Cerebral developmental venous anomalies (DVAs) are variations of venous vascular anatomy related to an underdevelopment of either the superficial or deep venous emissary system, resulting in a dilated transmedullary vein fed by multiple smaller venous radicles responsible for drainage of normal brain parenchyma. While typically benign and found incidentally on imaging studies, DVAs can rarely be symptomatic. The radiographic appearance of DVAs, as well as their symptomatic manifestations, is diverse. Herein, we will discuss the pathophysiology of symptomatic DVAs while providing illustrative case examples depicting each of their pathogenic mechanisms.

中文翻译：

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有症状的发展性静脉异常。

脑发育静脉异常（DVA）是与浅表或深部静脉发射系统发育不足有关的静脉血管解剖结构的变异，导致由多个较小的静脉胚根供入的扩张的经髓静脉，负责正常脑实质的引流。尽管DVA通常是良性的，并且在影像学研究中偶然发现，但DVA很少有症状。DVA的射线照相外观及其症状表现是多种多样的。在这里，我们将讨论有症状DVA的病理生理学，同时提供描述其每种致病机制的示例病例。