title: Risky endoscopic ultrasonography-guided fine-needle aspiration for asymptomatic retroperitoneal tumors.
abstract: Paraganglioma, a sporadically occurring rare tumor should be included in the differential diagnosis of retroperitoneal tumors, such as malignant lymphomas, gastrointestinal stromal tumors, sarcoma and carcinoma of unknown primary site. A 58-year-old Japanese woman presented with a large retroperitoneal tumor detected by ultrasonography (US). She had no medical history of hypertension. Computed tomography showed a mass, 7 cm in diameter, located between the pancreas and the inferior vena cava. It was unclear whether the mass originated from the duodenum or the mesentery. Endoscopic ultrasonography (EUS) demonstrated a large solid paraduodenal mass. Doppler US revealed sparse vascularity in the tumor. With the differential diagnosis of retroperitoneal tumor, we carried out EUS-FNA. At the time of the third needle puncture, transient severe hypertension was noted, with a blood pressure measurement of 269/130 mmHg. Data obtained from urine and blood examinations after EUS-fine-needle aspiration indicated a diagnosis of paraganglioma.
authors.affiliation: Yokohama City University, Japan. kubotak@yokohama-cu.ac.jp <kubotak@yokohama-cu.ac.jp>
authors.forename: Kensuke
authors.initials: K
authors.lastname: Kubota
authors.forename: Shingo
authors.initials: S
authors.lastname: Kato
authors.forename: Hironori
authors.initials: H
authors.lastname: Mawatari
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Iida
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Akiyama
authors.forename: Koji
authors.initials: K
authors.lastname: Fujita
authors.forename: Masato
authors.initials: M
authors.lastname: Yoneda
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Takahashi
authors.forename: Masahiko
authors.initials: M
authors.lastname: Inamori
authors.forename: Yasunobu
authors.initials: Y
authors.lastname: Abe
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Kirikoshi
authors.forename: Noritoshi
authors.initials: N
authors.lastname: Kobayashi
authors.forename: Satoru
authors.initials: S
authors.lastname: Saito
authors.forename: Atsushi
authors.initials: A
authors.lastname: Nakajima
mesh_terms: D044963:Biopsy, Fine-Needle / Q000009:adverse effects / Q000379:methods*; D019160:Endosonography; D005260:Female; D006801:Humans; D008875:Middle Aged; D010235:Paraganglioma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000628:therapy; D012186:Retroperitoneal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000628:therapy