Evan S. Dellon

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In 1779, Felice Fontana, using a six-power hand-held magnifying lens, described what appeared to be spiral bands surrounding the peripheral nerve. He hypothesized that these bands were due to an optical illusion related to the underlying undulations of the individual nerve fibers, which he was the first to observe with an early microscope. The present study(More)
OBJECTIVE The quality of colonoscopy procedures for colorectal cancer screening is often inadequate and varies widely among physicians. Routine measurement of quality is limited by the costs of manual review of free-text patient charts. Our goal was to develop a natural language processing (NLP) application to measure colonoscopy quality. MATERIALS AND(More)
The anatomy of the lateral femoral cutaneous nerve was investigated through dissection of 52 human anatomic specimens. The variability of its course and locations as it exists the pelvis is described and related to soft-tissue and bony landmarks. Five different types are identified: type A, posterior to the anterior superior iliac spine, across the iliac(More)
The desmosomal cadherin desmoglein-1 (DSG1) is an essential intercellular adhesion molecule that is altered in various human cutaneous disorders; however, its regulation and function in allergic disease remains unexplored. Herein, we demonstrate a specific reduction in DSG1 in esophageal biopsies from patients with eosinophilic esophagitis (EoE), an(More)
The relationship of measures of pressure perception to hand function was evaluated by correlating the results of the Mayo Dexterity Test and a timed object recognition test with the one- and two-point static and moving touch thresholds for the index finger pulp of 44 hands. The Mayo Dexterity Test permits the use of vision, while the object recognition test(More)
The variability of eosinophilic infiltrates in eosinophilic esophagitis is not well described. This study aimed to determine the distribution of esophageal eosinophilia and the utility of histologic cut-points for eosinophilic esophagitis diagnosis in subjects undergoing endoscopy. We performed a prospective study of adults undergoing outpatient endoscopy.(More)
We present a series of cases of acute esophageal necrosis along with a video demonstration. The video captures a case showing the severity of necrosis of the esophageal mucosa; an orogastric tube easily passed through the esophageal lumen and into the right hemithorax. The series also demonstrates the severity of this illness, with an associated high(More)
This case report presents an unusual complication of upper endoscopy, resulting in jaw dislocation. Temporomandibular joint dislocation is commonly reported in association with anesthesia and intubation, but it is not widely recognized as a complication of gastrointestinal endoscopy. This report also reviews the current literature regarding this(More)
Herpes simplex esophagitis (HSE) is an acute, severe viral infection of the esophagus, rarely occurring in immunocompetent individuals. Eosinophilic esophagitis (EoE) is a rare immune-mediated esophageal disorder. We recently observed 5 severe HSE cases in diagnosed EoE patients. Four of the 5 patients had active, untreated EoE at the time of infection, so(More)
In the absence of overt structural abnormalities, the diagnostic approach to chronic abdominal pain can be challenging. Occupational particulate inhalation causing injury to an organ other than the lung is rare. We report a case of inadvertent glass microparticulate ingestion causing chronic abdominal pain with altered local and systemic inflammatory(More)