 So this can also happen to you that somebody refers a case to you to find the extent of the disease. And this particular case, the case was basically carcinoma in a seed. So a very early stage carcinoma, the clinicians still want to exclude the possibility of underlying involvement of the other structures. So this was referred to us to find the tumor. And what we do here, we simply switch to search as usual and try to find the tumor. So patient has undergone the biopsy already and patient has a known case of carcinoma in situ. And what we see along with the glance pen as there is some irregularity in this location, some titowated hypo intensity, you can see the regularity on the surface here. Okay. So that is the only area which is picking up my eye. Otherwise, I do not see any mass. And we already know this is a case of carcinoma in situ. That should be very small tumor. A surgeon just want to rule out the possibility of local extension underneath. So after this, I will simply move to the coronal images and see the same area on the coronal if I can find more. Same area here. Same area here. So I'm not seeing any legion per se. And this is the glance penis there, which is looking just fine. And then I will go to axial images to find this area. And that is the area here. So I'm not seeing a mass anywhere, but I'm seeing this irregularity and hypo intensity involving that area that corresponds to known mass based on the clinical notes which I read. So these findings are consistent with the known carcinoma in situ, but we did not see any mass in this particular case. So showing a negative case is also good because that gives credit and confidence that it is not inflicted tumor there. And we can quickly go to the post contrast images and see if something different is there on post contrast images specifically. So we are seeing a little bit of more enhancement than expected and that corresponds to the known cancer in that location, but we do not see a mass which is hypo intense or definition or outline of the mass there.