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[Intrahepatic splenosis: a case report]
Yasuhiro Nakata1, Hideo Yoshida, Takahiro Shiono
1Department of Radiology, Kanto-Rosai Hospital.
Nihon Igaku Hoshasen Gakkai Zasshi. Nippon Acta Radiologica
|April 16, 2003
Summary
Intrahepatic splenosis, a rare condition, can mimic liver hemangioma on imaging. Advanced MRI with superparamagnetic iron oxide (SPIO) aids in diagnosing this splenic tissue in the liver.
Area of Science:
- Medical Imaging
- Radiology
- Gastroenterology
Background:
- Intrahepatic splenosis is a rare condition where splenic tissue is found within the liver.
- It can present as an incidental finding or mimic other liver lesions, posing diagnostic challenges.
Observation:
- A 55-year-old man presented with a liver lesion in the right lobe.
- Dynamic CT and MRI revealed a lesion similar to hemangioma.
- T2-weighted imaging (T2WI) after superparamagnetic iron oxide (SPIO) injection showed signal loss but maintained slight hyperintensity relative to the liver parenchyma.
Findings:
- The observed lesion was consistent with normal splenic tissue, despite initial imaging similarities to hemangioma.
- Superparamagnetic iron oxide (SPIO) enhanced MRI demonstrated characteristic signal behavior of splenic tissue within the liver.
- Radiographic features of intrahepatic splenosis are infrequently reported in medical literature.
Implications:
- A comprehensive diagnostic approach combining CT, MRI (including SPIO injection), and potentially angiography is crucial for accurate diagnosis of intrahepatic splenosis.
- Recognizing the imaging patterns of intrahepatic splenosis can prevent misdiagnosis and unnecessary invasive procedures.
- This case highlights the utility of advanced MRI techniques in characterizing rare liver lesions.