Abstract
A patient with acute right abdominal pain and nausea underwent various diagnostic imaging studies, including ultrasonography (US), computed tomography (CT), magnetic resonance imaging (MRI), technetium-99m DTPA renal study, and contrast arteriogram. The 99mTc renal study showed a linear photopenic area along the lateral cortical aspect of the right kidney and a focal cortical defect in the left kidney. These lesions corresponded to the findings of US, CT, MRI, and contrast angiography. Because of a suspected malignant mass, a CT-guided aspiration biopsy of the right kidney was performed that resulted in bloody fluid without malignant cells. The patient's condition was diagnosed as intrarenal and subcapsular renal hematoma. The patient was treated conservatively and followed up with CT and US studies. Sequential CT and US demonstrated gradual reduction of the size of the hematoma, and complete resolution was confirmed by US 1.5 years later. As long as underlying pathology can be ruled out, conservative management of spontaneous renal subcapsular hematoma is recommended.
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