Nonleukemic myeloid sarcoma (MS) is a rare tumor that can occur in several locations without myeloid leukemia. We reported a first case of nonleukemic MS of the spleen involving the liver in a 5-month-old boy presenting with hematochezia, petechial hemorrhage, fever, and hepatosplenomegaly. Bone marrow trephine biopsy and immunophenotypic flow cytometry revealed no evidence of myeloid leukemia. The patient underwent liver biopsy and splenectomy. Clinicopathology and immunohistochemistry suggested a disseminated nonleukemic MS. The patient died of respiratory failure on the seventh postoperative day. Early diagnosis of a disseminated nonleukemic MS may be quite important for patient survival and it should be considered one of the differential diagnoses of hepatosplenomegaly with atypical clinical features.
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http://dx.doi.org/10.1097/MPH.0000000000000757 | DOI Listing |
J Pediatr Hematol Oncol
May 2017
*Zhejiang University School of Medicine, 117 Hospital of People's Liberation Army †Division of Hematology and Oncology, Children's Hospital, Zhejiang University School of Medicine ‡Department of Pathology, Children's Hospital, Zhejiang University School of Medicine §Clinical Lab, Children's Hospital, Zhejiang University School of Medicine ∥Department of Medical Microbiology and Parasitology, College of Medicine, Zhejiang University, Hangzhou, China.
Rev Assoc Med Bras (1992)
October 2016
PhD, MD - Pathologist and Researcher, Universidade Federal da Bahia, Salvador, BA, Brazil.
Adult T-cell leukemia/lymphoma (ATL) is a malignancy of mature CD4+ T-cells caused by human T-cell lymphotropic virus type 1 (HTLV-1). Twenty million people are believed to be infected throughout the world, mostly in Japan, Africa, the Caribbean, and South America, particularly in Brazil and Peru. ATL affects about 5% of infected individuals and is classified in the following clinical forms: acute, lymphoma, primary cutaneous tumoral, chronic (favorable and unfavorable), and smoldering (leukemic and non-leukemic).
View Article and Find Full Text PDFBrain Behav Immun
May 2012
Cousins Center for Psychoneuroimmunology, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA 90095, USA.
Clinical studies suggest that stress-related biobehavioral factors can accelerate the progression of hematopoietic cancers such as acute lymphoblastic leukemia (ALL), but it is unclear whether such effects are causal or what biological pathways mediate such effects. Given the network of sympathetic nervous system (SNS) fibers that innervates the bone marrow to regulate normal (non-leukemic) hematopoietic progenitor cells, we tested the possibility that stress-induced SNS signaling might also affect ALL progression. In an orthotopic mouse model, Nalm-6 human pre-B ALL cells were transduced with the luciferase gene for longitudinal bioluminescent imaging and injected i.
View Article and Find Full Text PDFIntern Med
March 2008
Department of Internal Medicine and Clinical Immunology, Yokohama City University School of Medicine, Yokohama.
Int J Hematol
June 2002
Department of Medicine, Tokyo Medical and Dental University, Japan.
A randomized prospective double-blind trial was performed to compare the safety and efficacy of human activated protein C (APC) and unfractionated heparin for the treatment of disseminated intravascular coagulation (DIC). One hundred thirty-two patients with DIC were enrolled in this study: 63 patients received APC (12.5 U [2.
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