galactomannan and Sinusitis

The serum galactomannan test has been used for diagnosing acute invasive fungal sinusitis (AIFS), especially invasive Aspergillus. We aimed to assess the accuracy of the test to diagnose acute invasive Aspergillus sinusitis (AIAS).. We searched all relevant articles published in PubMed, Embase, the Cochrane Library, and Web of Science databases up until September 14, 2020. The available data for serum galactomannan test to diagnose AIAS from selected studies were assessed. The diagnostic odds ratio (DOR), summary receiver operating characteristics (SROC), sensitivity, specificity, positive likelihood ratio (PLR), and negative likelihood ratio (NLR) were estimated. Additionally, we analysed four studies with a cut-off value of 0.5.. Five eligible articles were selected in this study. The total number of enrolled patients was 118, and 62 patients had confirmed AIAS. Among these 62 patients, the summary estimates of the serum galactomannan assay were as follows: DOR, 3.37 (95% confidence interval [CI]: 1.47-6.66); sensitivity, 0.63 (95% CI 0.50-0.74); specificity, 0.65 (95% CI 0.51-0.76); PLR, 1.83 (95% CI 1.21-2.74); NLR, 0.58 (95% CI 0.39-0.83). The SROC was 0.68.. In this current meta-analysis, the serum galactomannan test was classified as less accurate for purposes of diagnosing confirmed AIAS. These results suggest that the initial diagnosis of AIAS should not solely be dependent upon serum galactomannan test results. More studies of the test are needed in patients with AIAS to more accurately assess its diagnostic value.

Topics: Aspergillus; Galactose; Humans; Mannans; Sensitivity and Specificity; Sinusitis

In this case, the authors report Chaetomium globosum as a cause of invasive pulmonary infection in a patient with Wegener's granulomatosis. Fungal hyphae (KOH and Calcofluor) were seen on direct microscopy of lung biopsy sample and bronchoalveolar lavage (BAL) sample. C. globosum isolated on culture clinched the diagnosis of invasive pulmonary infection by Chaetomium spp. A positive galactomannan of serum and BAL was repeatedly seen and was utilised for follow-up and as prognostic marker in patient management. The patient was successfully treated with liposomal amphotericin B followed by voriconazole. All the Chaetomium infections reported till date since 1980 are reviewed. Chaetomium spp. with its unique ecology has a hidden clinical potential to cause invasive mould infections.

Topics: Bronchoalveolar Lavage Fluid; Chaetomium; False Positive Reactions; Female; Galactose; Granulomatosis with Polyangiitis; Humans; Lung; Lung Diseases, Fungal; Mannans; Middle Aged; Paranasal Sinuses; Sinusitis

Serum galactomannan detection is considered to be a useful test for early diagnosis and follow-up of invasive aspergillosis. From February to September 2002, adult patients hospitalized in our Hematology Unit for receiving intensive chemotherapy and/or hematopoietic stem cell transplant were prospectively studied. We analyzed a total of 760 samples obtained from 100 patients. Eleven patients (11%) having a positive result (OD index >1.5 ng/ml) in two consecutive Platelia Aspergillus tests were considered galactomannan-positive cases. On the other hand, 12 patients (12%) were diagnosed of proven or probable invasive aspergillosis. Sensitivity (66.6%), specificity (95.5%), positive predictive value (72.7%) and negative predictive value (96.7%) were comparable to those of larger series. Galactomannan positivity allowed also to anticipate invasive aspergillosis diagnosis (from two to 17 days before radiographic findings and from two to 15 days before mycological culture). Moreover, kinetics of antigenemia could be useful for assessing therapeutic response. Once accepted galactomannan test as a diagnostic criterium for invasive aspergillosis knowing potential causes of false positive results is of paramount importance.

Topics: Adult; Aged; Antigens, Fungal; Antineoplastic Combined Chemotherapy Protocols; Aspergillosis; Aspergillosis, Allergic Bronchopulmonary; Aspergillus; Biomarkers; Combined Modality Therapy; Enzyme-Linked Immunosorbent Assay; Female; Follow-Up Studies; Fungemia; Galactose; Hematologic Neoplasms; Hematopoietic Stem Cell Transplantation; Humans; Immunocompromised Host; Male; Mannans; Middle Aged; Neutropenia; Prospective Studies; Sinusitis

Pathologic diagnosis remains the gold standard for final diagnosis of acute invasive fungal sinusitis (AIFS); however, other less invasive tests could suggest the presence of AIFS in at-risk populations where early diagnosis is crucial. Serum galactomannan Aspergillus antigen has been shown to correlate with a diagnosis of invasive pulmonary aspergillosis; however, it has not adequately been evaluated in regard to AIFS. The objective of this study is to evaluate the statistical relevance of galactomannan in predicting diagnosis of AIFS.. This study was a retrospective review of pathologic records using Co-Path from 2006 to 2017, incorporating 2 separate searches with designated criteria identifying patients who received pathologic evaluation for invasive fungal sinusitis. Electronic medical records were subsequently reviewed. After exclusions isolating at-risk populations and removing duplications, 78 cases were reviewed using the indicated search criteria. Of these, 38 met further criteria of having had both pathologic evaluation and galactomannan analysis. Statistical variables were assessed, as well as all-cause mortality. Peak and closest galactomannan levels were evaluated.. Overall, galactomannan had a sensitivity of 44.8% (95% confidence interval [CI], 26.5% to 64.3%), specificity of 100% (95% CI, 66.4% to 100%), positive predictive value of 100% (95% CI, 74.3% to 100%), and negative predictive value of 36% (95% CI, 18.0% to 57.5%). No significant association was observed in galactomannan status and mortality in this patient population.. Positive serum galactomannan can be an indication of AIFS in patients with a high clinical suspicion. In our study, a positive galactomannan always correlated with a positive pathologic diagnosis. However, given its low sensitivity, one must use caution in relying on galactomannan as a screening tool in diagnosis of AIFS.

Topics: Adult; Aged; Aged, 80 and over; Antigens, Fungal; Aspergillosis; Aspergillus; Female; Galactose; Humans; Invasive Fungal Infections; Male; Mannans; Middle Aged; Predictive Value of Tests; Retrospective Studies; Sensitivity and Specificity; Sinusitis; Survival Analysis; Young Adult

Acute invasive fungal rhinosinusitis (AIFR) is an aggressive opportunistic infection with a high mortality rate. Recently, non-invasive techniques have been introduced for diagnosis of invasive fungal disease. The purpose of this study is to evaluate the diagnostic significance of serum galactomannan measurement in patients with AIFR.. We conducted a retrospective case-control study of 28 patients with AIFR and 36 fungus ball (FB) patients. We evaluated clinical, laboratory, and pathologic findings along with disease course.. In 28 patients with AIFR, there were 21 cases of invasive aspergillosis (IA) and 7 cases of invasive mucormycosis (IM). The control group was comprised of 36 patients with FB. The three-group analysis showed a statistically significant difference among the groups. At the cut-off value of 0.48, the sensitivity and specificity were 71.4% and 93.0%, respectively. Comparison of mean serum galactomannan levels in 5 non-survivors and 9 survivors at initial measurement showed no significant difference, but that became significantly different 1 week later. Statistical analysis showed that the levels of serum galactomannan decreased significantly according to the measurement-point in within survivor-group analysis. The difference in between survivor-groups analysis was also significant.. Serum galactomannan measurement seems useful for early diagnosis and discrimination of fungal species in patients with AIFR. In addition, clinical outcomes may be related to the levels and patterns of serum galactomannan, especially in IA. The appropriate measurement of galactomannan might be helpful in treating the patients at high risk for AIFR.

Topics: Adolescent; Adult; Aged; Aged, 80 and over; Aspergillosis; Case-Control Studies; Child; Female; Galactose; Humans; Invasive Fungal Infections; Male; Mannans; Middle Aged; Mucormycosis; Retrospective Studies; Rhinitis; Sensitivity and Specificity; Sinusitis; Young Adult

Invasive aspergillosis is a life-threatening infectious complication in hematological patients undergoing immunosuppressive chemotherapy.. We report 29 cases of invasive aspergillosis diagnosed in the Sousse Farhat Hached hospital Hematology unit, Tunisia, between 2002 and 2010.. The most frequent disease (65.5%) was acute myeloid leukemia. All patients were severely neutropenic (<500/mm(3), mean duration=27 days). Pulmonary invasive aspergillosis was suggested in 28 (96.5%) cases. The most frequent respiratory signs were cough (64.3%), chest pain (53.6%), and hemoptysis (50%). The chest X-ray showed suggestive lesions in 60.7% of cases. CT scans revealed nodules with cavitation in 65% of cases, a halo sign in 20% of cases, and nodules in 15% of cases. Galactomannan antigenemia was positive in 88%, mycological examination positive in 51.6%, and seroconversion was noted in 35.7% of the cases. Invasive pulmonary aspergillosis was classified, according to EORTC/MSG criteria, as probable in 26 cases, possible in one case, and proven in one case. Aspergillus flavus was the dominant species in pulmonary invasive aspergillosis accounting for 73.7% of isolates. Extrapulmonary involvement was suggested in 39.3% of cases, the most frequent were sinusitis and brain abscess. Primary cutaneous aspergillosis was observed in one case. The overall mortality rate was 64.2%; the 12-week survival rate was 71.4%.. Our results are correlated to published data. A. flavus was the most frequent species in our region.

Topics: Adolescent; Adult; Aged; Antigens, Fungal; Antineoplastic Combined Chemotherapy Protocols; Aspergillosis; Aspergillus; Brain Abscess; Child; Child, Preschool; Dermatomycoses; Enzyme-Linked Immunosorbent Assay; Female; Fungemia; Galactose; Hematologic Neoplasms; Humans; Induction Chemotherapy; Invasive Pulmonary Aspergillosis; Male; Mannans; Middle Aged; Neuroaspergillosis; Neutropenia; Sinusitis; Survival Rate; Tomography, X-Ray Computed; Tunisia; Young Adult

Serology is currently used for the diagnosis of canine sino-nasal aspergillosis (SNA). However, the accuracy of serological testing using commercially available, standardized purified antigen preparations of Aspergillus (CAPurAspAg) has only been poorly documented. The aim of the present study was to assess the diagnostic value of an agar-gel double immunodiffusion (AGDD) test and an anti-Aspergillus IgG ELISA, using CAPurAspAg and the commercially available Platelia test for the detection of serum galactomannan. Sera from 17 dogs with SNA, 18 dogs with a nasal tumour (NT), 11 dogs with lymphoplasmacytic rhinitis (LPR) and 33 control dogs were tested with the 3 methods. AGDD result was positive in 76.5% of dogs with SNA, whereas all sera from dogs with non-fungal nasal disease and control dogs were negative. A positive IgG ELISA result was obtained in 88% of dogs with SNA and in 18% of dogs with LPR. All patients with NT and control dogs had a negative IgG ELISA result. The Platelia test was positive in 24% of dogs with SNA, 11% of dogs with NT, 9% of dogs with LPR and 24% of control dogs. The results of this study suggest that (1) the detection of serum Aspergillus-specific antibodies with AGDD or ELISA, using CAPurAspAg, provides excellent specificity and good sensitivity, (2) the specificity is higher for AGDD (100%) than for ELISA (96.8%) while sensitivity is higher for ELISA (88.2%) than for AGDD (76.5%) and (3) serum galactomannan quantification with the Plateliat test is unreliable for the diagnosis of canine SNA.

Topics: Animals; Antibodies, Fungal; Aspergillosis; Aspergillus; Dog Diseases; Dogs; Enzyme-Linked Immunosorbent Assay; Female; Galactose; Immunoglobulin G; Male; Mannans; Nose Diseases; Sinusitis

A proportion of patients with chronic rhinosinusitis, especially if nasal polyps are present, have a diagnosis of fungal rhinosinusitis. The diagnosis is difficult to establish because the symptoms and clinical and radiological signs are non-specific. Also current diagnostic methods, i.e. histology, fungal staining and culture, are insensitive. The performance of the Aspergillus galactomannan (GM) ELISA and real-time PCR for Aspergillus fumigatus mitochondrial DNA was evaluated for the detection of Aspergillus in sinus mucus samples from 25 patients with chronic rhinosinusitis with nasal polyposis. The results were compared with those from nasal lavage fluid from 19 healthy volunteers. Seven patients (28 %) were diagnosed as having fungal rhinosinusitis according to the presence of filaments in histology or direct microscopy using Calcofluor white. All fungal rhinosinusitis patients were negative in the GM ELISA. GM ELISA was positive in five patients whose samples were negative using conventional methods and A. fumigatus PCR. Two out of seven patients with fungal rhinosinusitis were positive by A. fumigatus PCR: one also had a positive A. fumigatus culture, and one had hyphae consistent with Aspergillus in histology. One additional patient had a weak positive PCR result, but other fungal tests were negative. In control subjects, the GM ELISA was positive in 21 %, whereas direct microscopy, culture and A. fumigatus PCR were negative in all samples. Direct microscopy and culture together with histology remain pivotal in defining fungal rhinosinusitis diagnosis. A. fumigatus PCR may have additional value in allowing the diagnosis to be made sooner, whereas the GM ELISA is not reliable in diagnosing Aspergillus infection of the paranasal sinuses.

Topics: Adult; Aged; Aspergillus fumigatus; DNA, Fungal; DNA, Mitochondrial; Enzyme-Linked Immunosorbent Assay; Female; Galactose; Histocytochemistry; Humans; Male; Mannans; Middle Aged; Mucus; Nasal Lavage Fluid; Polymerase Chain Reaction; Rhinitis; Sinusitis

Topics: Adult; Aged; Aspergillosis; Aspergillus; Culture Media; Enzyme-Linked Immunosorbent Assay; Female; Galactose; Humans; Latex Fixation Tests; Male; Mannans; Middle Aged; Rhinitis; Sinusitis