Purpose: Optical coherence tomography (OCT) is an optical imaging method that can visualize cellular and extracellular structures at and below tissue surface. The objective of the study was to determine if OCT could characterize preneoplastic changes in the bronchial epithelium identified by autofluorescence bronchoscopy. Experimental Design: A 1.5-mm fiberoptic probe was inserted via a bronchoscope into the airways of 138 volunteer heavy smokers participating in a chemoprevention trial and 10 patients with lung cancer to evaluate areas that were found to be normal or abnormal on autofluorescence bronchoscopy. Radial scanning of the airways was done to generate OCT images in real time. Following OCT imaging, the same sites were biopsied for pathologic correlation. Results: A total of 281OCT images and the corresponding bronchial biopsies were obtained.The histopathology of these areas includes 145 normal/hyperplasia, 61metaplasia, 39 mild dysplasia, 10 moderate dysplasia, 6 severe dysplasia, 7 carcinoma in situ, and 13 invasive carcinomas. Quantitative measurement of the epithelial thickness showed that invasive carcinoma was significantly different than carcinoma in situ (P = 0.004) and dysplasia was significantly different than metaplasia or hyperplasia (P = 0.002). In addition, nuclei of the cells corresponding to histologic results became more discernible in lesions that were moderate dysplasia or worse compared with lower-grade lesions. Conclusion: Preliminary data suggest that autofluorescence bronchoscopy^guided OCT imaging of bronchial lesions is technically feasible. OCT may be a promising nonbiopsy tool for in vivo imaging of preneoplastic bronchial lesions to study their natural history and the effect of chemopreventive intervention.Lung cancer is the most common cause of cancer death worldwide, with more than 1.3 million people dying of lung cancer annually (1). The 5-year survival rates after the diagnosis of lung cancer has improved only marginally in the last 3 decades (2). Although early detection and chemoprevention is effective in reducing the incidence and mortality of cancer of the breast, there is considerable skepticism in applying the same cancer control strategy in lung cancer. The most common criticism is the uncertain identity of intraepithelial neoplastic (IEN) lesions and the natural history of these lesions.There are unique challenges in detecting and treating IEN lesions in the lung compared with other organs. The lung is an internal organ consisting of a complex branching system of conducting airways leading to gas exchange units. Lung cancer consists of four major cell types: squamous cell carcinoma, adenocarcinoma, large cell carcinoma, and neuroendocrine tumors (3). They are preferentially located in different parts of the bronchial tree. For example, squamous cell carcinoma and neuroendocrine tumors are more frequently found in the larger central airways compared with adenocarcinoma, which is more frequently found in the small peripheral airways and lung parenchyma. Au...

The development of array comparative genomic hybridization (array CGH) at tiling-path resolution has enabled the detection of gene-sized segmental DNA copy number gains and losses. Here, we present the first application of whole genome tiling-path array CGH to archival clinical specimens for the detailed analysis of oral squamous cell carcinomas (OSCC). We describe the genomes of 20 OSCCs as well as a selection of matched normal DNA in unprecedented detail. Examination of their whole genome profiles enabled the identification of alterations ranging in size from whole-arm, segmental, to gene size alterations. Tiling-path resolution enabled the detection of many more alterations within each tumor than previously reported, many of which include narrow alterations found to be frequent events among the 20 OSCCs. We report the presence of several novel frequent submegabase alterations, such as the 0.58 Mb gain at 5p15.2 containing triple functional domain (TRIO), detected in 45% of cases. We also report the first coamplification of two gene clusters, by fine-mapping the precise base pair boundaries of the high-level amplification at 11q22.2-22.3 containing both matrix metalloproteinase and baculoviral IAP repeatcontaining protein 2 (BIRC) gene clusters. These results show the large improvement in detection sensitivity and resolution compared with genome interval marker arrays and the utility of tiling resolution array CGH for the detection of both submegabase and single copy gains and losses in cancer gene discovery. (Cancer Res 2005; 65(17): 7561-7)

ObjectiveRheumatoid arthritis (RA) disproportionately affects more women than men, often striking during childbearing years. Because the Internet, particularly social media, is increasingly used by patients with chronic conditions seeking and sharing information, our objective was to conduct a qualitative descriptive study of threads on the social news website, Reddit, to understand the information needs and concerns of women with RA regarding pregnancy and parenting.MethodsWe searched threads (original posts and responses) on three subreddit sites, “r/Thritis,” “r/Rheumatoid,” and “r/BabyBumps,” over a 10‐year period between October 27, 2008, and October 27, 2018. All threads were reviewed, and those that specifically mentioned having RA and fertility/family planning, pregnancy/reproduction, and/or parenting/having children were included. We applied a thematic analysis to the threads, which involved initial line‐by‐line coding, clustering of codes into subcategories and categories, and abstraction into final themes.ResultsWe identified 87 threads and included 59 for qualitative analysis. The thematic analysis led to the identification of five themes. Theme one (finding a community) captures motivations for seeking information online. Themes two (making decisions about pregnancy and having children) and three (worrying about the impacts of arthritis on pregnancy and parenting) capture women's concerns and thought processes. Themes four (information needs for managing arthritis throughout the perinatal period) and five (pregnancy information and resources for women with arthritis) describe the community's specific informational needs.ConclusionA qualitative analysis of publicly available threads about the relationship between RA and issues of pregnancy and parenting identified areas of concern and further information need. These forums also provided an online community where women with RA sought social support and encouragement. Altogether, findings speak to the importance of supporting the information and care needs of women with RA who are pregnant or considering pregnancy.

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