Two pseudotumor cases mimicking liver malignancy.

Inflammatory pseudotumor of the liver is a rare benign tumor that can be confused with malignant tumors of the liver. It is usually diagnosed after pathologic evaluation of the resected lesion. If a mass lesion in the liver is suspicious for malignancy on radiologic evaluation then surgical resection is planned for suitable patients rather than a biopsy. Inflammatory pseudotumors are similar to malignant tumors on macroscopic assessment, but microscopically they are characterized by the presence of inflammatory cells. In case of clinical or radiologic suspicion, the lesion is biopsied and once the diagnosis of inflammatory pseudotumor is made the lesion is managed by conservative-medical treatment. It must be kept in mind as part of differential diagnosis to avoid unnecessary surgery.