 This next patient, a pediatric patient, has six nerve palsy of presentation. You have one single sagittal T1 weighted image. You should, without blinking, be able to identify the abnormality. So go ahead. I'm going to move on to question number one, so you may wish to pause because I'm going to give you the answer, but here comes the question. Number one, Cordoma is suspected as an infracellar lesion in all of the following scenarios except, a, condroid components with areas of T2 spinneco hyperintensity, b, propensity for the midline, clivus, and C2, c, destructive, d, lobulated irregular bulky mass. E does not calcify. F, size saliferous cells on path. That's a mouthful. Let's go back to our imaging. Our image shows a mass that's rather smooth, but it has amputated the tip of C2. There's been no surgery. It has all but amputated the inferior tip of the clivus. In this position, this nodecordal remnant lesion has a characteristic location, namely right at the tip of the clivus, right along the tip of C2, but it's sometimes more lobulated, more irregular, more cauliflower-like in character, and that is the cordoma. The cordoma, not uncommonly, has condroid components, as was suggested in choice A. Those condroid components will have some condroid matrix co-mingled with other histologic types, and the condroid components are bright on the T2-weighted image, so A is a true statement. Choice B, propensity for the midline clivus and C2 is a true statement related to question number one, which is, cordoma is suspected as an infracellar lesion in all the following scenarios, except, so far, scenario A is okay, scenario B is okay, scenario C, destructive. It is destructive. It's amputated C2. It's destroyed the basilar tip of the clivus. Choice D, lobulated, irregular, bulky mass. Well, it's bulky. It's not that irregular, it's not that lobulated, but it frequently is. This one just happens to be a little bit smoother. But choice E, that's the one that doesn't fit. These lesions are associated with calcification. They are associated with bone destruction, so you may see bone fragments and calcification together. So E is the correct, false choice. It's the exception to the rule of these other choices. All of which are true. A is true, B is true, C, D, and F, which is a distractor. Psi, celliferous cells on path, well, you don't have to know that. You just have to know that cordoma is calcifying. And if you don't know that, you might be in trouble.