The patient had no complaints of weight loss or night sweats. Physical

examination was normal. Laboratory results were normal, apart from an increase in liver function tests. Carcinoembryonic antigen (CEA) level and alpha feto protein (AFP) level were normal. Epstein-Barr virus, hepatitis viruses and human immunodeficiency virus serologies were negative. Abdominal ultrasound (GS-1101 cost Figure 1) and CT scan (Figure 2) showed an enlarged liver with a single mass in the right lobe (8.4 cm × 7.3 cm). No adenopathy was detected in the abdominal cavity, and there was a normal size and appearance spleen. Figure 1 Abdominal US scan: large single mass in the right lobe, Inhibitors,research,lifescience,medical without splenomegaly and lymphadenopathies Figure 2 Abdominal CT scan: large single mass in the right lobe, without splenomegaly and lymphadenopathies Percutaneous liver biopsy led the diagnosis of adenocarcinoma without differentiation. Total body CT scan, PET-Scan (Figure 3), gastroscopy, colonoscopy and iliac crest bone marrow biopsy suggested a localized primary

liver mass. Figure 3 PET-Scan Inhibitors,research,lifescience,medical revealing only the tumor of the right liver Because of the favourable anatomic location of the tumor and the absence of metastatic disease, a right hepatectomy was performed. The abdominal exploration revealed no evidence of extrahepatic tumor or adenopathy. The postoperative course was favourable, and he Inhibitors,research,lifescience,medical was discharged from hospital on the 7th postoperative day. Inhibitors,research,lifescience,medical The surgical specimen consisted of a right hepatic lobe of 1,500 g weight, with a neoplasm of 11 cm in segments 7 and 8. The tumor appearance was white, soft and homogeneous, without focal necrosis nor hemorrhage. It was well circumscribed and lobulated, and appeared to be completely within the limits of resection. Microscopically, a population of lymphoid cells of

large size with many mitotic figures was identified. The large neoplastic lymphoid cells immunostained positively for CD-30 (Ki-1), CD-3, ALC and CD-45, with an index of proliferation Ki 67 Inhibitors,research,lifescience,medical +++ (80%). The CD-20, CD-79a, CD-8, CD-4, CD-15, S-100, HMB45, AE1-3, CAM 5.2, actin/desmin tests were negative. Therefore, the diagnosis of non-Hodgkin lymphoma, large-cell anaplastic type, Ki-1 lymphoma ALOX15 was given. Postoperatively, the patient received systemic chemotherapy with cyclophosphamide, vincristine, doxorubicin and prednisolone (CHOP) for four courses. Twenty months after surgery the patient is disease free. Discussion Non-Hodgkin lymphoma is a common lympho-proliferative disease. Liver involvement occurs in 10% of the patients and it means advanced disease (stage 4). The first report of primary hepatic lymphoma was by Ata and Kamal in 1965 (4). Primary hepatic lymphomas (PHL) are rare, with fewer than 100 cases reported in the world literature. PHL defines an extra-nodal lymphoma of the liver without involvement of any other organ.