially infarcted spleen (Fig. 3B).
Case 2, 3-year-old girl with wandering spleen. (A-B) Gross specimen photographs demonstrate an enlarged, partially infarcted spleen with a long, twisted vascular pedicle.
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A partially infarcted spleen was found at the end of a long, twisted vascular pedicle causing torsion (Fig. 4).