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Atypical Leukemia

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https://www.readbyqxmd.com/read/28527402/a-rare-e13a3-b2a3-bcr-abl1-fusion-transcript-with-normal-karyotype-in-chronic-myeloid-leukemia-the-challenges-in-diagnosis-and-monitoring-minimal-residual-disease-mrd
#1
M-H Duan, H Li, H Cai
Patients with chronic myeloid leukemia (CML) have a t (9;22)(q34;q11.2) or variant translocation that results in a BCR-ABL1 fusion gene. For many years, conventional karyotyping has been used as the standard diagnostic tool for t (9;22) (q34;q11.2). However, it has several limitations that may lead to failure for detecting BCR-ABL1 gene rearrangements in around 5% of all CML patients. Although reverse transcription polymerase chain reaction (RT-PCR) has evolved as a sensitive method for detecting BCR-ABL1 translocation, this method fail to detect certain BCR-ABL1 fusion transcript type, such as e13a3 (also known as b2a3), as a result of many commercially available and laboratory-developed primer sets...
May 12, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28523957/clinical-case-idelalisib-induced-immunoglobulin-flare
#2
Jan Novak, Martin Havrda, Lubica Gaherova, Jan Spicka, Tomas Kozak
IgM flare is a transient, treatment-induced, increase of monoclonal IgM levels in lymphoplasmacytic lymphoma/Waldenström macroglobulinemia (LPL/WM) patients. Until recently this phenomenon was observed in patients treated with Cladribine and Rituximab. Here we report a case of a heavily pretreated chronic lymphocytic leukemia patient with an atypically high immunoglobulin production who developed clinically significant immunoglobulin flare following Idelalisib treatment.
May 19, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28523571/congenital-immature-pure-erythroid-leukemia-with-e-cadherin-expression
#3
Akihiro Tamura, Suguru Uemura, Atsuro Saito, Saki Okubo, Nanako Nino, Teppei Tahara, Takehito Yokoi, Kenji Kishimoto, Toshiaki Ishida, Daiichiro Hasegawa, Keiichiro Kawasaki, Seiji Yoshimoto, Hideto Nakao, Makiko Yoshida, Yoshiyuki Kosaka
Congenital pure erythroid leukemia is exceedingly rare and poses a diagnostic challenge. We report an atypical case of congenital pure erythroid leukemia that did not express typical erythroid markers. The patient presented with a high white blood cell count with blastic cells at birth. Although flow cytometric analyses of peripheral blood and bone marrow showed a large CD45-negative cell population, we did not identify any evidence of monoclonality. While the circulating blasts decreased with only supportive care, hepatomegaly with multiple nodules was accompanied by liver failure, disseminated intravascular coagulation, and development of hemophagocytic lymphohistiocytosis...
May 18, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28497710/the-complex-diagnostic-challenge-in-children-with-non-central-nervous-system-cancer-and-cerebellar-mutism
#4
Kathleen Helton, Amy L Patterson, Raja B Khan, Zsila Sadighi
Multiple etiologies should be considered in the differential diagnosis of immunocompromised patients with non-central nervous system cancer and viral infections who develop mutism. Acute cerebellitis, caused by infections or by neurotoxicity resulting from chemotherapy; paraneoplastic cerebellar degeneration; atypical posterior reversible encephalopathy syndrome; and acute disseminated encephalomyelitis may all cause mutism in such patients. This condition warrants prompt recognition and may require treatment with immunotherapy, as it may be an immune-mediated process...
January 1, 2017: Journal of Child Neurology
https://www.readbyqxmd.com/read/28488979/an-unlikely-rapid-transformation-of-myelodysplastic-syndrome-to-acute-leukemia-a-case-report
#5
Andrew Pourmoussa, Karen Kwan
INTRODUCTION: Myelodysplastic syndrome is characterized by stem-cell-derived clonal myelopoiesis with an alteration in proliferation and differentiation. This condition carries a potential for transformation to acute leukemia, primarily in cases that are accompanied by high-risk features at diagnosis. CASE PRESENTATION: A 68-year-old man with recently diagnosed myelodysplastic syndrome and Sweet syndrome (acute febrile neutrophilic dermatosis) presented to our Emergency Department with shortness of breath...
2017: Permanente Journal
https://www.readbyqxmd.com/read/28469334/clinical-profile-of-pediatric-oncology-patients-treated-by-external-beam-radiotherapy-an-institutional-experience
#6
Virender Suhag, B S Sunita, Pankaj Vats, Arti Sarin, A K Singh, Mayuri Jain
INTRODUCTION: Pediatric tumors are a heterogeneous group of malignant conditions requiring multimodal treatment, and management of such cases is at time challenging. We present the clinical profile of pediatric cancer patients who received radiation, either alone or as adjuvant to surgery and chemotherapy; in prophylactic, radical or palliative clinical setting. AIM: This study was envisaged to review our experience of pediatric oncology cases, their clinical and morphological profile, dosage schedule of radiotherapy, and the therapy induced complications...
January 2017: Indian Journal of Medical and Paediatric Oncology
https://www.readbyqxmd.com/read/28447382/quantitative-proteomic-analysis-of-ezh2-inhibition-in-acute-myeloid-leukemia-reveals-the-targets-and-pathways-that-precede-the-induction-of-cell-death
#7
Jarrod J Sandow, Giuseppe Infusini, Aliaksei Z Holik, Gabriela Brumatti, Tessa V Averink, Paul G Ekert, Andrew I Webb
PURPOSE: Chromosomal translocation of the Mixed Lineage Leukemia (MLL) locus generates fusion proteins that drive acute myeloid leukemia (AML) resulting in atypical histone methyltransferase activity and alterations in the epigenetic regulation of gene expression. Targeting histone regulators, such as Enhancer of Zeste Homologue 2 (EZH2), has shown promise in AML. Profiling differential protein expression following inhibition of epigenetic regulators in AML may help to identify novel targets for therapeutics...
April 26, 2017: Proteomics. Clinical Applications
https://www.readbyqxmd.com/read/28447248/somatic-setbp1-mutations-in-myeloid-neoplasms
#8
REVIEW
Hideki Makishima
SETBP1 is a SET-binding protein regulating self-renewal potential through HOXA-protein activation. Somatic SETBP1 mutations were identified by whole exome sequencing in several phenotypes of myelodysplastic/myeloproliferative neoplasms (MDS/MPN), including atypical chronic myeloid leukemia, chronic myelomonocytic leukemia, and juvenile myelomonocytic leukemia as well as in secondary acute myeloid leukemia (sAML). Surprisingly, its recurrent somatic activated mutations are located at the identical positions of germline mutations reported in congenital Schinzel-Giedion syndrome...
June 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28435655/a-80-year-old-woman-with-b-cell-prolymphocytic-leukemia
#9
Alparslan Merdin, Jale Yıldız, Sinan Dal Mehmet, Merih Kızıl Çakar, Hikmetullah Batgi, Emre Tekgündüz, Aykut Onursever, Fevzi Altuntaş
Prolymhocytic leukemia (PLL) is a rare subtype of lymphocytic leukemias and its cells are immature lymphocytes. It is divided into 2 subgroups: T-PLL and B-PLL according to the lymphocytic origin of the cells. Discriminating B-PLL from other diseases with clinically-similar features is important because of the different treatment approaches and follow-up programs. Hereby, we report a 80-year-old woman presenting with fatigue, leucocytosis and mild anemia. Her peripheral blood smear evaluation revealed 85% prolymphocytes with moderately condensed nuclear chromatin, prominent nucleoli, and a faintly basophilic cytoplasm...
February 23, 2017: Hematology Reports
https://www.readbyqxmd.com/read/28427923/-acute-leukemia-revealed-by-bone-magnetic-resonance-imaging-two-pediatric-case-reports
#10
C Flatrès, A Pennanéach, G Blondin, E Rivoal, S Haro, P Vic
Bone and joint pain are common causes of pediatric consultation for a variety of etiologies. The causes are mostly traumatic or infectious or have an inflammatory origin. Acute leukemia (AL) can sometimes begin with osteoarticular signs and radiological investigations such as magnetic resonance imaging (MRI) can help guide the diagnosis. We report on two cases of pediatric AL revealed by osteoarticular signs, with MRI helpful in the diagnostic procedure. In these children, the first signs were recurrent joint pain, with no blood count anomalies...
April 17, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28382853/primary-cerebellar-lymphoma-with-hodgkin-lymphoma-like-morphology-in-a-cat
#11
Yuka Yoshino, James K Chambers, Taichi Nakamori, Yuko Goto-Koshino, Kazuo Nishigaki, Hajime Tsujimoto, Naoaki Matsuki, Hiroyuki Nakayama, Kazuyuki Uchida
A 4-y-old cat exhibited neurologic signs such as wobbling, right head tilt, and intention tremor, and MRI revealed a mass in the cerebellum. The cat died 5 mo after initial presentation, and no neoplastic lesions, other than the cerebellar mass, were observed at autopsy. Histologically, large atypical cells resembling Hodgkin cells, with single large inclusion-like nucleoli, and those resembling Reed-Sternberg cells, with symmetrically arranged nuclei, had infiltrated the left side of the cerebellum and were admixed with small lymphocytes...
April 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28357109/atypical-breast-adenosquamous-carcinoma-following-acute-myeloid-leukemia-in-a-middle-aged-woman-a-case-report
#12
Seyed Mehdi Hashemi, Shokoufeh Mahmoudi Shan, Mahdi Jahantigh, Abolghasem Allahyari
Adenosquamous carcinoma of the breast is a rare cancer that develops as glands and tubules admixed with solid nests of squamous cells in a spindle cell background. Furthermore, its occurrence following AML is also rare. To the best of our knowledge, based on a review of the relevant literature, thus far there have not been any welldocumented cases. In the present case report, we report on a middle-aged woman with a 2year history of acute myeloid leukemia (AML) who was admitted to hospital due to a mass in the right breast, with concurrent cutaneous lesions on the breast...
February 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28342811/myeloid-sarcoma-presentation-diagnosis-and-treatment
#13
REVIEW
L Max Almond, Maria Charalampakis, Samuel J Ford, David Gourevitch, Anant Desai
Myeloid sarcoma is an extramedullary tumor of immature granulocytic cells. It is a rare condition, most often associated with acute myeloid leukemia (AML), although in some rare cases it may present in nonleukemic patients. It should therefore be considered as a differential diagnosis of any atypical cellular infiltrate. It may occur at any site, leading to very varied clinical presentations. Diagnosis is challenging and relies on a high index of suspicion as well as radiology, histology, immunophenotyping, and molecular analyses, which also are essential for risk stratification and treatment planning...
March 7, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28340568/chronic-lymphocytic-leukemia-skin-infiltration-mimicking-an-icd-pocket-infection-a-case-report
#14
M Snorek, A Bulava, I Vonke
BACKGROUND: We are presenting a case report on an unreported and unusual cutaneous manifestation of chronic lymphocytic leukemia in a patient with an implantable cardioverter-defibrillator (ICD). CASE PRESENTATION: A 65-year-old man with a history of chronic lymphocytic leukemia (CLL), previously treated with chlorambucil, was referred in October 2013 for extraction of a single chamber ICD due to a suspected device-related infection in the pulse generator area (left-hand side of Fig...
March 24, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28331122/an-autopsy-case-report-of-adult-t-cell-leukemia-accompanied-by-rheumatoid-arthritis-mimicking-diffuse-panbronchiolitis
#15
Tomoko Shiraishi, Hiroshi Ishimoto, Kentaro Akata, Toshinori Kawanami, Kazuhiro Yatera, Hiroshi Mukae
A 50-year-old female with a history of chronic sinusitis and rheumatoid arthritis visited our department with repetitive lower respiratory tract infections of Pseudomonas aeruginosa. Her chest CT showed diffuse panbronchiolitis-like pulmonary lesions, her blood examination revealed atypical lymphocytes, and she was serologically positive for anti-human T-lymphotrophic virus type 1 (HTLV-1) antibody. Her rheumatoid arthritis had been well-controlled after biological agent treatment followed by anti-inflammatory analgesic treatment...
2017: Journal of UOEH
https://www.readbyqxmd.com/read/28329516/precursor-b-cell-all-leukemia-cutis-resembling-lipomas-an-atypical-presentation-of-a-rare-entity-and-a-review-of-the-literature
#16
Yuan Yu Michael Huang, Melinda Liu, Jennifer S Ruth, Silvia Potenziani, Sylvia Hsu
Leukemia cutis (LC) is an extramedullary manifestationof leukemia owing to cutaneous infiltration ofneoplastic cells resulting in characteristic firm,erythematous nodules. Most cases of LC occur inpatients with acute myelogenous leukemia andchronic myelogenous leukemia. However in rarecases, LC has presented in patients with acutelymphoblastic leukemia (ALL). In these rare ALLassociatedcases, only 10 cases of precursor-B-ALL(pre-B-ALL) have been described in the literature.We report a case of a 22-year-old man with relapsingpre-B-ALL who presented with a 4-day history ofmultiple asymptomatic, soft, dome-shaped, lipomalikemounds on his scalp and chin, which exhibitedcutaneous involvement by leukemic cells...
March 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28326824/osteopontin-its-potential-role-in-cancer-of-children-and-young-adults
#17
Gabrielle Karpinsky, Aleksandra Fatyga, Malgorzata Anna Krawczyk, Madeleine Chamera, Natalia Sande, Dagmara Szmyd, Ewa Izycka-Swieszewska, Ewa Bien
OBJECTIVE: Osteopontin (OPN) is aglyco-phosphoprotein, involved in tissue remodeling, inflammation and boneresorption. In various adult neoplasms OPN was shown to correlate with cancer progression, invasiveness and metastasis. AIM: to define the role of OPN in malignancies of children and young adults. MATERIAL AND METHODS: a structured PubMed and Google Scholar literature analysis based on reports published in English between I'1995 and XII'2015...
March 14, 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/28314085/targeted-next-generation-sequencing-and-identification-of-risk-factors-in-world-health-organization-defined-atypical-chronic-myeloid-leukemia
#18
Mrinal M Patnaik, Daniela Barraco, Terra L Lasho, Christy M Finke, Kaaren Reichard, Katherine P Hoversten, Rhett P Ketterling, Naseema Gangat, Ayalew Tefferi
Atypical chronic myeloid leukemia (aCML) is an aggressive myeloid neoplasm with overlapping features of myelodysplastic syndromes (prominent granulocytic dysplasia) and myeloproliferative neoplasms (neutrophilic leukocytosis). We studied 25 molecularly-annotated and World Health Organization defined aCML patients; median age 70 years, 84% males. Cytogenetic abnormalities were seen in 36% and gene mutations in 100%. Mutational frequencies were, ASXL1 28%, TET2 16%, NRAS 16%, SETBP1 12%, RUNX1 12%, ETNK1 8%, and PTPN11 4%...
June 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28298242/migratory-large-vessel-vasculitis-preceding-acute-myeloid-leukemia-a-case-report
#19
Dinusha Chandratilleke, Anthea Anantharajah, Mauro Vicaretti, Warwick Benson, Lucinda J Berglund
BACKGROUND: Large vessel vasculitis is a rare disorder usually occurring in the context of the autoimmune conditions of giant cell arteritis and Takayasu's arteritis. Case reports have described large vessel vasculitis occurring in individuals with myelodysplastic syndrome, preceding transformation to acute myeloid leukemia. CASE PRESENTATION: A 56-year-old Afghanistan-born woman presented with fever, a tender left carotid artery, and raised inflammatory markers...
March 16, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28288720/clonal-b-cell-lymphocytosis-of-marginal-zone-origin
#20
REVIEW
Aliki Xochelli, David Oscier, Kostas Stamatopoulos
Monoclonal B cell Lymphocytosis (MBL) is the term used to characterize individuals presenting with lymphocytosis in the absence of lymphadenopathy, organomegaly or any other features suggestive of an active disease. Based on the immunophenotypic findings, MBL cases are sub-categorized into chronic lymphocytic leukemia (CLL)-like, atypical CLL and non-CLL MBL. The latter corresponds to cases with immunophenotypic features suggestive of post germinal center derivation and still represents a diagnostic conundrum...
March 2017: Best Practice & Research. Clinical Haematology
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