Suspected pelvic endometriosis was prospectively evaluated in 31 women with T1-and T2-weighted conventional spin-echo (CSE) magnetic resonance imaging alone and in combination with T1-weighted fat-suppressed (TlFS) and gadolinium-enhanced TlFS (GI-TlFS) spin-echo techniques. Images were grouped for interpretation and comparison as follows: [a) CSE alone, @) CSE/TlFS, and (c) CSE/TlFS/ GI-TlFS. AU patients underwent surgery within 3 months of imaging, and 21 patients were found to have endometriosis: 59 endometriomas (26 large and 33 small) and 51 sites of implants were seen. With CSE images. 23 large and six small endometriomas were detected. With CSE/TlFS images. 25 large and 14 small endometriomas were identified. With CSE/ TlFS/Gd-TlFS images. 24 large and 14 small endometriomas were detected and ill-detlned areas of enhancement were noted in 22 sites throughout the pelvis. These corresponded to endometriotic implants seen at surgery in 14 sites. The sensitivity, specificity. and accuracy, respectively. for the detection of endometriosis were 76%. 60%. and 71% for CSE, 86%. 50%. and 74% for CSE/TlFS, and 81%, 50%. and 71% for CSE/TlFS/Gd-TlFS images.No significant differences (P > .l) between image combinations for correctly identifying patients with and without endometriosis were seen. The difference in sensitivity between CSE and CSE/TlFS and between CSE and CSE/TlFS/Gd-TlFS images for detecting smaU endometriomas was significant (P = .03).

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We report a case of alveolar soft-part sarcoma involving the posterior paraspinal musculature of the neck. This rare tumor of uncertain histogenesis typically occurs in the lower extremities in young adults and in the tongue or orbit in infants.

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Security problem in MANET has been prevailing even after several researches by the various authors. Since application of security mechanism affects the system performance very much therefore there is always scope for further research in this area. Another major cause is fast technology growth in the area of MANET. Recent researches are focusing on another mechanism of security which involves trust management or Identity Based Cryptography (IBC) which has improved the security of the MANET to a great extent. This paper provides a modified trust mechanism for increasing the security over MANET using IBC along with reduced processing time and load on the system. It assigns keys to every incoming node which is used only once per communication between the nodes and hence high performance is assured.