# Unexpected Infective Endocarditis Presenting With Multiple Pulmonary Emboli Despite Negative High-Risk Imaging

**Authors:** Nyan Myint

PMC · DOI: 10.7759/cureus.102844 · Cureus · 2026-02-02

## TL;DR

A patient with infective endocarditis had multiple lung emboli but normal heart imaging, challenging typical diagnostic expectations.

## Contribution

This case report presents an atypical clinical scenario where IE was diagnosed despite negative cardiac imaging.

## Key findings

- Infective endocarditis was confirmed in a patient with multiple pulmonary emboli.
- Transthoracic and transesophageal echocardiography results were negative.
- The case challenges the assumption that embolic events always correlate with visible cardiac vegetations.

## Abstract

Infective endocarditis (IE) is notorious for causing septic emboli in major organs, especially the brain, spleen, and lungs. These emboli are expected to be caused by the shedding of vegetations that form on the endocardium of the heart. Therefore, positive findings of IE are generally expected on cardiac imaging, such as transthoracic echocardiography (TTE) and transesophageal echocardiography (TEE), when septic emboli are identified in a high-risk patient. This case highlights negative TTE and TEE findings in a patient with infective endocarditis who had an extensive burden of bilateral, multiple pulmonary emboli.

## Linked entities

- **Diseases:** infective endocarditis (MONDO:0000565)

## Full-text entities

- **Genes:** SLC17A5 (solute carrier family 17 member 5) [NCBI Gene 26503] {aka AST, ISSD, NSD, SD, SIALIN, SIASD}, NPPB (natriuretic peptide B) [NCBI Gene 4879] {aka BNP, Iso-ANP}, ALPP (alkaline phosphatase, placental) [NCBI Gene 250] {aka ALP, PALP, PLAP, PLAP-1}, GPT (glutamic--pyruvic transaminase) [NCBI Gene 2875] {aka AAT1, ALT, ALT1, GPT1, SGPT}, CMPK1 (cytidine/uridine monophosphate kinase 1) [NCBI Gene 51727] {aka CK, CMK, CMPK, UMK, UMP-CMPK, UMPK}
- **Diseases:** joint pain (MESH:D018771), cough (MESH:D003371), renal calculi (MESH:D007669), hydronephrosis (MESH:D006869), anorexia (MESH:D000855), edema (MESH:D004487), dyspnea (MESH:D004417), chills (MESH:D023341), pseudoaneurysm (MESH:D017541), bacteremia (MESH:D016470), pulmonic valve regurgitation (MESH:D006349), weakness (MESH:D018908), hematuria (MESH:D006417), valvular or congenital heart disease (MESH:C535576), urinary retention (MESH:D016055), glomerulonephritis (MESH:D005921), abscess (MESH:D000038), vegetation (MESH:D018458), airspace disease (MESH:D004194), gastroesophageal reflux disease (MESH:D005764), IVDU (MESH:D015819), MRSA endocarditis (MESH:D013203), systole (MESH:D000092244), dysuria (MESH:D053159), mitral regurgitation (MESH:D008944), Infectious Diseases (MESH:D003141), sepsis (MESH:D018805), fungal (MESH:D009181), intracardiac fistula (MESH:C538262), incontinence (MESH:D014549), neurological deficits (MESH:D009461), pulmonary embolism (MESH:D011655), fistulas (MESH:D005402), proteinuria (MESH:D011507), CIED (MESH:D009471), Pulmonary Emboli (MESH:D020766), septic (MESH:D001170), fever (MESH:D005334), aortic or pulmonic regurgitation (MESH:D001022), fatigue (MESH:D005221), tuberculosis (MESH:D014376), Acute kidney injury (MESH:D058186), tenderness (MESH:D063806), Embolic (MESH:D004617), skin rashes (MESH:D005076), aortic valve (MESH:D001024), tricuspid regurgitation (MESH:D014262), sinus tachycardia (MESH:D013616), IE (MESH:D004696), tricuspid (MESH:D018785), abdominal tenderness (MESH:D000007), renal dysfunction (MESH:D007674), heart failure (MESH:D006333)
- **Chemicals:** 18F-FDG (MESH:D019788), ceftaroline (MESH:C490727), piperacillin-tazobactam (MESH:D000077725), oxygen (MESH:D010100), Free T4 (-), thyroxine (MESH:D013974), methicillin (MESH:D008712), vancomycin (MESH:D014640)
- **Species:** Homo sapiens (human, species) [taxon 9606], Staphylococcus aureus (species) [taxon 1280]

## Full text

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## Figures

18 figures with captions in the complete paper: https://tomesphere.com/paper/PMC12959851/full.md

## References

14 references — full list in the complete paper: https://tomesphere.com/paper/PMC12959851/full.md

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Source: https://tomesphere.com/paper/PMC12959851