ArticleJACC. Case reports2026
Bilateral Absence of the Superior Vena Cava: Clinical Implications, Diagnostic Challenges, and Management Considerations.
Article in JACC. Case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundBilateral absence of the superior vena cava (BASVC) is a rare congenital venous anomaly that is often under-recognized and may complicate both diagnostic and interventional procedures. CLINICAL CONTEXT: An illustrative pediatric case of BASVC presenting with gross hematuria is described to highlight the diagnostic challenges and potential hemodynamic implications of abnormal venous drainage. REVIEW SUMMARY: BASVC may remain asymptomatic or present with a wide range of nonspecific manifestations. Altered venous return and increased renal venous pressure may explain atypical presentations such as hematuria. Cross-sectional imaging plays a central role in diagnosis and procedural planning. FUTURE DIRECTIONS: Multicenter registries and long-term follow-up studies are needed to better define the natural history and optimal management strategies for patients with BASVC. TAKE-HOME MESSAGE: Early recognition of BASVC is essential to prevent potentially life-threatening complications during vascular or cardiac procedures.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.