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Query: UMLS:C0040425 (tonsillitis)
 1,594 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A prospective 1-year study of acute febrile exudative tonsillitis in 110 children was carried out. Viral infection was associated with 42% of the cases, beta-hemolytic streptococci with 31% (12% group A), Mycoplasma pneumoniae with 5%, and unknown cause with 35%. More than one agent was implicated in 14% of the cases. Adenovirus was the viral agent most frequently (19%) recorded. Other viruses involved were Epstein-Barr virus, parainfluenza, influenza A, herpes simplex, and respiratory syncytial viruses. The responsible agent was found by rapid viral antigen detection in 20% of all cases and by rapid test for group A streptococcal antigen detection in 10%. Age was the most important factor in predicting the causative agent. Viral tonsillitis was most common in children younger than 3 years of age and group A beta-hemolytic streptococci tonsillitis in children 6 years of age or more. Clinical analysis of the illness, WBC count, and ESR did not reveal differences that could help in differentiating bacterial from viral tonsillitis. All patients were treated with a regimen of oral penicillin. Fever associated with group A beta-hemolytic streptococci tonsillitis responded to penicillin therapy significantly more rapidly than fever associated with viral infections. These observations demonstrate the prominent role of viruses in the etiology of febrile exudative tonsillitis, especially in young children, and reinforce the benefit of rapid tests before antibiotic therapy is started.
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PMID:Febrile exudative tonsillitis: viral or streptococcal? 360 20

To elucidate mechanisms responsible for susceptibility of the palatine tonsil to infections in patients with recurrent tonsillitis, we studied 46 patients with recurrent tonsillitis (RT), simple hypertrophic tonsil (SHT) or focal tonsillitis (FT) in regard to the participation of viral infections, especially Epstein-Barr virus (EBV) infection by using ELISA and immunostaining methods. Culture supernatants of tonsillar lymphocytes in RT group had antibodies to respiratory syncytial (RS) virus at greater positive rate (26.3%) than that of SHT group (16.7%). About 70% of patients with RT had serum antibodies to viral capsid antigen (VCA) of EBV in high titre over 160X, but only 30% in SHT group. Furthermore, in RT group 2 patients possessed IgM antibody to VCA and IgG antibody to early antigen (EA). In RT group, IgG, IgM and IgA antibodies to VCA and IgG antibody to EA presented in the supernatant in 58%, 17.6%, 11.7% and 17.6% respectively. In the 35 tonsillar lymphocyte suspensions tested 20% contained EBNA-positive lymphocytes. In RT group, 5 of 21 patients (23.8%) had EBNA-positive lymphocytes, but only one of 9 (14.3%) in SHT group. These results suggest that EBV infection and its reactivation in the palatine tonsil may be one of major mechanisms in recurrent episodes of tonsillitis.
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PMID:Viral infections associated with recurrent tonsillitis. 609 55

Sera from 48 tonsillar carcinoma (TC) patients, 48 matched controls and 16 recurrent exudative tonsillitis (RET) patients were examined for the presence of Epstein-Barr virus (EBV) associated nuclear antigen (EBNA), early antigen (EA) and virus capsid antigen (VCA). Higher prevalence and significantly higher antibody titres against all three EBV-associated antigens were observed in TC patients in comparison with controls and RET patients. Patients suffering from anaplastic TC had higher titres of antibodies against VCA and EA than TC patients with other histological diagnoses. Five out of 11 TC biopsies obtained from 9 patients were positive for EBV DNA at levels of 0.17, 4 to 5, 15 to 18 and in two cases 3 EBV genome equivalents per cellular genome. Among 16 RET patients, 4 were found positive at levels not exceeding 2.17 EBV genome equivalents per cellular genome. Higher titres of antibody against all EBV antigens were found in TC and RET patients with EBV DNA-positive tonsillar tissue than in those with EBV DNA-negative tonsillar tissue.
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PMID:Presence of Epstein-Barr virus DNA in tonsillar tissues. 612 Jun 37

This report is concerned with acute exudative tonsillitis as a pathologic response to the Epstein-Barr virus (EBV). The concept of a bacterial-viral etiology etiology for tonsillitis has been suggested, and previous studies implicate EBV as a major pathogen in exudative tonsillitis. A prospective study of 16 patients with this diagnosis was conducted. EBV serologic data plus viral and bacterial throat cultures were compiled and evaluated. EBV as a casual agent alone or concurrent with other organisms was seen in 56% (9) of the patients under study. EBV activation was associated with infection by other organisms in 19% (3) of the cases. The overall total incidence of EBV in association with severe acute exudative tonsillitis was 75% (12). The data further documents EBV as a significant causal or associative agent in acute exudative tonsillitis.
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PMID:Association of Epstein-Barr virus with acute exudative tonsillitis. 628 56

Adenovirus antigen was detected by radioimmunoassay in the nasopharyngeal specimens of 30 of 74 children with febrile exudative tonsillitis. In the other 44 children, the cause of tonsillitis was identified in 16 (beta-hemolytic streptococci or Epstein-Barr, parainfluenza, or herpes simplex viruses). The clinical picture of adenoviral tonsillitis was difficult to differentiate from that of streptococcal disease; 20 of the patients had originally been given antibiotics. In 68% of patients without complications, the serum concentration of C-reactive protein was less than 20 mg/L, suggesting a viral disease. No other hematologic test was found helpful in identifying the adenoviral tonsillitis. The rapid detection of adenovirus antigen permitted withdrawal of unnecessary and ineffective antibiotic treatment in most patients.
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PMID:Rapid diagnosis of adenoviral tonsillitis: a prospective clinical study. 632 57

Mononucleosis is defined as atypical lymphocyte proliferation which causes clinical symptoms such as tonsillitis, lymphadenopathy, or hepatosplenomegaly. Mononucleosis syndrome is caused by cytomegalovirus (CMV), Toxoplasma, hepatitis virus, adenovirus, or other agents as well as by Epstein-Barr virus. The syndrome is immunologically characterized by the proliferation of activated T cells (HLA-DR+ T cells). We encountered three infants with hepatosplenomegaly who were diagnosed as primary CMV infection by the detection of anti-CMV IgM antibody. Although the patients were otherwise asymptomatic, analysis of lymphocyte subpopulations showed a decreased ratio of CD4+ to CD8+ T cells and augmented expression of HLA-DR antigen on T cells characteristic of infectious mononucleosis. We conclude that inapparent CMV disease may affect the immunologic status of infected children even if it is asymptomatic.
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PMID:Peripheral blood lymphocyte subpopulations in three infants with hepatosplenomegaly caused by cytomegalovirus infection. 764 91

Bone marrow transplantation for the treatment of leukemia is increasingly successful in rendering patients disease free. However, it has become evident that the associated severe immunosuppression predisposes this population to an increased risk for other neoplastic disorders. We report on six patients in whom non-Hodgkin's lymphoma of the tonsillar region developed within 5 months after T-cell-depleted bone marrow transplantation for the treatment of leukemia at Memorial Sloan-Kettering Cancer Center from October 1990 to October 1992. These patients initially had what appeared to be infectious exudative pharyngitis/tonsillitis; however, they did not improve with medical therapy. Because of the persistence of pharyngitis/tonsillitis in association with cervical lymphadenopathy and odynophagia, the patients underwent definitive biopsy in the form of tonsillectomy, cervical lymph node biopsy, or both. Histopathologic review revealed non-Hodgkin's lymphoma. An association with Epstein-Barr virus has been noted in five of these patients. This article is aimed at alerting the clinician to consider the diagnosis of lymphoma in a patient with persistent pharyngitis/tonsillitis despite adequate medical therapy after bone marrow transplantation.
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PMID:Tonsil lymphoma presenting as tonsillitis after bone marrow transplantation. 770 Jun 60

A two year old boy exhibited not only clinical manifestations which suggested a recurrence of Kawasaki disease (KD) but also evidence of a primary infection by Epstein-Barr virus (EBV) including tonsillitis, splenomegaly and atypical lymphocytosis in the peripheral blood. An inverted CD4/CD8 ratio in lymphocyte subsets suggested the presence of infectious mononucleosis (IM). Epstein-Barr virus titers (viral capsid antigen-immunoglobulin G 1:20; Epstein-Barr virus-associated nuclear antigen < 1:10) showed an acute EBV infection and the presence of EBV genome in the blood was determined by the polymerase chain reaction technique. In Japan, the peak incidence of KD and IM is in children under 4 years of age. From the investigation of EBV titers, it has been reported that some patients with KD develop an associated, unusual primary EBV infection. Kawasaki disease concurrent with a primary EBV infection as in this case, suggests the possibility of an etiologic agent related to the KD rather than to the EBV infection itself.
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PMID:Kawasaki disease with a concomitant primary Epstein-Barr virus infection. 787 90

Acute idiopathic thrombocytopenic purpura (ITP) often appears to be related to the sensitization by some viral infections. However, the causative viral agents are not identified in most cases. Although the primary infection with Epstein-Barr virus (EBV) occurs during early childhood in Japan, the majority of cases are usually asymptomatic. A minority are associated with acute infectious mononucleosis (IM), which is characterized by fever, tonsillitis, lymphadenopathy, splenomegaly and liver dysfunction. In this report, three cases are described of children with EBV-induced ITP who clinically had atypical findings of IM. Their primary EBV infections were confirmed by serological test and, in addition, were verified by the enhanced expression of activation antigens (HLA-DR and CD45RO) on T cells as well as the inverted ratio of CD4+ to CD8+ subsets. These observations imply that ITP can occur as one of the host responses during primary EBV infections, irrespective of clinical manifestations. Evaluation of lymphocyte subpopulations may be useful for the assessment of primary EBV infection in ITP.
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PMID:Acute thrombocytopenic purpura associated with primary Epstein-Barr virus infection. 794 9

Sequential bacterial samples were obtained from the tonsillar surface of 19 consecutive patients (12 females, seven males; mean age 16.1 years, range four to 24 years) suffering from infectious mononucleosis with membranous tonsillitis. The specimens were examined with respect to aerobes (culture on blood and chocolate agar plates) and proportions of bacteria coated with immunoglobulins (secretory IgA, IgG, IgM) by using an immunofluorescence assay. In the early stage of the membranous tonsillitis phase, attachment of secretory IgA (SIgA) and IgG to the bacteria was greatly suppressed, as compared with healthy controls. Coating with IgM was evident only late in the membranous tonsillitis phase but was contracted and still evident even after the clinical throat symptoms had abated. The findings suggest that the B-lymphotropic Epstein-Barr virus, causative agent of infectious mononucleosis, exerts a transient suppression of immunoglobulin-coating of bacteria harboured on the tonsillar surfaces, with consequent abundant bacterial attachment to the epithelial cells and massive bacterial colonization on the palatine tonsils.
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PMID:Immunoglobulin-coated bacteria on the tonsillar surface during infectious mononucleosis. 873 54


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