Sclerosing mesenteritis diagnosed with computed tomography and ultrasound-guided needle biopsy: the utility of the coaxial technique.

Here we report a case of sclerosing mesenteritis that we diagnosed with needle biopsy under the guidance of computed tomography (CT) and ultrasound (US) observation. An 82-year-old woman presented with appetite loss, weight loss and epigastric pain. CT of the abdomen and pelvis revealed increased density of the mesentery adjacent to the small bowel and enlarged lymph nodes. Sclerosing mesenteritis was suspected, but malignancies, such as lymphoma, were also considered. We performed CT and US-guided needle biopsy with the coaxial technique. An introducer needle was inserted, its correct location was documented with CT, and multiple specimens were taken with a finer needle passed through the introducer without incident. Adequate specimens were obtained, and the histological diagnosis of sclerosing mesenteritis was made. We treated the patient with corticosteroids and her symptoms and the radiographic findings improved. The coaxial technique was a useful and minimally invasive tool for making the diagnosis of sclerosing mesenteritis.