Classification of lower extremity venous malformations and risk of knee involvement: A retrospective cohort study - 18/11/21
Abstract |
Background |
Venous malformation (VM) is the most common vascular anomaly in the lower extremity. VMs can be classified as focal, multifocal, or diffuse types. Intraarticular VM (IA-VM) of the knee portends morbidity. Association of the lower extremity VM type with IA-VM is not well defined.
Objective |
To classify a large cohort of lower extremity, nonsyndromic VMs by type and determine associations with IA-VM.
Methods |
Retrospective cohort study.
Results |
We assessed 156 patients with nonsyndromic, lower extremity VM; 71 (46%) were focal and 85 (54%) were diffuse type VM, and 97 (62%) were IA-VM. Of diffuse VMs, 26 (31%) were Bockenheimer and 59 (69%) were localized subtypes. Pure VM had a significantly elevated risk of IA-VM (relative risk [RR], 2.34; 95% confidence interval [CI], 1.42-3.89). IA-VM was more common in diffuse (73%) versus focal (49%) types. Risk of IA-VM in diffuse type VM was significantly elevated (RR, 1.48; 95% CI, 1.13-1.94). One hundred percent of diffuse Bockenheimer type VM had IA-VM, and this subtype had the highest risk (RR, 1.83; 95% CI, 1.56-2.14) of IA-VM.
Limitations |
Retrospective, single-institution study.
Conclusions |
Intraarticular involvement of the knee should be considered in all lower extremity VMs. Pure VM and the Bockenheimer diffuse VM subtype had the highest risk of IA-VM.
Il testo completo di questo articolo è disponibile in PDF.Key words : articular, Bockenheimer, intraarticular, joint, knee, vascular anomaly, vascular malformation, venous, venous malformation
Abbreviations used : BRBNS, CI, CLVM, CMVM, CVM, IA-VM, KTS, MRI, RR, VLM, VM
Mappa
| Funding sources: None. |
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| IRB approval status: Reviewed and approved by Boston Children's Hospital IRB. |
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| Reprints are not available from the authors. |
Vol 85 - N° 6
P. 1480-1485 - dicembre 2021 Ritorno al numero
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