RESUMEN
PURPOSE: Myeloid sarcoma (MS) of the orbit is an uncommon condition in occurring in children, generally coupled to myeloproliferative neoplasms. OBSERVATIONS: We describe two rare cases of orbital MS in young boys with aggressive local symptoms but without evidence of acute myeloid leukemia (AML), both patients underwent orbitotomy for gross-tumor resection and biopsy. At follow up, there was no evidence of recurrence nor evolution of the myeloproliferative neoplasms clinically and by radiological and laboratory work-up. We also provide a detailed description of the magnetic resonance imaging presentation, with an extensive pathological analysis correlation. CONCLUSIONS AND IMPORTANCE: A comprehensive revision of the literature on isolated orbital MS was carried out with particular emphasis on clues for differential diagnosis and treatment options, stressing the need to consider MS even in the absence of sign and symptoms of an underlying myeloproliferative disorders.
RESUMEN
This study was done to investigate the current awareness and uptake of the hepatitis-B vaccination, as well as any changes in patterns over the years. A questionnaire was distributed among all dental staff, including dental specialists, general dentists, hygienists and dental surgery assistants at the dental department of the Military Hospital, Riyadh. Out of 126 DHCW, 112 (88.2%) responded. Ninety-six (85.7%) completed full course of vaccination, 4 (3.6%) did not intend to, be vaccinated and 10 (8.9%) were naturally immune. Of the 96 vaccinate, 42 (43.8%) did not confirm the vaccine efficacy by serological tests. And 54 vaccinate who had post-vaccination serology test, 26 (48.2%) did not check the results of the test. It is concluded from the study that in spite of greater acceptability of the HB vaccine by the DHCW, still a large proportion of them need further advise on the importance of post-vaccination serological tests.