“Typhoidal Cells”Appear in a Woman with Hemophagocytic Syndrome Secondary To Brucellosis:A Case Report

We report a case of hemophagocytic syndrome(HPS)secondary to brucellosis,in which typhoidal cells were found in bone marrow,suggesting typhoidal cells present not only in Salmonella typhi infections but also in other bacterial infections.Typhoidal cells in bone marrow can be used to quickly identify the presence of bacterial infection pending the results of bone marrow and/or blood cultures.

Epstein–Barr virus-associated hemophagocytic syndrome in a patient with ulcerative colitis during treatment with azathioprine: A case report and review of literature

A 19-year-old female was diagnosed with ulcerative colitis when she presented with persistent melena, and has been treated with 5-aminosalicylic acid for 4 years, with additional azathioprine for 2 years at our hospital. The patient experienced high-grade fevers, chills, and cough fve d prior to presenting to the outpatient unit. At frst, the patient was suspected to have developed neutropenic fever; however, she was diagnosed with Epstein-Barr virus-associated hemophagocytic syndr-ome （EB-VAHS） upon fulfilling the diagnostic criteria after bone marrow aspiration. When patients withinflammatory bowel disease treated with immunomo-dulators, such as thiopurine preparations, develop fever, EB-VAHS should be considered in the differential diagnosis.

Diagnostic value of bone marrow cell morphology in visceral leishmaniasis-associated hemophagocytic syndrome:Two case reports

BACKGROUND Visceral leishmaniasis related-hemophagocytic lymphohistiocytosis(VL-HLH)is a hemophagocytic syndrome caused by Leishmania infection.VL-HLH is rare,especially in nonendemic areas where the disease is severe,and mortality rates are high.The key to diagnosing VL-HLH is to find the pathogen;therefore,the Leishmania must be accurately identified for timely clinical treatment.CASE SUMMARY We retrospectively analyzed the clinical data,laboratory examination results,and bone marrow cell morphology of two children with VL-HLH diagnosed via bone marrow cell morphology at Kunming Children’s Hospital of Yunnan,China.Both cases suspected of having malignant tumors at other hospitals and who were unresponsive to treatment were transferred to Kunming Children’s Hospital.They are Han Chinese girls,one was 2 years old and the other one is 9 mo old.They had repeated fevers,pancytopenia,hepatosplenomegaly,hypertriglyceridemia,and hypofibrinogenemia over a long period and met the HLH-2004 criteria.Their HLH genetic test results were negative.Both children underwent chemotherapy as per the HLH-2004 chemotherapy regimen,but it was ineffective and accompanied by serious infections.We found Leishmania amastigotes in their bone marrow via morphological examination of their bone marrow cells,which showed hemophagocytic cells;thus,the children were diagnosed with VL-HLH.After being transferred to a specialty hospital for treatment,the condition was well-controlled.CONCLUSION Morphological examination of bone marrow cells plays an important role in diagnosing VL-HLH.When clinically diagnosing secondary HLH,VL-HLH should be considered in addition to common pathogens,especially in patients for whom HLH-2004 chemotherapy regimens are ineffective.For infants and young children,bone marrow cytology examinations should be performed several times and as early as possible to find the pathogens to reduce potential misdiagnoses.

Infection-associated Hemophagocytic Syndrome in Critically Ill Patients with COVID-19

Infection-associated hemophagocytic syndrome(IAHS),a severe complication of various infections,is potentially fatal.This study aims to determine whether IAHS occurs in critically ill patients with coronavirus disease 2019(COVID-19).We conducted a retrospective observational study on 268 critically ill patients with COVID-19 between February 1st,2020 and February 26th,2020.Demographics,clinical characteristics,laboratory results,information on concurrent treatments and outcomes were collected.A diagnosis of secondary hemophagocytic lymphohistiocytosis(sHLH)was made when the patients had an HScore greater than 169.Histopathological examinations were performed to confirm the presence of hemophagocytosis.Of 268 critically ill patients with confirmed SARS-CoV-2 infection,17(6.3%)patients had an HScore greater than 169.All the 17 patients with sHLH died.The interval from the onset of symptom of COVID-19 to the time of a diagnosis of sHLH made was 19 days and the interval from the diagnosis of sHLH to death was 4 days.Ten(59%)patients were infected with only SARS-CoV-2.Hemophagocytosis in the spleen and the liver,as well as lymphocyte infiltration in the liver on histopathological examinations,was found in 3 sHLH autopsy patients.Mortality in sHLH patients with COVID-19 is high.And SARS-CoV-2 is a potential trigger for sHLH.Prompt recognition of IAHS in critically ill patients with COVID-19 could be beneficial for improving clinical outcomes.

Clinical and Biological Significance of Clonal Macrophage Detection in Hemophagocytic Syndrome

Summary: By using the method of clonal analysis the evidence to prove that Hemophagocytic syndrome (HPS) is reactive or malignant was investigated to probe into the pathogenesis of HPS and its relations with clinical prognosis. The macrophages abnormally proliferated in bone marrow were isolated. Electrophoresis analysis was made after DNA extraction, enzyme restriction of human ardrogen receptor (HUMARA) genetic locus, and PCR amplification. In the 9 specimens, clonal proliferation was found in 2 cases and nonclonal proliferation in 7. Among the 7 cases of nonclonal proliferation, 3 were voluntarily discharged without clinical outcome, 2 cases fully recovered after 2-3 week treatment of large dose gamma globulin intravenous drip and hormone therapy, 1 case died at the 43th day after the hormone and anti-infection therapy, and one case was found to have granular leukoblast in peripheral blood after 3 weeks and diagnosed as having M2a after bone puncture. For the two patients with clonal proliferation, one obtained remission after chemotherapy and the other was died after 32 days without chemotherapy. It was concluded that there do exist clonal or malignant proliferation in HPS, so not every case is reactive.

Unexpected Occurrence of Fetal Hemophagocytic Syndrome in a Patient with Hereditary Diffuse Leukoencephalopathy with Spheroids

Colony stimulating factor-1 receptor (CSF1R) plays important roles in the differentiation and proliferation of macrophage and microglia in systemic organs and the brain. A genetic defect in CSF1R causes hereditary diffuse leukoencephalopathy with spheroids (HDLS). HDLS mainly affects the cerebral white matter and shows pre-senile cognitive decline, motor disturbance, and epilepsy. However, systemic manifestations outside the brain have not yet been described in patients with HDLS. Here, we report the case of a 41-year-old man with HDLS carrying the p. K793T mutation in CSF1R, who unexpectedly died of sepsis and hemophagocytic syndrome shortly after the onset of HDLS. The fetal sequence of sepsis and hemophagocytic syndrome was triggered by enterocolitis. An autopsy revealed that focal inflammation in the intestine had almost resolved. Most strikingly, massive infiltration of cluster of differentiation (CD) 68- and CD163-immunopositive macrophages with hemophagocytosis was observed in the bone marrow, spleen, and liver. Less abundant infiltration of CD68- and CD204-immunopositive macrophages without hemophagocytosis was also seen in the lung and intestine. At present, the pathogenetic link between CSF1R mutation and hemophagocytic syndrome in this patient is unclear. Our case, however, clearly shows that even in patients with HDLS, aberrant activation of functional macrophages can be induced under certain conditions in visceral organs.

Sepsis complicated with secondary hemophagocytic syndrome induced by giant gouty tophi rupture: A case report

BACKGROUND Gouty tophi are a chronic granulomatous caused by a deposition of monosodium urate crystal deposition in the body.Once broken,it may easily induce severe infection.Sepsis complicated with secondary hemophagocytic syndrome induced by gouty tophi rupture is extremely rare in the clinical setting,and no such serious complications have been reported in literature.CASE SUMMARY This is a 52-year-old Chinese male patient with a 20-year history of gouty arthritis.At admission,the gout stone in the patient’s right ankle was broken and it secreted a white mucoid substance.During the course of treatment,the patient suffered from systemic inflammatory response syndrome multiple times.His condition gradually deteriorated,further complicated by hemophagocytic syndrome.After thorough removal of gout lesions and active anti-infection treatment and control of blood uric acid level,combined with multidisciplinary cooperation,the patient was finally cured.CONCLUSION Sepsis complicated with secondary hemophagocytic syndrome induced by gouty tophi rupture is extremely rare in the clinical setting.Timely and accurate diagnosis is very important to save patients'lives.

Guillain-Barrésyndrome and hemophagocytic syndrome heralding the diagnosis of diffuse large B cell lymphoma:A case report

BACKGROUND Central nervous system(CNS)lesions and peripheral neuropathy are rare among patients with non-Hodgkin’s lymphoma(NHL).Lymphomatous infiltration or local oppression usually accounts for CNS or peripheral nerve lesions.The incidence of peripheral neuropathy was 5%.Guillain-Barrésyndrome(GBS)is rare and may occur in less than 0.3%of patients with NHL.Hemophagocytic syndrome(HPS)is a rare complication of NHL.It has been reported that 1%of patients with hematological malignancies develop HPS.Diffuse large B-cell lymphoma(DLBCL)combined with GBS has been reported in 10 cases.CASE SUMMARY We report the case of a 53-year-old man who was initially hospitalized because of abnormal feelings in the lower limbs and urinary incontinence.He was finally diagnosed with DLBCL combined with GBS and HPS after 16 d,which was earlier than previously reported.Immunoglobulin pulse therapy,dexamethasone,and etoposide were immediately administered.The neurological symptoms did not improve,but cytopenia was relieved.However,GBS-related clinical symptoms were relieved partially after one cycle of rituximab-cyclophosphamide,hydroxydaunorubicin,vincristine,and prednisone(R-CHOP)chemotherapy and disappeared after six cycles of R-CHOP.CONCLUSION GBS and HPS heralding the diagnosis of Epstein-Barr virus DLBCL are rare.Herein,we report a rare case of DLBCL combined with GBS and HPS,and share our clinical experience.Traditional therapies may be effective if GBS occurs before lymphoma is diagnosed.Rapid diagnosis and treatment of DLBCL are crucial.

CLINICAL STUDY ON 15 CASES OF HEMOPHAGOCYTIC SYNDROME

cases of hemophagocytic syndrome (HS) have been investigated in recent 5 years. we found that the underlying causes of HS existed broadly including virus infections (hepatitis virus,cytomegalovirus, influenza),bacteria infections(tubercle bacillus, pneumococcus,bacillus pyocyaneus,etc.),fungus infection and tumors (multiple myeloma,lymphomas).The major manifestations were as follows: fever, fatigue, lymphadenovarix,hematosplenomegaly,pancytopenia in peripheral blood, histocyte hyperlasia and histocytosis in bone marrow.7 HS cases with nonfatal infection and tumors recovered. In order to improve the correct diagnosis level and decrease mortality of HS, we discussed the possible mechanism of the onset of HS and its underlying causes.

Toxoplasmosis-Associated Secondary Hemophagocytic Syndrome: A Case Report and Literature Review

Background: Toxoplasmosis is an extremely rare disease that occurs in the hosts contact with cat and dog frequently. Most human acute infections go unnoticed in immunocompetent individuals, and gradually transformed into chronic infection. However, while host immunity significantly waned, the risk of reactivation of chronic toxoplasma infection is greatly increased. Reactivation of latent toxoplasmic infection often presents with fever, leukopenia, thrombocytopenia, neurological signs and pneumonia. However, for the non-specific clinical and biological signs and its fetal outcome, toxoplasmosis is often misdiagnosed and only revealed at autopsy. Case Presenation: We report a case hospitalized for a week history of cough, anorexia and fatigue with nasal bleeding for a day. After hospitalization, broad-spectrum antibiotherapy was started without a clear diagnosis of infection. Then the patient did a lot of investigations to search the cause of infection, but there were no positive findings. However, an unexpected discovery was detected from peripheral blood smears, shows 1 - 3 μm in diameter, scattered, short and bow like microorganisms on Day 39 of hospitalization. Combined with the medical history and clinical manifestation, toxoplasmosis was diagnosed finally. Unfortunately, secondary hemophagocytic syndrome (HPS) was diagnosed only two days after targeted anti-infection therapy, and the patient died on Day 45 of hospitalization. Conclusions: Patient with unexplained long-term fever and neurological symptoms, interstitial pneumonitis or myocarditis, toxoplasmosis should be positively considered. Only early diagnosis and treatment can increase the possibility of a successful cure and avoid other secondary diseases.

Kikuchi-Fujimoto Disease with Hemophagocytic Syndrome and Pleural Effusion in an Elder Man: A Case Report and Literature Review

Background: Kikuchi-Fujimoto disease (KFD), also named Histiocytic necrotizing lymphadenitis (HNL), is a rare and self-limited necrotizing lymphadenitis, most commonly affects young Asian female. KFD is characterized by lymphadenopathy, cytopenia, fever, rashes, and weight loss, however, hemophagocytic syndrome and pleural effusion are rarely reported. Case Presentation: We present the case of a 61-year-old man with clinical features including fever, lymphadenopathy, purpura, arthralgia, pleural effusion and pulmonary infection. He had cervical lymphnodebiopsy and the pathology is consistent with KFD, laboratory tests and clinical manifestations were consistent with hemophagocytic syndrome (HLH). After initial treatment including corticosteroid and anti-infection drugs, the patient showed improvement but soon deteriorated. Conclusion: KFD is a self-limited disease with spontaneous resolution. However, the cases of KFD with HLH may have a fatal course. Early appropriate intensive immunosuppressive therapy and strong anti-infection therapy could be beneficial for the treatment outcome.

One Hemophagocytic Syndrome Relating to Adult Epstein-Barr Virus Infection and a Literature Review

Background: Adult hemophagocytic syndrome is a critical condition that is often difficult to diagnose and results in a bad prognosis because of the lack of effective and unified treatment. Aim: To investigate the clinical, diagnosis and treatment of hemophagocytic syndrome. Case Presentation: A 22-year-old female patient received a splenectomy, and the spleen was sent to the King Med Center of Medical Inspection. The results confirmed the diagnosis of hemophagocytic syndrome related to EB (Epstein-Barr) virus infection. Conclusion: Early diagnosis and early intervention are important factors for affecting the progression of the disease and improving its prognosis.

Acute Kidney Injury with Epstein Barr Virus-Associated Hemophagocytic Syndrome

A 59-year-old man, who was treated for schizophrenia and psoriasis vulgaris with risperidone and cyclosporine, presented with high fever and myalgia. Those did not respond to treatment for neuroleptic malignant syndrome for two weeks, and multiple organ dysfunction developed, so he was admitted to our hospital, but died two days later. Autopsy detected the hemophagocytosis, Epstein Barr Virus (EBV)-reactivated cells, and the absence of glomerulonephritis and interstitial tubulitis. We considered that hemophagocytic syndrome (HPS) and myalgia were caused by reactivated EBV and the viremia under immunosuppression, and renal failure was caused by sepsis-like state by cytokine storm of HPS.

Hemophagocytic syndrome： a rare but fatal complication after liver transplantation

Hemophagocytic syndrome （HPS） is recognized as a disorder characterized by a variety of symptomsincluding fever, jaundice, skin rash, lymphadenopathy, and hepatosplenomegaly related to uncontrolled systemic T-cell activation. Two forms of HPS have been characterized： primary/familial hemophagocytic lymphohistiocytosis and secondary/reactive HPS. Reactive HPS was first described in 1979 by Risdall et al.2 Although most patients with HPS are immunocompromised, only a small number of patients with HPS have been reported following liver transplantation （LT）, suggesting a low level of awareness for this hematological disorder after transplantation. We herein report one patient who underwent LT and in whom HPS subsequently developed. The patient had an aggressive clinical course and fatal outcome. The observation of one case of HPS in a cohort of 741 patients who underwent LT in our center raised the possibility that the case of HPS in these immunocompromised patients might be increasing in the future. Because of this,

Successful treatment of adult-onset still disease caused by pulmonary infection-associated hemophagocytic lymphohistiocytosis: A case report

BACKGROUND Adult-onset still disease(AOSD) and hemophagocytic syndrome(HPS) are two inflammatory diseases with very similar clinical manifestations. HPS is one of the most serious complications of AOSD and its risk of death is very high. It is difficult to identify HPS early in patients with AOSD, but early identification and proper treatment directly affects the prognosis.CASE SUMMARY A 39-year-old male showed a high spiking fever and myalgia. Laboratory data revealed elevated white blood cell, serum ferritin, and neutrophil percentage.However, his fever failed to relieve after a clear diagnosis of AOSD caused by pulmonary infection and treatment by antibiotics and corticosteroids;further laboratory data showed elevated serum ferritin, C-reactive protein, erythrocyte sedimentation rate and triglyceride, as well as liver abnormalities. Bone marrow smear showed hemophagocytosis. Secondary HPS was definitely diagnosed. The high fever disappeared and the laboratory findings returned to normal values after treatment by high-dose intravenous methylprednisolone and methotrexate.CONCLUSION For AOSD patients with high suspicion of HPS, active examination needs to be considered for early diagnosis, and timely using of adequate amount of corticosteroids is the key to reducing risk of HPS death.

Life threatening rickettsiosis and the role of hemophagocytic lymphohistiocytosis syndrome(HLH):Case report of a 21-year-old woman

Hemophagocytic lymphohistiocytosis(HLH)syndrome is an uncontrolled activation of macrophages,causing multiorgan dysfunction.The prognosis depends on the cause and the delay of diagnosis and treatment.Several infections can cause HLH,including rickettsia,a gram-negative bacterium.The diagnosis of rickettsia is based on clinical signs,including fever,headache,rash and sometimes tick bite site.The importance of an early diagnosis of rickettsia is the key.We present a case of rickettsia infection complicated with severe HLH occurring in a 21-year-old woman.The diagnosis was confirmed by serology 4 weeks after admission.She was treated with immunoglobulin,corticosteroids,and doxycycline with a favorable outcome.