منابع مشابه
occult hepatitis b in patients co-infected with hepatitis c and human immunodeficiency viruses
conclusions the significant number of coinfected hiv-hcv patients only had hbcab positive test without detectable hbv-dna. further studies for detection of hbv-dna in both serum and liver biopsy specimens may help clarify the impact of hbv infection in coinfected hiv/hcv patients. results of 103 hiv-hcv coinfected patients, both hbsag and hbcab were positive in 7 patients (6.8%), negative in 44...
متن کاملOccult primary.
Overview Occult primary tumors, or cancers of unknown primary (CUPs), are defined as histologically proven metastatic malignant tumors whose primary site cannot be identified during pretreatment evaluation.1,2 They have a wide variety of clinical presentations and a poor prognosis in most patients. Patients with occult primary tumors often present with general complaints, such as anorexia and w...
متن کاملOccult Hepatitis B in Patients Undergoing Chemotherapy
Introduction: The hepatitis B virus (HBV) is one health problem in Iran. Occult hepatitis B (OBI) is diagnosed by the detection of HBV DNA in the serum or liver tissue of patients for whom other serology, especially HBsAg and HBcAg, are negative. The current study aimed to determine the prevalence of OBI in patients who refer for chemotherapy. Methods: Al...
متن کاملOccult cerebral arteriovenous malformations.
Angiographically occult arteriovenous malformations in the brain are rare but cause considerable diagnostic difficulty. Four personal cases are presented in which CT scans showed hypodense lesions with minimal or no enhancement, and angiograms showed only an avascular mass. Gliomas, a dermoid and an infarct were suspected before histological examination of biopsies or excised specimens. The pat...
متن کاملOccult primary, version 3.2014.
The NCCN Guidelines for Occult Primary tumors provide recommendations for the evaluation, workup, management, and follow-up of patients with occult primary tumors (cancers of unknown primary). These NCCN Guidelines Insights summarize major discussion points of the 2014 NCCN Occult Primary panel meeting. The panel discussed gene expression profiling (GEP) for the identification of the tissue of ...
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ژورنال
عنوان ژورنال: Nature
سال: 1959
ISSN: 0028-0836,1476-4687
DOI: 10.1038/183071a0