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Due to technological advances that have taken place in recent years, optical coherence tomography retinal imaging provides qualitative data of informational value similar to the one of data obtained with conventional histological techniques. Correlation of optical coherence tomography images with histological retinal cross-sections enables the identification of the major retinal layers and anatomical structures. If the retina is pathologically altered, it is possible to visualize pathophysiological processes responsible for reflectivity changes, such as: activation of apoptosis and necrosis, phagocytic cell infiltration and dye accumulation in glial cells.

The study presented a rare case of jejunal adenocarcinoma in a 60-year-old patient with symptoms of high subileus. No risk factors or coexisting diseases, which predispose towards intestinal cancer were detected. The study contained a description of the performed surgical procedure. The presented case illustrated the diagnostic and therapeutic difficulties in patients with small intestinal cancer. The low prevalence of small intestinal cancer makes no clear standards of mid- and postoperative treatment, including the qualification for adjuvant chemotherapy. The aim of this study was to broaden the knowledge concerning the presented symptoms and diagnostic test abnormalities, which, in case of rare diseases, is based on single patient reports. Furthermore, according to reference analyses, postoperative recommendations were presented, including diagnostics towards coexisting predisposing diseases.

Purpose: In this study, we demonstrate the advantages of high-resolution optical coherence tomography for the non-invasive, in vivo, three-dimensional imaging of the mouse retina., Methods: High-resolution optical coherence tomography images of the mouse retina were acquired using the Bioptigen Envisu R2200-HR SD-OCT system. We measured the retinal thickness and compared the measurements to those obtained using conventional histology techniques., Results: High-resolution spectral-domain optical coherence tomography enables high-quality in vivo visualization of retinal structures in mice, providing an accurate quantitative description of retinal layers. Additionally, the ultra-high-speed system offers many advantages over histology, e.g., it permits the visualization of retinal microvasculature and pulsatile flow dynamics., Conclusions: Spectral domain optical coherence tomography is a new important tool for the in vivo analysis of mouse eyes.