AAO images vortex vein varix mimic

A choroidal “mass” is the kind of finding that instantly raises the temperature in clinic. The scary version is melanoma. But sometimes the lesion is not a tumor at all — it is a swollen venous outflow channel in the far peripheral choroid. That is the point of the AAO Journal image case making the rounds now: a 70-year-old woman with high myopia was referred for a suspected choroidal mass, and ultra-widefield OCT angiography plus 3D reconstruction showed a vortex vein varix instead. (aaojournal.org) ### What is a vortex vein varix? A vortex vein varix is basically a focal dilation of a vortex vein ampulla — one of the veins that drains blood from the choroid out through the sclera. It is benign. It often looks like a dark red or bluish-gray elevated lesion near the eye’s equator, which is exactly why it can masquerade as a choroidal tumor. These lesions are uncommon, usually asymptomatic, and often found incidentally. (eyewiki.aao.org) ### What happened in this case? The patient was a 70-year-old woman with high myopia in the left eye. Her axial length in that eye was 27.10 mm, which matters because elongated myopic eyes distort the posterior segment and can make peripheral findings harder to read. Fundus photography showed a tessellated myopic fundus without obvious peripheral retinal abnormality, b(eyewiki.aao.org)uadrant revealed the real culprit — a vortex vein varix. (aaojournal.org) ### Why did it look like a tumor? Because a varix is an elevated choroidal structure. On routine exam, that can read as a focal mass. The catch is that the lesion is vascular and dynamic, not solid. Older reports have shown the same trick for years — vortex vein varices have been mistaken for choroidal nevus and melanoma, which is why they si(aaojournal.org)or under 1% of pseudomelanoma cases, so most clinicians will not see many. (ophthalmologyretina.org) ### What did the imaging add? This is the useful part. The AAO Journal case used ultra-widefield OCTA and then a 3D reconstruction to show the lesion as a dilated venous structure continuous with the vortex vein system. That is much more intuitive than a flat photo alone. Instead of asking, “Is this a mass?” the imaging lets(ophthalmologyretina.org)ner. (aaojournal.org) ### Why does high myopia matter here? High myopia seems to be a recurring association. The elongated globe stretches and thins tissues, changes choroidal geometry, and may make vortex vein abnormalities easier to produce or easier to see. EyeWiki now flags adults with high myopia as a group where vortex vein varix shows up more often, and the recent AAO image case fits that pattern closely. (eyewiki.aao.org) ### Could you diagnose this without OCTA? Sometimes, yes — but less confidently. Classic teaching is that the lesion may flatten or disappear with dynamic funduscopy, contact lens pressure, altered gaze, or echography maneuvers. More recent reports show similar changes with digital pressure on ultra-widefield imaging and peripheral OCT. But OCT, OCTA, ultrasound, and o(eyewiki.aao.org)vein, not a tumor” argument much easier to prove. (pubmed.ncbi.nlm.nih.gov) ### What is the practical takeaway? If you see a focal peripheral choroidal elevation in a myopic eye, especially near a vortex vein exit site, vortex vein varix belongs on the differential. Missing it does not just create diagnostic noise — it can send a patient down the melanoma workup path for a benign venous anomaly. The whole point of this image case is no(pubmed.ncbi.nlm.nih.gov)turned a scary mass into normal-ish anatomy with a twist. (aaojournal.org)