Hilar cholangiocarcinoma is the most common cause of a stricture in the hilar region, and hilar stricture in the absence of any previous surgical intervention should be considered to indicate malignant disease until proven otherwise. We present a rare case of isolated hilar tubercular stricture, all the features of which were suggestive of malignancy.

In the nineties the disconnection between physical experience and the digital networked experience was celebrated individuals were said to move into cyberspace, become virtual and leave the constraints of the physical realm. Despite the very real existence of tracking and surveillance software, it remains the case that identity assertions online remain problematic at best. While there are many ...

To gain access to account privileges, an intruder masquerades as the proper account user. Information from user feedback helps to improve the accuracy of classifiers used for detecting masquerades. Instead of operating in isolation, the online sequential classifier can request feedback from the user. In the full-feedback policy, the classifier verifies every session; in the feedback-on-alarm po...

Motion is generally assumed to "break" camouflage. However, although camouflage cannot conceal a group of moving animals, it may impair a predator's ability to single one out for attack, even if that discrimination is not based on a color difference. Here, we use a computer-based task in which humans had to detect the odd one out among moving objects, with "oddity" based on shape. All objects w...

Melanoma of the eye is rare, but can mimic a range of disorders. This report highlights 2 cases of choroidal melanoma with vision loss mimicking neurological diagnoses. The first patient is a 41-year-old white male with a known history of multiple sclerosis and a previous episode of optic neuritis in the right eye, who presented with a 6-month history of decreased vision in the same eye, and oc...

Masquerade attack refers to an attack that uses a fake identity, to gain unauthorized access to personal computer information through legitimate access identification. Automatic discovery of masqueraders is sometimes undertaken by detecting significant departures from normal user behavior. If a user's normal profile deviates from their original behavior, it could potentially signal an ongoing m...

Real-world data collection poses an important challenge in the security field. Insider and masquerader attack data collection poses even a greater challenge. Very few organizations acknowledge such breaches because of liability concerns and potential implications on their market value. This caused the scarcity of real-world data sets that could be used to study insider and masquerader attacks. ...

Taxol is a potent anti-mitotic drug used in chemotherapy, angioplastic stents, and cell biology research. By binding and stabilizing microtubules, Taxol inhibits their dynamics, crucial for cell division, motility, and survival. The drug has also been reported to induce formation of asters and bundles composed of stabilized microtubules. Surprisingly, at commonly used concentrations, Taxol form...