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Subtle Sonographic Signs of Disseminated Tuberculosis: A Case Report and Narrative Literature Review.

ABSTRACT: Miliary tuberculosis is a form of disseminated tuberculosis that can be difficult to detect when the classic pattern is absent on chest radiograph and advanced cross-sectional imaging is not readily available. While the focused assessment with sonography for HIV-associated tuberculosis (FASH) protocol for extrapulmonary tuberculosis emphasizes easy-to-teach findings, experienced sonographers may detect additional, subtler signs that can aid in diagnosis. We report a case of a 20-year-old man with miliary tuberculosis diagnosed on computed tomography of the chest. We describe subtle sonographic signs of disseminated tuberculosis including subpleural irregularities and comet-tail artifacts, a bright liver pattern, peritoneal nodules, and a nonspecific sponge spleen pattern. We then discuss important differential diagnoses for each finding. Knowledge of subtle sonographic signs outside of the FASH protocol can aid clinicians in detecting disseminated tuberculosis, including the miliary form, when advanced imaging may not be available.

SUBMITTER: Hodson DZ

PROVIDER: S-EPMC11376169 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature

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Subtle Sonographic Signs of Disseminated Tuberculosis: A Case Report and Narrative Literature Review.

Hodson Daniel Z DZ Kumwenda Tapiwa T Wallrauch Claudia C Rambiki Ethel E Tymchuk Christopher C Taccari Francesco F Heller Tom T

The American journal of tropical medicine and hygiene 20240716 3

Miliary tuberculosis is a form of disseminated tuberculosis that can be difficult to detect when the classic pattern is absent on chest radiograph and advanced cross-sectional imaging is not readily available. While the focused assessment with sonography for HIV-associated tuberculosis (FASH) protocol for extrapulmonary tuberculosis emphasizes easy-to-teach findings, experienced sonographers may detect additional, subtler signs that can aid in diagnosis. We report a case of a 20-year-old man wit ...[more]

PMID: 39013377

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Project description:BackgroundTuberculosis (TB) is a leading cause of morbidity and mortality in underdeveloped and developing countries. Disseminated TB may induce uncommon and potentially fatal secondary hemophagocytic lymphohistiocytosis (HLH). Timely treatment with anti-tuberculosis therapy (ATT) and downmodulation of the immune response is critical. However, corticosteroid treatment for TB-associated HLH remains controversial. Herein, we report a successful case of disseminated TB-associated HLH in a pregnant woman with Evans syndrome accompanied by a literature review.Case presentationA 26-year-old pregnant woman with Evans syndrome was transferred to the Third Affiliated Hospital of Sun Yat-Sen University because of severe pneumonia. She presented with cough, fever, and aggravated dyspnea. Nested polymerase chain reaction for Mycobacterium tuberculosis (M. tuberculosis) complex in sputum was positive. Sputum smear sample for acid-fast bacilli was also positive. Metagenome next-generation sequencing (mNGS) of the bronchoalveolar lavage fluid identified 926 DNA sequence reads and 195 RNA sequence reads corresponding to M. tuberculosis complex, respectively. mNGS of blood identified 48 DNA sequence reads corresponding to M. tuberculosis. There was no sequence read corresponding to other potential pathogens. She was initially administered standard ATT together with a low dose of methylprednisolone (40 mg/day). However, her condition deteriorated rapidly with high fever, acute respiratory distress syndrome, pancytopenia, and hyperferritinemia. Bone marrow smears showed hemophagocytosis. And caseating tuberculous granulomas were found in the placenta. A diagnosis of disseminated TB-associated HLH was made. Along with the continuation of four drug ATT regimen, therapy with a higher dose of methylprednisolone (160 mg/day) combined with immunoglobulin and plasma exchange was managed. The patient's condition improved, and she was discharged on day 19. Her condition was good at follow-up with the continuation of the ATT.ConclusionsClinicians encountering patients with suspected TB accompanied by unexplainable inflammation not responding to ATT should consider complications with HLH. Timely administration of ATT combined with corticosteroids may result in a favorable outcome.

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Subtle Sonographic Signs of Disseminated Tuberculosis: A Case Report and Narrative Literature Review.

Publications

Subtle Sonographic Signs of Disseminated Tuberculosis: A Case Report and Narrative Literature Review.

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