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Spontaneous Raman microscopy reveals the chemical composition of a sample in a label-free and non-invasive fashion by directly measuring the vibrational spectra of molecules. However, its extremely low cross section prevents its application to fast imaging. Stimulated Raman scattering (SRS) amplifies the signal by several orders of magnitude thanks to the coherent nature of the nonlinear process, thus unlocking high-speed microscopy applications that provide analytical information to elucidate biochemical mechanisms with subcellular resolution. Nevertheless, in its standard implementation, narrowband SRS provides images at only one frequency at a time, which is not sufficient to distinguish constituents with overlapping Raman bands. Here, we report a broadband SRS microscope equipped with a home-built multichannel lock-in amplifier simultaneously measuring the SRS signal at 32 frequencies with integration time down to 44 µs, allowing for detailed, high spatial resolution mapping of spectrally congested samples. We demonstrate the capability of our microscope to differentiate the chemical constituents of heterogeneous samples by measuring the relative concentrations of different fatty acids in cultured hepatocytes at the single lipid droplet level and by differentiating tumor from peritumoral tissue in a preclinical mouse model of fibrosarcoma.

Objectives: The aim of the study is to demonstrate the best stress urinary incontinence (SUI) surgical technique for women with a Body mass index higher than 30. The results of Transvaginal Tension Free Vaginal Tape-Obturator and Mini-sling surgery were analyzed and compared through both clinical examination and standardized questionnaires at 36 months of follow-up. Materials and methods: This is a retrospective multicenter study over 159 women with SUI who underwent surgery. Seventy-eight women underwent TVT-O and 81 Mini-sling technique. Intra and post-operative complications were recorded. Patients were monitored for 36 months by analyzing symptoms, voiding diary, quality of life and sexual activity through standardized questionnaires. Results: Complications had a low incidence in both groups and inter-group differences were superimposable. Only groin pain was statistically higher after TVT-O than after Mini-sling (12.8% vs1.2%, p = 0.03). At 36 months of follow-up, a statistically significant decrease in Positive stress test (%) and Q-Tip test (grade) was observed in both groups with no differences between them (p = 0.54 and p = 0.32 respectively). The mean number of daily voids was higher after TVT-O (p = 0.04) than after Altis (p = 0.22) with a significant difference in favor of the Altis group (p = 0.03). After 36 months, there were no significant differences between groups in terms of quality of life and sexual activity. PGI-I did not show any difference between groups (p = 0.21). Conclusion: TVT-O and Minisling had the same efficacy and results in the surgical treatment of SUI in obese women. Both techniques relieved their symptoms and improved their quality of life without any significant difference except for a lower incidence of post- Mini-sling complications.

Anti-NMDAR encephalitis is an autoimmune syndrome associated with antibodies against NMDA receptors. In some cases, it is associated with various tumors; one of them is ovarian teratoma, which mostly affects women below the age of 30 years. Here, we report a case of ovarian teratoma associated with anti-NMDAR encephalitis treated with both laparoscopic surgery and immunotherapy. Multidisciplinary approach is the cornerstone for the management of this syndrome.