Truong L, Font R L
Arch Ophthalmol. 1985 Sep;103(9):1364-7. doi: 10.1001/archopht.1985.01050090116045.
Intravenous pyogenic granuloma is a recently described form of pyogenic granuloma (PG) in which the angiomatous proliferation is confined entirely within the lumen of a vein. To our knowledge, only four cases involving the ocular adnexa, including two that we encountered, have been described. Histologically, this benign lesion is similar to PG of other locations and is characterized by lobular congeries of capillaries embedded in a fibromyxoid matrix containing scattered chronic inflammatory cells. The whole lesion appears as a single polypoid mass projecting into the lumen of a dilated vein. The histogenesis of this lesion remains obscure. Complete local excision is the treatment of choice. Intravenous PG can be differentiated from other intravascular fibroangiomatous proliferations, including intravascular papillary endothelial hyperplasia, intravenous atypical vascular proliferation, intravascular fasciitis, and organized thrombus.
静脉内化脓性肉芽肿是化脓性肉芽肿（PG）的一种最近才被描述的类型，其中血管增生完全局限于静脉腔内。据我们所知，仅描述了4例累及眼附属器的病例，包括我们遇到的2例。组织学上，这种良性病变与其他部位的PG相似，其特征是小叶状的毛细血管团块嵌入含有散在慢性炎症细胞的纤维黏液样基质中。整个病变表现为单个息肉样肿物突入扩张静脉的腔内。该病变的组织发生仍不清楚。完整的局部切除是首选的治疗方法。静脉内PG可与其他血管内纤维血管增生性病变相鉴别，包括血管内乳头状内皮增生、静脉内非典型血管增生、血管内筋膜炎和机化血栓。
