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PubMed1996

Miliary tuberculosis. Diagnostic accuracy of chest radiography.

STUDY OBJECTIVE: To assess the efficacy of the chest radiograph in identifying patients with miliary tuberculosis. DESIGN: Retrospective case-controlled review by three independent blinded chest radiologists. SETTING: Provincial tuberculosis control center. PATIENTS: Population-based sample, including all proved cases of miliary tuberculosis diagnosed in the Province of British Columbia, Canada, between November 1982 and November 1992. One hundred cases of miliary tuberculosis were identified, of which 71 had chest radiographs available for review. Forty-four normal chest radiographs and 20 chest radiographs of patients with localized pulmonary tuberculosis were also included as controls. MAIN OUTCOME MEASURES: The primary outcome of measurements was the sensitivity and interobserver variability of the chest radiograph in the diagnosis of miliary tuberculosis. The observers were also asked to describe the pattern and extent of pulmonary abnormalities based on the International Labor Organization (ILO) classification of pneumoconioses. RESULTS: The three independent observers identified 42, 44, and 49 of the 71 cases of miliary tuberculosis, respectively (sensitivity, 59 to 69%). The three observers incorrectly diagnosed miliary tuberculosis in 2, 0, and 2 of the 64 controls, respectively (specificity, 97 to 100%). There was good interobserver agreement (90%, kappa = 0.77). The nodules measured less than 3 mm in diameter in 90% of cases in which miliary tuberculosis was correctly identified. In 10% of cases, the nodules measured greater than 3 mm in diameter. The ILO profusion scores ranged from mild (profusion score 1) in 45% of cases, through moderate (profusion score 2) in 27%, and severe (profusion score 3) in 28%. CONCLUSIONS: The chest radiograph allowed identification of 59 to 69% of cases of miliary tuberculosis with a high specificity and good interobserver agreement.

Adolescent↗
PubMed1998

Miliary tuberculosis in children: a clinical review.

Miliary tuberculosis infection in childhood remains a significant health problem in developing countries. To characterize the clinical features of the disease, symptoms, signs and laboratory findings, associated infections and outcomes of the 23 children (14M, 9F) with miliary tuberculosis admitted to the Dicle University Hospital, Diyarbakir, Turkey from 1990 to 1997 were analysed. Mean age of the patients was 3.7 y ranging between 6 months and 11 y. All but 3 patients were below 6 y of age, and 5 of the patients were under 1 y of age. All of the children had not received BCG vaccination except for 1 who was immunized after the age of 5 y. Only 6 children had a positive reaction to 5 TU tuberculin test at admission to hospital. Eight of the 23 subjects were infected in the family, and all were nonHIV infected cases. All of the children were diagnosed clinically and by a miliary infiltrate visible on chest roentgenogram. Five cases had positive culture results for Mycobacterium tuberculosis. Duration of onset of symptoms prior to admission ranged between 15 d and 8 months with a mean of 58 d. The most frequently seen symptoms and clinical findings were fever in 17 cases, rales in 14, loss of appetite and weight in 10 and hepatosplenomegaly in 9 cases. Two cases had prior measles infection and 1 of the patients presented facial paralysis. Seven cases had also tuberculous meningitis. The outcome in general was good, with mortality in 2 cases.

Antitubercular Agents↗
PubMed2003

Overt and cryptic miliary tuberculosis misdiagnosed until autopsy.

Autopsy confirmed deaths due to miliary tuberculosis in Finland were analysed in order to improve the diagnosis of the disease. Tuberculosis deaths from mortality statistics were examined in order to identify miliary tuberculosis deaths, and the medical records of the autopsied cases were studied. The deceased were divided into 2 groups, 'overt' disease and 'cryptic' disease, on the basis of chest X-ray findings. There were 114 overt (mean age 79 y) and 140 cryptic (mean age 78 y) miliary tuberculosis cases. The majority of patients in both groups were females. There was no difference between the groups in history of previous tuberculosis, in predisposing factors or in symptoms. Suspicion of tuberculosis was recorded before death in 86% in overt form and in 53% in cryptic form. In overt disease 50% of the patients received chemotherapy, but in cryptic form only a quarter were treated. In one third of cases autopsy had been carried out without suspicion of tuberculosis. Suspicion of tuberculosis had arisen too seldom, especially in the cryptic group. On the other hand, those suspected to have tuberculosis were not promptly treated with the appropriate chemotherapy. Absence of suspicion and delayed diagnosis mean increased risk in health care and at autopsy.

Adult↗
PubMedDate not supplied

High resolution CT findings of miliary tuberculosis.

PURPOSE: The purpose of this study was to analyze high resolution CT (HRCT) findings of miliary tuberculosis and to assess the clinical utility of HRCT in the management of patients with miliary tuberculosis. METHOD: We reviewed retrospectively HRCT scans of 25 patients with histopathologically (n = 16) and/or microbiologically (n = 9) proven miliary tuberculosis. RESULTS: HRCT scans showed miliary nodules in 24 patients, which varied in size from 1 to 5 mm, with either sharply (n = 21) or poorly (n = 3) defined margins. The nodules had diffuse random distribution throughout both lungs and within the secondary pulmonary lobules. In 23 patients, areas of ground-glass opacities (GGOs) were observed with variable extent and distribution. The patients who had dyspnea showed large areas of GGOs, and two patients with impending adult respiratory distress syndrome revealed extensive GGOs. Both intralobular reticulation and interlobular septal thickening were seen in 10 patients. CONCLUSION: Miliary nodules and GGOs are the predominant HRCT findings in patients with miliary tuberculosis, and HRCT scans are helpful in the early diagnosis and proper management of patients with miliary tuberculosis.

Adult↗