PubMed · 4920976
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R D Shtern. 1970. [Reticulosarcoma].. https://pubmed.ncbi.nlm.nih.gov/4920976/
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A patient with a previous diagnosis of lymphoma showed signs of dysphagia. Endoscopy found a lesion of the esophagus. Brush cytology and biopsy sampling were accomplished. The biopsy showed inflammation and granulation tissue but no tumor. The cytology specimen, however, was diagnostic of lymphoma. This case emphasizes the need for obtaining cytologic specimens concurrently with biopsies of esophageal lesions.
Two techniques have been approved by the United States FDA for diagnosis of tuberculosis in smear positive sputa: LCX M. tuberculosis, a ligase chain reaction procedure manufactured by Abbott Laboratories, and Amplicor, a polymerase chain reaction (PCR) procedure manufactured by Roche. However, these commercial methods are expensive and beyond the reach of laboratories in most developing countries. We compared the Roche Amplicor kit with an in-house PCR using a primer set for Mycobacterium tuberculosis/bovis directed at MPB 64 protein gene. It was able to distinguish between M. tuberculosis, M. avium, M. gordonii, M. intracellularae, and M. kansasii. Fifty-seven cytological samples were submitted to the laboratory for molecular diagnosis of M. tuberculosis. Both procedures were run on every sample submitted and the two methods agreed completely. The custom-made method is less expensive than the commercial technique.
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