1. Abstract
1.1. Background: Trace elements play an important role in tuberculosis infection because their defi- ciencies can be associated with impaired immunity. The aim to assessment the serum copper and zinc levels among the tuberculosis patients in Khartoum state
1.2. Material: This is cross sectional study was conducted in Aboanja hospital in Khartoum state during the period from November 2016_January 2017.

Constitutional symptoms of primary myelofibrosis can mask COVID-19 infection. We present the case of a patient with primary myelofibrosis on ruxolitinib who tested positive for COVID-19 as part of Hematopoietic Stem Cell Transplant (HSCT) workup. The patient was asymptomatic and took over four weeks to develop a negative COVID-19 RT-PCR test. She did not test positive for COVID-19antibodies.

DOI: http://dx.doi.org/10.47829/ACMCR.2020.41001

1.Abstract1.1.Objective:Describe,withacasereport,thetreatmentofavestibularwhitespotlesiondueto traumatichypomineralizationinamaxillaryincisor,throughthecombineduseofmicroabrasion and resininfiltration.

Chronic natural killer cell lymphoproliferative disorders are a hematological disorder which is characterized by the proliferation ofCD3- cytotoxic natural killer cells. So far, the pathogenesis ofCLPDNK is still unclear, and there is no consensus on the effectiveness of drug therapy. Here, we report
a case of a 52-year-old female who presented with asymptomatic and was initially diagnosed with