Internal medicine
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In general, the recipient's ABO blood type changes to the donor's ABO blood type after ABO-incompatible allogeneic hematopoietic stem cell transplantation (HSCT). However, we experienced a 26-year-old male with acute myelogenous leukemia (AML) who underwent ABO-incompatible HSCT twice and persistently showed his original blood type even after demonstrating complete donor-type chimerism. Based on the results of various examinations, we considered that the antigen of the recipient's original blood type persistently synthesized in the recipient's non-hematopoietic organs was secreted and adsorbed on the surface of donor-derived RBCs. We should therefore perform detailed examinations to determine the precise blood type after ABO-incompatible HSCT.
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Nemaline myopathy (NM) is a rare muscle disease with various clinical types. In some cases, NM can lead to type 2 respiratory failure and right heart failure. ⋯ However, the limb and trunk muscle strengths were within normal limits. This case showed that NM should be considered as a cause of right heart failure and type 2 respiratory failure.
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We herein report two cases of cerebrospinal fluid (CSF) rhinorrhea associated with lung infiltrates. One patient presented with symptomatic non-resolving pneumonia, while the other was asymptomatic. ⋯ However, meningitis is a serious complication due to a delay in surgical management. Physicians should be made aware that CSF rhinorrhea is a potential cause of intractable lung infiltrates.