title: Successful endoscopic ultrasound-guided fine-needle aspiration of the pelvic lesion through the sigmoid colon.
abstract: Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) is a useful modality when the target is a lymph node located in the mediastinum, perigastric area or perirectum. Although it is difficult to carry out EUS-FNA of the colon using an oblique view linear scope, we report two cases of successful EUS-FNA of the lesions via the proximal sigmoid colon using a recently available new convex type EUS scope. Case 1 was a 77-year-old Japanese woman noted to have multiple lymph node swelling in the para-aortic area and in the pelvis. Case 2 was a 60-year-old Japanese woman noted to have a large mass in the left lower abdomen. In case 1, oral EUS showed no lymph node swelling. In both cases, EUS with forward-viewing radial echoendoscope was carried out via the anus, and multiple lymph-node swelling or a large mass was observed near the proximal sigmoid colon. In the EUS-FNA for these cases, we used a new convex-type EUS scope that has an oblique view, but with a wide-angled optical device giving a view similar to a forward one. EUS-FNA was successfully carried out on the lesions. The pathological specimen revealed diffuse large B-cell lymphoma in case 1 and gastrointestinal stromal tumor (GIST) in case 2.
authors.affiliation: Department of Gastroenterology General Practice Hematology Pathology, Kyushu University, Fukuoka, Japan. normatsui@yahoo.co.jp
authors.forename: Noriaki
authors.initials: N
authors.lastname: Matsui
authors.forename: Kazuya
authors.initials: K
authors.lastname: Akahoshi
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Motomura
authors.forename: Masaru
authors.initials: M
authors.lastname: Kubokawa
authors.forename: Shingo
authors.initials: S
authors.lastname: Endoh
authors.forename: Ryouhei
authors.initials: R
authors.lastname: Matsuura
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Oda
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Nakashima
authors.forename: Masafumi
authors.initials: M
authors.lastname: Oya
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Nakamura
mesh_terms: D000368:Aged; D044963:Biopsy, Fine-Needle; D003937:Diagnosis, Differential; D019160:Endosonography; D005260:Female; D046152:Gastrointestinal Stromal Tumors / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D016393:Lymphoma, B-Cell / Q000473:pathology*; D008875:Middle Aged; D012811:Sigmoid Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D018084:Ultrasonography, Interventional