El niño plateado: Síndrome de Chediak-Higashi / The Silver Child: Chediak-Higashi Syndrome

El Síndrome de Chediak-Higashi (SCH) es una patología de herencia autosómica recesiva debido principalmente a mutaciones del gen regulador del tráfico lisosómico (LYST), causando grados dermatológicamente diferentes de albinismo óculocutáneo, infecciones recurrentes, disfunción fagocítica primaria, en el desarrollo y proliferación de todas las líneas celulares. Se presenta caso de preescolar masculino de 2 años de edad, ingresado por aumento de volumen bilateral en región cervical y fiebre, en malas condiciones generales, con áreas de hiperpigmentación en piel, cabello y cejas de coloración grisácea, adenopatías generalizadas y visceromegalias; leucocitosis con linfocitosis y neutropenia, anemia, trombocitopenia, hipoalbuminemia, hipertrigliceridemia e hiperferritinemia; en vista de la infrecuente coexistencia de dichas características con albinismo óculocutáneo; es evaluado por hematología y dermatología evidenciándose inclusiones citoplasmáticas y melanosomas gigantes, respectivamente, compatibles con SCH, confirmándose diagnóstico. El conocimiento del SCH es importante para la oportuna sospecha clínica-diagnóstica e inicio de protocolos terapéuticos en consenso, que garanticen un manejo eficaz para su sobrevida(AU)

Chediak-Higashi syndrome (SCH) is an auto somal recessive in herited pathology mainly due to mutations ofthe LYST gene, causing dermatologically different degrees of oculocutaneous albinism, recurrent infections, primary phagocytic dysfunction, in the development and proliferation of all cell lines. We present a case of a 2-year-old male preschool, admitted due to bilateral volume increase in thecervical region and fever, in poor general conditions, with areas of hyperpigmentation in skin, hair and eyebrows of grayish coloration, generalized lymphadenopathy and visceromegaly; leukocytosis with lymphocytosis and neutropenia, anemia, thrombocytopenia, hypoalbuminemia, hypertriglyceridemia,and hyperferritinemia; in view of the infrequent coexistence of these characteristics with oculocutaneous albinism; it isevaluated by hematology and dermatology, showing cytoplasmicinclusions and giant melanosomes, respectively, compatiblewith SCH, confirming the diagnosis. Knowledge of SCH is important for timely clinical-diagnostic suspicion and initiation of consensus therapeutic protocols that guarantee effective management for survival(AU)

Clinical aspects and main diagnostic methods of Chediak-Higashi syndrome

Chediak-Higashi syndrome is a disorder caused by a mutation in the LYST gene and characterized by immunodeficiency, oculocutaneous albinism, and neurological dysfunction resulting from changes in neutrophils. Homozygotes die in the first decade of life. The study is a literature review from different sources. We extracted articles published between 2000 and 2018 from SciELO, LILACS, MEDLINE (via PubMed), and Google Scholar databases. Our main objective was to report pathophysiology, clinical presentation, and the most common diagnostic methods. The syndrome affects the hematological and neurological systems, and laboratory diagnosis is first made by the presence of giant granules in leukocytes, mainly neutrophils in peripheral blood and bone marrow. A definitive diagnosis is made by cytochemical reaction (myeloperoxidase) and detection of mutation by molecular methods. (AU)

Dr. Antonio María Béguez César (1895-1975): fundador y maestro de la Sociedad Cubana de Pediatría de Santiago de Cuba / Dr. Antonio María Béguez César (1895-1975): founder and teacher of the Pediatrics Cuban Society in Santiago de Cuba

Con este artículo se buscó ampliar los datos biográficos del eminente científico cubano Antonio María Béguez César y divulgar aspectos poco conocidos de su prolífica existencia. Para ello se consultaron los archivos personales de la familia Béguez López y el índice de autores y materias del Boletín de la Sociedad Cubana de Pediatría y de la Revista Cubana de Pediatría, donde se consigna su bibliografía activa; además, se analizaron documentos de la época y se consideraron los testimonios de familiares, colegas y amigos del ilustre pediatra santiaguero. El trabajo forma parte del proyecto investigativo "Estrategia para incrementar la visibilidad del hallazgo científico del pediatra Dr. Antonio María Béguez César", que revela al descubridor de la "neutropenia crónica maligna familiar con granulaciones atípicas de los leucocitos", entidad clínica inscrita entre los diez hitos de la inmunología cubana, que ha sido erróneamente divulgada en el mundo científico-médico como síndrome de Chédiak-Higashi.

This work aimed at widen the biographical data of the eminent Cuban scientist Antonio María Béguez César and to spread not very well-known aspects of his prolific existence. The personal files of Béguez López family and the index of authors and matters of the Pediatrics Cuban Society Bulletin and the Pediatrics Cuban Magazine were consulted, where his active bibliography is consigned; also, documents of that time were analyzed and testimonies of family, colleagues and friends of the distinguished pediatrician from Santiago were considered. The work is part of the investigative project "Strategy to increase the visibility of the pediatrician Dr. Antonio María Béguez César scientific finding" that reveals the discoverer of "the family malignant chronic neutropenia with atypical granulations of the leukocytic cells", clinical entity inscribed among the ten landmarks of the Cuban immunology that has been erroneously spread in the scientific-medical world as Chediak-Higashi syndrome.

Identification of a novel CHS1/LYST variant in a Chinese pedigree affected with Chediak-Higashi syndrome / 中华医学遗传学杂志

OBJECTIVE@#To detect pathological variant in two patients with Chediak-Higashi syndrome (CHS) from a consanguineous family and to explore its genotype-phenotype correlation.@*METHODS@#Clinical data was collected for this pedigree. Genomic DNA was prepared from probands' peripheral leukocytes and their relatives' fingernail. Whole exome sequencing and Sanger sequencing were carried out to detect potential variant of the LYST gene.@*RESULTS@#The proband presented with partial oculocutaneous albinism, immunodeficiency and acidophilic inclusion body in bone marrow and blood smears. A novel homozygous nonsense variant c.8782C>T (p.Gln2928*) was identified in exon 34 of the LYST gene in the sib pair. The same variant was found to be in heterozygous status in 6 unaffected individuals from the pedigree.@*CONCLUSION@#Above result enriched the mutational spectrum of CHS and provided a basis for genetic counseling and prenatal diagnosis for this pedigree.

Contribuciones de Moisés y Alejandro Chediak a la Inmunología, la Hematología y el Laboratorio Clínico en Cuba / Contributions of Moises and Alejandro Chediak to Immunology, Hematology and Clinical Laboratory in Cuba

Los doctores Moisés y Alejandro Chediak Ahuayda, cubanos de ascendencia libanesa, realizaron importantes contribuciones a la Inmunología y otras ciencias médicas. El doctor Moisés Chediak fue director del Laboratorio Clínico Central del Hospital General Calixto García desde 1940, año en que fundó el primer banco de sangre de Cuba. Llegó a ser Profesor Auxiliar de Microscopía y Química Clínica de la Universidad de la Habana. Entre sus artículos se destacan el primer caso de anemia de Cooley en un niño en Cuba, así como el reporte de una nueva forma de inmunodeficiencia primaria conocida como síndrome de Béguez-Chediak-Higashi. Participó en numerosos eventos en América, Europa y Asia, y fue un miembro reconocido de las Sociedades Cubanas de Patología Clínica, Microbiología y de Pediatría, así como de organizaciones internacionales. Alejandro Chediak llamó la atención de la comunidad científica al desarrollar un método que solo requería de una gota de sangre en papel para el diagnóstico serológico de la sífilis. La microrreacción de Chediak fue ampliamente evaluada, adoptada y modificada en Estados Unidos, Argentina, Alemania, Polonia, México, Chile, Brasil y Francia. Diseñó un dispositivo útil para diversas técnicas de laboratorio, como la aglutinación de grupos sanguíneos, el cual fue patentado en Cuba y Estados Unidos. Fue profesor de Física Biológica de la Facultad de Medicina de la Universidad de La Habana. Los hermanos Chediak Ahuayda, quienes se formaron y alcanzaron sus más importantes resultados profesionales en nuestro país, ocupan un lugar destacado en la historia de la medicina cubana del siglo XX(AU)

Doctors Moises and Alejandro Chediak Ahuayda, whose were born in Cuba and had Lebanese ascendants, made important contributions to Immunology and other medical sciences. Doctor Moises Chediak was director of the Central Clinical Laboratory of the General Calixto Garcia Hospital from 1940, the same year when he founded the first blood bank in Cuba. He was Associate Professor of Microscopy and Clinical Chemistry at the University of Havana. The first report in Cuba of a case of Cooley's anemia in a child, and a new form of a primary immunodeficiency, known as Beguez-Chediak-Higashi syndrome, were among his most relevant papers. He participated in many congressesin America, Europe and Asia; he was an outstanding member of the Cuban Societies of Clinical Pathology, Microbiology and Pediatrics, as well as various international organizations. Alejandro Chediak got the attention of the scientific community when he developed a method that required only a drop of blood in a paper for the serological diagnostics of syphilis. Chediak's microrreaction was widely evaluated, adopted and modified in the United States, Argentina, Germany, Poland, Mexico, Chile, Brazil and France. He designed a device useful for many laboratory assays, including blood group agglutination, patented in Cuba and the United States. He was professor of Biological Physics at the Faculty of Medicineof theUniversity of Havana. The brothers Chediak Ahuayda, who were trained and obtained their most important professional achievements in our country, have a relevant place in the history of Cuban medicine during XX century(AU)

Síndrome de Béguez-Steinbrinck-Higashi: un nuevo epónimo para el síndrome de Chediak-Higashi / Béguez-Steinbrinck-Higashi syndrome: a new eponymous for the Chediak-Higashi syndrome

En diciembre de 1943, el Dr. Antonio María Béguez César detalló en el Boletín de la Sociedad Cubana de Pediatría los aspectos clínicos y hematológicos de una rara afección que padecieron tres niños de una familia santiaguera, quienes fallecieron en sus primeros años de vida. No había informes sobre hallazgos similares en la bibliografía médica, por lo cual se consideró la primera descripción de una enfermedad denominada por él como neutropenia crónica maligna familiar con granulaciones atípicas de los leucocitos, que aún hoy suele divulgarse erróneamente como síndrome de Chediak-Higashi y no como síndrome de Béguez-Steinbrinck-Higashi. Esta enfermedad es una inmunodeficiencia primaria causada por mutaciones en el gen regulador de la función lisosomal, capaz de alterar la formación del fagolisosoma en el neutrófilo y determinar la presencia de gránulos secretores gigantes en su interior, asociadas a un predominio de infecciones recurrentes generadas por bacterias piógenas. Aquí se realiza un recuento histórico del descubrimiento de esta entidad y se actualiza su fisiopatología(AU)

On December 1943, Dr. Antonio María Béguez César detailed in the Journal of the Cuban Pediatric Society the clinical and hematologic aspects of a rare disorder suffered by three children from a family in the locality, who expired during the first years of their lives in Santiago de Cuba. At that moment there was no report about similar findings in the medical literature, therefore it is considered the first description of a disease denominated by him as familial malignant chronic neutropenia with atypical granulations of leucocytes, misleadingly revealed as Chediak-Higashi syndrome instead of Béguez-Steinbrinck-Higashi syndrome. This disease consists of a primary immunodeficiency induced by mutations in the regulator gen of the lysosomal function, which is able to alter the formation of phagolysosoma in the neutrophil and determine the presence of giant secretor granules associated with the predominance of recurrent infections provoked by pyogen bacteria. Here, a brief history of it's discovery as well as an updating of it's physiopathology are carried out(AU)

Fase acelerada da síndrome de Chediak-Higashi: revisão de literatura / Accelerated phase of Chediak-Higashi syndrome: review of literature

Indivíduos afetados pela síndrome de Chediak-Higashi se apresentam clinicamente com diversas alterações orgânicas, a partir de mutações que afetam a função fagocitária e do gene regulador do tráfego lisossomal. A forma acelerada da síndrome cursa com uma série de alterações hematológicas e sistêmicas, sendo grave e usualmente incorrendo em morte precoce. O objetivo do artigo foi realizar uma pesquisa na literatura acerca da fase acelerada da síndrome de Chediak-Higashi. Foi realizada a busca nas bases de dados: PubMed, The Cochrane Library e SciELO, por estudos em humanos publicados em inglês, espanhol ou português nos últimos 15 anos. Devido a seu nível de gravidade, a síndrome de Chediak-Higashi demonstra a importância de seu conhecimento pelos profissionais médicos a fim de reduzir o número de subdiagnósticos, consequentemente diminuindo as taxas de mortalidade e promovendo melhora na qualidade de vida de seus portadores.

Individuals affected by Chediak-Higashi syndrome present themselves clinically with several organic alterations, from mutations that affect the phagocytic and the functions of the lysosomal traffic regulator gene. The accelerated form of the syndrome presents with a series of hematological and systemic alterations, being serious and usually incurring in early death. The objective of this paper was to develop a literature review about the accelerated phase of Chediak-Higashi syndrome. The source was developed at the following databases: PubMed, The Cochrane Library, and SciELO, being included human studies published in English, Spanish or Portuguese in the last 15 years. Due to its severity, Chediak-Higashi syndrome demonstrates the importance of its knowledge by medical professionals in order to reduce the number of underdiagnostics, consequently reducing mortality rates and promoting improvement in the quality of life of the patients.

Síndrome de Chediak-Higashi em fase acelerada: um relato de caso / Accelerated Chediak-Higashi syndrome: case report

A síndrome de Chediak-Higashi (CHS) é um distúrbio genético autossômico recessivo decorrente de uma mutação no gene regulador do transporte lisossomal (LYST ou CHS1). Os sintomas da síndrome são resultado de alterações funcionais de melanócitos, plaquetas, neutrófilos e células natural killer, e incluem albinismo parcial, fotossensibilidade, infecções recorrentes, principalmente bacterianas, linfocitose hemofagocítica, sangramentos e manifestações neurológicas, como neuropatia central e periférica, perda de sensibilidade, fraqueza muscular, ataxia cerebelar e déficit cognitivo. Aproximadamente 85% dos casos se apresentam como a forma avançada, caracterizada por pancitopenia, hemofagocitose e infiltrado linfocítico em todos os órgãos, determinando falência múltipla dos órgãos. Nesse estudo é relatado o caso de uma paciente diagnosticada com a síndrome aos 8 anos de idade, apresentando a doença já em fase avançada, além de uma rápida revisão bibliográfica sobre a doença em questão.

Chediak-Higashi syndrome (CHS) is an autosomal recessive genetic disorder caused by a mutation in the lysosomal trafficking regulator gene (LYST or CHS1). Symptoms of the syndrome result from functional abnormalities in melanocytes, platelets, neutrophils and natural killer cells and include partial albinism, photosensitivity, recurrent infections (mainly bacterial), hemophagocytic lymphohistiocytosis, bleeding and neurological manifestations such as central and peripheral neuropathy, loss of sensitivity, muscle weakness, cerebellar ataxia and cognitive deficit. Approximately 85% of the cases present the advanced form, characterized by pancytopenia, hemophagocytosis and lymphocyte infiltration of all organs, determining multiple organ failure. This study reports the case of a patient diagnosed with the syndrome at 8 years of age, already at an advanced stage. A brief review of the literature available on the condition is presented.

Analysis of clinical characteristics and genetic mutation in a pedigree affected with Chediak-Higashi syndrome / 中华医学遗传学杂志

<p><b>OBJECTIVE</b>To explore the genetic basis for a pedigree affected with Chediak-Higashi syndrome (CHS).</p><p><b>METHODS</b>Clinical data of two CHS patients from the pedigree was collected and analyzed. Targeted next generation sequencing and Sanger sequencing were conducted to detect potential mutation of the LYST gene.</p><p><b>RESULTS</b>Both patients presented immunodeficiency, oculocutaneous albinism, and acidophilic inclusion body on bone marrow and blood smears. A homozygous c.6077_6078insA (p.Tyr2026Terfs) mutation was detected in the LYST gene in both patients.</p><p><b>CONCLUSION</b>Genetic testing can play an important role in the diagnosis of CHS.</p>

A novel frameshift mutation of Chediak-Higashi syndrome and treatment in the accelerated phase

Chediak-Higashi syndrome (CHS) is a rare autosomal recessive immunodeficiency disease characterized by frequent infections, hypopigmentation, progressive neurologic deterioration and hemophagocytic lymphohistiocytosis (HLH), known as the accelerated phase. There is little experience in the accelerated phase of CHS treatment worldwide. Here, we present a case of a 9-month-old boy with continuous high fever, hypopigmentation of the skin, enlarged lymph nodes, hepatosplenomegaly and lung infection. He was diagnosed with CHS by gene sequencing, and had entered the accelerated phase. After 8 weeks of therapy, the boy had remission and was prepared for allogenic stem cell transplantation.

Síndrome de Chédiak-Higashi: relato de caso em indivíduo afrodescendente / Chediak-Higashi syndrome: case report in afro-descendant individual

This is a Chediak-Higashi Syndrome (CHS) case report in afro-descendant individual, male, 3 months old, born from consanguineous union. On admission he had fever for a month, unresolved pneumonia, and hepatosplenomegaly. He evolved to bacterial sepsis, septic shock, and death. CHS presents quantitative and morphological and hematological changes. Abnormal leukocyte inclusions are the pathognomonic finding of the disease; its recognition and differentiation from other leukocyte inclusions is essential for diagnosis and institution of therapy. Early diagnosis of CHS increases the life expectancy of the individual and provides appropriate therapeutic approach for patients affected by the disease...

Trata-se de relato de caso de síndrome de Chediak-Higashi (SCH) em indivíduo afrodescendente, sexo masculino, 3 meses de idade, filho de união consanguínea. Apresentava na admissão febre há um mês, pneumonia não resolvida e hepatoesplenomegalia. Evoluiu para sepse bacteriana, choque séptico e óbito. A SCH apresenta alterações hematológicas, morfológicas e quantitativas. As inclusões leucocitárias anormais constituem achado patognomônico da doença e seu reconhecimento e sua distinção de outras inclusões leucocitárias é fundamental para diagnóstico e instituição da terapêutica. O diagnóstico precoce da SCH aumenta a expectativa de vida do indivíduo e proporciona abordagem terapêutica adequada aos pacientes acometidos pela doença...

Chediak Higashi Syndrome with Recurrent Upper Respiratory Tract Infection.

A four-year old child presented with history of recurrent infections since birth, mostly upper respiratory tract infections or sino-pulmonary involvement and moderate grade fever with symptomatic relief on antibiotics and antipyretic medications. We present this case which was diagnosed as respiratory tract infection with neutropenia consistent with Chediak-Higashi syndrome(CHS), with a brief review of this rare genetic clinical entity.

Chediak-Higashi Syndrome and Premature Exfoliation of Primary Teeth

The Chediak-Higashi syndrome (CHS) is a rare hereditary fatal disease, if not treated. These changes are associated with various diseases and syndromes that mainly cause periodontal disease and thus the premature loss of teeth. This paper describes the monitoring of premature loss of primary teeth that began when the child was 5 years old. On presentation his teeth were mobile and there was a history of gingival bleeding. Panoramic radiography revealed generalized and severe bone loss, and the teeth showed no bony support enough for their stability. Blood test was ordered to assess the overall health of the child and giant cells with cytoplasmic granules were found, confirming the diagnosis of CHS. The management of periodontal disease focused on the control of infection and bacterial plaque by mechanical and chemical methods.

A síndrome de Chediak-Higashi (CHS) é uma doença rara hereditária e fatal se não for tratada. Estas alterações estão associadas com várias doenças e síndromes que, principalmente, causa a doença periodontal assim como perda prematura de dentes. Este artigo descreve o monitoramento de perda prematura de dentes decíduos, que começou quando a criança tinha 05 anos. Na apresentação os dentes estavam com mobilidade e apresentava sangramento gengival. As radiografias panorâmicas revelaram perda óssea generalizada e grave, e os dentes sem suporte ósseo suficiente para a sua estabilidade. Foi realizada o exame de sangue para avaliar a saúde geral da criança no qual foi encontrado células gigantes com grânulos citoplasmáticos, confirmando o diagnóstico de CHS. O tratamento da doença periodontal por meio de métodos mecânicos e químicos são necessários para controle da infecção e da placa bacteriana.

Screening for cytotoxic defects with flow cytometric detection of CD107α on natural killer cells and cytotoxic lymphocyte cells / 中华儿科杂志

<p><b>OBJECTIVE</b>To establish a novel flow cytometry-based assay for measuring the expression of lysosomal-associated membrane protein 1 (LAMP-1, CD107α) on the cell surface of natural killer (NK) cells and cytotoxic T lymphocyte (CTL) and evaluate the screening value of this assay for cytotoxic defects-related diseases such as familial hemophagocytic lymphopro-liferative (FHL) syndrome.</p><p><b>METHOD</b>Three suspected Chediak-Higashi Syndrome (CHS) patients, three suspected FHL patients and 10 healthy children were enrolled in the study from October 2010 to June 2011. Their PBMCs were separated and activated overnight with IL-2. After the granule release of NK cells activated by phytohemagglutinin (PHA) and CD8+T cells by anti-CD3, the CD107α expression were analyzed by flow cytometry. The peripheral blood DNA and RNA of the patients were extracted to analyze the pathogenic genes via DNA-PCR/RT-PCR and direct sequencing.</p><p><b>RESULT</b>The CD107α expression on CTL in the ten healthy children significantly increased after activation by anti-CD3 [(0.18 ± 0.07)% vs. (4.47 ± 2.36)%, P < 0.05] and NK cells after activation by PHA [(0.27 ± 0.07)% vs. (5.80 ± 2.83)%, P < 0.05]. The frequency of CD107α-expression NK cells in three suspected CHS after activation was significantly elevated when compared with the healthy control [0.5%, 0.6% vs. (5.80 ± 2.83)%] except patient 2. After the anti-CD3 activation, the frequency of CD107α expression on CTL cells also showed no significant difference [0.3%, 0.9%, 0.2% vs. (4.47 ± 2.36)%] in three patients. All of their mean fluorescence intensity (MFI) showed the same trend. Patient 1 and 3 were identified to have LYST mutations (Patient 1: c.5411-5414 del TTTC, L1741fsX1758 and c.7975 C > T, R2596X; Patient 3: c.4863G > A, R1563H and c.5392-5393delAA, E1739fsX1756). There was no mutation identified in the LYST gene for patient 2. CD107α expression of NK cells and CTL in the suspected FHL patients and in mirror of these findings, no underlying gene variation of PRF, MUNC13-4 and STX11 were identified.</p><p><b>CONCLUSION</b>We developed a method to quantitatively assess cytotoxicity of the NK cells and CTL by measuring the expression of CD107α on the cell membrane, which appeared to be an effective and rapid screening test for cytotoxic defects-related diseases such as FHL and other HLH secondary to primary immunodeficiency.</p>

Síndrome Beguez-Chediak-Higashi. Comunicación de un nuevo caso en Cuba / Beguez Chediak-Higashi Syndrome. Report of a new case in Cuba

El síndrome de Beguez-Chediak-Higashi es una enfermedad rara, autosómica recesiva, descrita en Cuba por el Dr. Beguez-César en 1943. Se presenta un paciente masculino de 8 meses de edad con antecedentes de infecciones graves, obesidad, palidez cutáneo-mucosa intensa, cabello de color plateado, hepatoesplenomegalia y anemia con presencia de gránulos lisosomales gigantes en las células del sistema granulopoyético. Se trató con prednisona, vincristina, etopósido y aciclovir oral con respuestas parciales y transitorias

Beguez-Chediak-Higashi syndrome is a rare illness; it was described in 1943 by Dr. Beguez-Cesar in Cuba. We present an 8 months boy with frequent infections, obesity, intense paleness, silver hair, hepatomegaly, splenomegaly, anemia and big lisosomal granules in myelopoietic system. He was treated with prednisolona, vincristin, VP-16, and oral acyclovir with partial and transitory results

Clinico-hematological profile of Chediak-Higashi syndrome: Experience from a tertiary care center in south India.

Introduction: Chediak-Higashi syndrome (CHS) is a rare autosomal recessive disorder characterized by partial ocular and cutaneous albinism, increased susceptibility to pyogenic infections, the presence of large lysosomal-like organelles in most granule-containing cells and a bleeding tendency. The abnormal granules are most readily seen in blood and marrow leukocytes, especially granulocytes; and in melanocytes. Other clinical features include silvery hair, photophobia, horizontal and rotatory nystagmus and hepatosplenomegaly. Materials and Methods: The clinico-hematological profile of a series of 5 cases of CHS encountered at JIPMER Hospital with diagnostic work-up done in the Department of Pathology over the last 6 years is presented. The diagnostic work-up included complete hemogram with peripheral smear, bone marrow examination, skin and liver biopsies. Results: The age of the patients ranged from 5 months to 3 years. All patients had silvery hair and partial albinism and presented with fever and recurrent chest infection. Two patients were stable. Three patients were in accelerated phase; of them, 1 patient with associated hemophagocytic syndrome had a rapidly fulminant course. Peripheral blood smear showed anomalously large granules in the leukocytes. Skin biopsy showed sparse, coarse melanin pigment in the epidermis, and liver biopsy done in 2 patients with accelerated phase showed portal lymphohistiocytic aggregates. Conclusions: The diagnostic hallmark of CHS is the occurrence of giant inclusion bodies (granules) in the peripheral leukocyte and their bone marrow precursors. The case series is being presented because of the rarity of CHS and varied spectrum of clinical and hematological presentation.

Case report: chediak-higashi syndrome

Chediak-Higashi Syndrome is a rare inherited autosomal recessive disorder of immune system. Susceptibility to infection due to phagocyte dysfunction ranges from recurrent skin infection to over whelming fatal systemic infection. A three year old boy presented by dark skin all over the body except tiny areas of hypopigmentation. He suffered from repeated attacks of fever, cough, bloody diarrhea. On examination there was severe pallor, grey silver hair, generalized lymphadenopathy and hepatosplenomegaly. His investigations showed pancytopenia and giant lysosomal granules in the cytoplasm of neutrophils and lymphocytes. He received antibiotics for several times but in last episode he looked terminally ill and his parents refused medical advice for admission and took him to home