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INTRODUCTIONPrimary hepatic lymphoma is a rare malignancy which misdiagnosis and mistreatment is very frequent. Differential diagnosis of the hepatic lesion, based on the noninvolvement of blood vessels, includes: fatty infiltration, cirrhosis, amyloid infiltration, primary hepatomas, and metastatic neoplasms.PRESENTATION OF CASEWe describe a case of a 69-year-old man who presented with 15% weight loss and general fatigue over the previous 9 months. Physical examination revealed hepatomegaly without lymphadenopathy or splenomegaly. Magnetic resonance imaging showed a 13 cm × 9 cm × 11 cm tumor on the right liver associated with normal levels of alpha-fetoprotein (AFP) and carcinoembryonic antigen (CEA). After two negatives ultrasonography-guided needle liver biopsies, the third one showed diffuse infiltration of large sized lymphoid cells. Immunohistochemical findings demonstrated the B-lymphocyte lineage of the tumor. The patient received R-CHOP therapy (cyclophosphamide, doxorubicin, vincristine, prednisone, and rituximab) with good response.DISCUSSIONIt is important to recognize PHL because it responds favorably to chemotherapy and may have a better prognosis than hepatocellular carcinoma or metastatic disease of the liver. When imaging findings on CT scans and MRI are nonspecific, a biopsy is needed not only for a definitive diagnosis but also for identifying the immunophenotype of the PHL. This type of lesion is highly chemosensitive and early aggressive chemotherapy may result in sustained remission.CONCLUSIONThis case emphasizes the importance of effective recognition of PHL considering its good response to chemotherapy and the possibility of sustained remission if early aggressive treatment is implemented.

Over the past two decades, a considerable expansion of malaria interventions has occurred at the national level in Angola, together with cross-border initiatives and regional efforts in southern Africa. Currently, Angola aims to consolidate malaria control and to accelerate the transition from control to pre-elimination, along with other country members of the Elimination 8 initiative. However, the tremendous heterogeneity in malaria prevalence among Angolan provinces, as well as internal population movements and migration across borders, represent major challenges for the Angolan National Malaria Control Programme. This review aims to contribute to the understanding of factors underlying the complex malaria situation in Angola and to encourage future research studies on transmission dynamics and population structure of Plasmodium falciparum, important areas to complement host epidemiological information and to help reenergize the goal of malaria elimination in the country.

OBJETIVO: Descrever a técnica de avaliação do esvaziamento gástrico em crianças. MATERIAIS E MÉTODOS: Foram estudadas 14 crianças voluntárias saudáveis, com idades de 2 a 11 anos. As crianças ingeriram leite modificado, na proporção de 200 ml/m² de superfície corporal. A área do antro gástrico foi medida em todos os pacientes no tempo zero, antes da ingestão do meio de contraste, e aos 60, 90, 120 e 150 minutos após a ingestão do meio de contraste. RESULTADOS: A dieta foi bem tolerada pelos pacientes. Foi observado que em 150 minutos após a ingestão do alimento, 85% dos pacientes apresentaram-se com esvaziamento gástrico total. CONCLUSÃO: A ultra-sonografia é método seguro e barato, sendo uma alternativa para o estudo do esvaziamento gástrico.