Subpoblaciones de linfocitos T en adultos mayores cubanos con leucemia linfoide crónica / Subpopulations of T lymphocytes in Cuban older adults with chronic lymphoid leukemia

Introducción: la inmunosenescencia está asociada con un mayor riesgo de desarrollo de cáncer. Dentro de las hemopatías malignas que afectan a este grupo de edad, está la leucemia linfoide crónica (LLC), caracterizada por trastornos en la inmunidad adaptativa que incluye las subpoblaciones de linfocitos T. Objetivo: Determinar la frecuencia de las subpoblaciones de linfocitos T en los pacientes adultos mayores con leucemia linfoide crónica evaluados en el Instituto de Hematología e Inmunología de Cuba. Métodos: Se realizó un estudio transversal en 30 adultos mayores con leucemia linfoide crónica. Se cuantificaron los linfocitos TCD3+CD4+ y TCD3+CD8+ en sangre periférica por citometría de flujo. Para la lectura y el análisis de los datos se empleó un citómetro de flujo Beckman Coulter Gallios. Se utilizaron los valores porcentuales, la media y la desviación estándar. Se consideró estadísticamente significativo si p≤0.05. Resultados: Hubo un predominio de hombres que representaron el 56,7 por ciento y del grupo de 70-79 años de edad. No se reportó ningún adulto mayor con LLC con valores altos ni normales de linfocitos TCD3+CD4+. Predominaron los hombres con valores bajos porcentuales de linfocitos TCD3+CD4+, TCD3+CD8+ e inversión del índice CD4/CD8 en relación con las mujeres. Conclusiones: Los adultos mayores con LLC presentan alteraciones en el número de las subpoblaciones de linfocitos T. La acción de estas células en relación al crecimiento de células B malignas aún es desconocido y resulta importante determinar si esto puede reflejar un intento de evasión de las células tumorales al control inmunológico(AU)

Introduction: Immunosenescence is associated with an increased risk of cancer development. Among the malignant hemopathies that affect this age group, it is chronic lymphoid leukemia (CLL), characterized by disorders in adaptive immunity, which include subpopulations of T lymphocytes. Objective: To determine frequency of T lymphocyte subpopulations in older adult patients with chronic lymphoid leukemia evaluated at the Institute of Hematology and Immunology of Cuba. Methods: A cross-sectional study was conducted in 30 older adults with chronic lymphoid leukemia. TCD3+CD4+ and TCD3+CD8+ lymphocytes were quantified in peripheral blood by flow cytometry. A Beckman Coulter Gallios flow cytometer was used to read and analyze the data. The percentage values, the mean and the standard deviation were used. It was considered statistically significant if p≤0.05. Results: There was a predominance of men who represented 56.7 percent and the age group of 70-79 years. No older adults with CLL with high or normal values of TCD3+CD4+ lymphocytes were reported. Men predominated with low percentage values of TCD3+CD4+, TCD3+CD8+ lymphocytes and inversion of the CD4/CD8 ratio in relation to women. Conclusions: Older adult with CLL present alterations in the number of T lymphocyte subpopulations. The role of these cells in relation to the growth of malignant B cells it is unknown and it turns out important to determine if this may reflect an attempt to evade tumor cells from immune control(AU)

Microorganismos aislados de hemocultivos en niños con leucemia y linforma: Seis años de seguimiento / Microorganisms isolated from blood cultures in children with leukemia and lymphoma: six years of follow-up

Las Leucemias y linfomas constituyen las enfermedades oncológicas más frecuentes en pediatría y las bacteriemias representan infecciones graves en estos pacientes. Objetivos: describir los microorganismos aislados de sangre en pacientes con leucemia aguda o linfoma pediátrico; comparar la incidencia de aislamientos según enfermedad de base; detallar las variaciones en la incidencia de dichos aislamientos y la evolución de su resistencia antimicrobiana. Estudio retrospectivo, observacional. Se incluyeron 823 episodios de bacteriemia en 467 pacientes pediátricos, entre julio-2016 y junio-2022, dividido en tres períodos (período-1: años 2016- 2018, período-2: años 2018-2020, período-3: años 2020-2022). Se aislaron 880 microorganismos: 55,3% gram negativos (GN), 40% gram positivos (GP) y 4,7% levaduras. En GN predominaron: enterobacterias (72%) y en GP: estreptococos del grupo viridans (SGV) (34,1%). Se encontró asociación entre LLA-enterobacterias (p=0,009) y LMA-SGV (p<0,001). Hubo aumento de GN entre los períodos 1 y 3 (p=0,02) y 2 y 3 (p=0,002) y disminución de GP entre 2 y 3 (p=0,01). Se registraron los siguientes mecanismos de resistencia: BLEE (16,4%), carbapenemasas: KPC (2,5%); MBL (2,7%) y OXA (0,2%); meticilinorresistencia en Staphylococcus aureus (20%) y estafilococos coagulasa negativos (95%), vancomicina resistencia en Enterococcus spp. (39%), SGV no sensibles a penicilina (44%) y a cefotaxima (13%). Hubo aumento de MBL entre los períodos 1 y 2 (p=0,02) y una tendencia en disminución de sensibilidad a penicilina en SGV entre el 1 y 3 (p=0,058). El conocimiento dinámico y análisis de estos datos es esencial para generar estadísticas a nivel local, fundamentales para el diseño de guías de tratamientos empíricos (AU)

Leukemias and lymphomas are the most common cancers in children and bacteremia is a severe infection in these patients. Objectives: to describe the microorganisms isolated from blood in pediatric patients with acute leukemia or lymphoma; to compare the incidence of isolates according to the underlying disease; and to detail the variations in the incidence of these isolates and the evolution of their antimicrobial resistance. Retrospective, observational study. We included 823 episodes of bacteremia in 467 pediatric patients seen between July-2016 and June-2022, divided into three periods (period-1: 2016- 2018, period-2: 2018-2020, period-3: 2020-2022). A total of 880 microorganisms were isolated: 55.3% were gram-negative (GN), 40% gram-positive (GP) and 4.7% yeasts. In GN there was a predominance of: enterobacteria (72%) and in GP viridans group streptococci (VGS) (34.1%). An association was found between ALL-enterobacteria (p=0.009) and AML-VGS (p<0.001). There was an increase in GN between periods 1 and 3 (p=0.02) and 2 and 3 (p=0.002) and a decrease in GP between 2 and 3 (p=0.01). The following resistance mechanisms were recorded: BLEE (16.4%), carbapenemases: KPC (2.5%), MBL (2.7%), and OXA (0.2%); methicillin resistance in Staphylococcus aureus (20%) and coagulase negative staphylococci (95%), vancomycin resistance in Enterococcus spp. (39%), VGS resistant to penicillin (44%) and to cefotaxime (13%). There was an increase in MBL between periods 1 and 2 (p=0.02) and a decreasing trend in penicillin sensitivity in VGS between periods 1 and 3 (p=0.058). Dynamic knowledge and analysis of these data is essential to generate statistics at the local level, which is fundamental for the design of empirical treatment guidelines (AU)

Adiposity in childhood cancer survivors: insights into obesity physiopathology / Adiposidade em pacientes tratados por câncer na infância: entendendo a fisiopatologia da obesidade

As childhood cancer treatment has become more effective, survival rates have improved, and a number of complications have been described while many of these patients reach adulthood. Obesity is a well-recognized late effect, and its metabolic effects may lead to cardiovascular disease. Currently, studies concerning overweight have focused on acute lymphocytic leukemia and brain tumors, since they are at risk for hypothalamic-pituitary axis damage secondary to cancer therapies (cranial irradiation, chemotherapy, and brain surgery) or to primary tumor location. Obesity and cancer have metabolic syndrome features in common. Thus, it remains controversial if overweight is a cause or consequence of cancer, and to date additional mechanisms involving adipose tissue and hypothalamic derangements have been considered, comprising premature adiposity rebound, hyperinsulinemia, leptin regulation, and the role of peroxisome proliferator-activated receptor γ. Overall, further research is still necessary to better understand the relationship between adipogenesis and hypothalamic control deregulation following cancer therapy.

Os avanços do tratamento contra o câncer infantil têm resultado no aumento da sobrevida e das complicações, à medida que os pacientes atingem a maioridade. A obesidade é um evento reconhecido, e seus efeitos metabólicos levam à doença cardiovascular. Atualmente, o estudo da obesidade tem enfocado a leucemia linfocítica aguda e os tumores cerebrais, já que ambos têm risco para lesões hipotalâmicas, secundárias às terapias (irradiação cranial, quimioterapia, e cirurgia) ou à localização do tumor. Obesidade e câncer têm em comum fatores para síndrome metabólica. Entretanto, a relação de causa e efeito entre obesidade e câncer permanece controversa, sendo que são considerados outros mecanismos envolvendo o tecido adiposo e lesões hipotalâmicas, como o rebote precoce de adiposidade, hiperinsulinemia, regulação da leptina, e o papel do receptor ativado por proliferadores de peroxissoma γ. Concluindo, mais estudos são necessários para entender a relação entre adipogênese e descontrole hipotalâmico em sobreviventes de câncer.

Unusual lymphoblastic leukemia/lymphoma in Eastern Iran.

Lymphoblastic lymphoma-leukemia (LBLL) most commonly presents with mediastinal masses (50-75%), while pleural and pericardial effusion may also be present. Lymphadenopathy usually in the neck, axilla or supraclavicular regions, is considered as another typical presentation of the disease. This is a case report of a six-year-old boy with unusual huge enlargement of maxilla, mandible and soft palate as well as gingival hypertrophy which led to secondary respiratory and feeding difficulties. Morphologic and flowcytometric evaluation of bone marrow aspiration showed that it was a T cell type acute leukemia which may be due to dissemination of a lymphoblastic lymphoma and considered as a case of lymphoma-leukemia. After appropriate treatment, the symptoms of the patient relieved significantly and he is in complete remission for about one year.

Glioblastoma multiforme in a child with acute lymphoblastic leukemia: case report and review of literature.

An 11-year-old boy with acute lymphoblastic leukemia had received prophylactic cranial irradiation (1800 cGy /10 fractions) and intrathecal methotrexate. Five years later, he developed a glioblastoma multiforme in the right frontal region while the leukemia was in remission. It is possible that the glioma may have been induced by radiation and /or chemotherapy.

Chronic lymphocytic leukaemia terminating into plasma cell leukaemia.

Transformation of chronic lymphocytic lymphoma into plasma cell leukaemia is extremely rare. The diagnosis is made on if the circulating plasma cells in peripheral blood is in excess of 2000 cells/mm3.

Superior vena cava syndrome.

OBJECTIVE: In order to study the clinical profile of children presenting with superior vena cava syndrome (SVCS), case records of all children presenting with SVCS over a 10-year period were retrospectively analyzed. METHODS: Twenty one children (20 males and 1 female) with a median age of 10.0 years (range 5.0 to 12.0 years) were detected to have an underlying hematological malignancy. T-cell acute lymphoblastic leukemia accounted for a major share (57%) in the underlying etiology; 33% of the subjects had non-Hodgkin's lymphoma (T-cell lymphoblastic lymphoma). RESULT: No Patient required radiotherapy or urgent thoracotomy. Among survivors (n=11), who were alive and well at the time of writing this report, the median follow-up was 6.5 years, (range 0.5-9.6 years). T-cell ALL and lymphoblastic lymphoma are common underlying causes of SVCS in Indian children. CONCLUSION: The value of diagnostic interventions performed under local anaesthesia and prebiopsy corticosteroids usage was found to be reassuring since long-term survival without disease is achievable.

Dermatomiositis y malignidad: a propósito de un caso de carcinoma mamario / Dermatomyositis and malignancy: case report associated with breast cancer

Se presenta una paciente de 56 años afectada simultáneamente de carcinoma de mama y dermatomiositis (DM) cuya sintomatología remitió con el tratamiento quirúrgico del tumor. En pacientes adultos con DM está justificada la búsqueda periódica de cáncer

Compromiso óseo seudo-mielomatoso en leucemia linfoide crónica / Chronic lymphocytic leukemia with pseudomyelomatous osteolytic lesion

Se describe un caso de leucemia linfoide crónica en un paciente hombre de 75 años de edad, con afección lítica ósea seudo-mielomatosa en el cráneo, orientándose la discusión a excluir otras posibles causas de lesiones osteolíticas en el contexto clínico de la enfermedad linfoproliferativa maligna. La frecuencia real del compromiso óseo en la leucemia linfoide crónica es de cerca de 10 por ciento. Este compromiso va desde la osteoporosis generalizada hasta la presencia de erosiones óseas que, por su aspecto geográfico lacunar, parecen lesiones mielomatosas. Dada la sobreposición histopatológica de las neoplasias linfoproliferativas, a veces es difícil hacer un diagnóstico preciso de leucemia linfoide crónica, teniéndose que recurrir al aspecto clínico. El diagnóstico diferencial con otras neoplasias linfoproliferativas se fundamenta básicamente en la presencia de linfocitosis absoluta en sangre periférica de más de 10 X 109/L, con células linfoides

Inhalación prolongada de óxido nítrico en el distress respiratorio agudo del adulto en un caso / Prolongued inhalation of nitric oxid in acute respiratory adult distress in 1 case

Inhalation therapy with nitric oxide has been suggested as beneficial in the adult respiratory distress syndrome, however there are few reports of its prolonged use. We report a patient with a chronic lymphocytic leukemia that developed an adult respiratory distress syndrome with severe hypoxemia, refractory to conventional therapeutic measures, during the course of a septic shock. The patient received nitric oxide (19 ppm) improving arterial oxygen saturation and allowing the reduction of FiO2 to 40 percent. The patient died 5 days later due to a multiple organ failure

Hemopatías: sus manifestaciones orales / Hemopathies: it's oral manifestations

La mucosa oral es frecuentemente asiento de lesiones vinculadas a enfermedades sistémicas, y dentro de éstas destacamos las discrasias sanguíneas. Se estudiaron en el Hospital de Clínicas José de San Martín, 15 pacientes con patologías de la mucosa oral cuyas enfermedades de base fueron leucemia, aplasia medular y linfoma. De estos, 10 presentaron manifestaciones hemorragíparas, 7 pacientes con lesiones ulceronecróticas y 2 casos de hipertrofia gingival por infiltración neoplásica

Artrite como primeira manifestaçäo de leucemia em crianças / Arthritis like first manifestation of leukemia in children

Säo apresentadas as manifestaçöes clínicas, laboratoriais e radiológicas de seis crianças encaminhadas para esclarecimento de quadro articular cujo diagnóstico definitivo foi leucose, linfoblástica aguda. Um breve histórico sobre o envolvimento osteoarticular na leucemia é revisto, enfatizando as dificuldades diagnósticas quando o quadro inicial é predominantemente articular e o hemograma näo é caracterizado

Talassemia alfa adquirida nas doenças linfo e mieloproliferativas / Acquired alpha thalassemia in lympho and myeloproliferative disorders

Foram analisados 60 pacientes portadores de doenças linfo e mieloproliferativas (DLMP) com o objetivo de determinar a prevalência da associaçäo com a talassemia alfa. A talassemia alfa foi diagnósticada pela presença de agregados intra-eritrocitários de Hb H. Os resultados mostraram que 46,6% dos portadores de DLPM têm talassemia alfa; no grupo controle, composto por pessoas aparentemente sadias, a prevalência de talassemia alfa foi de 3,9%