A case of solid-pseudopapillary neoplasm, focusing on contrast-enhanced endoscopic ultrasonography.
We used contrast-enhanced endoscopic ultrasonography (CE-EUS) to diagnose a case of solid-pseudopapillary neoplasm (SPN) in an adult man. A 58-year-old man was referred to our hospital because of a pancreatic mass found by positron emission tomography (PET) using (18)F-fluorodeoxyglucose (FDG) during a medical checkup in 2009. Trans-abdominal ultrasonography revealed a 24-mm hypoechoic mass at the pancreatic tail with calcification inside. Multiphasic computed tomography (CT) showed a solid mass with delayed enhancement. EUS revealed a hypoechoic mass without lateral shadowing, and neither a septum nor cystic component was detected. CE-EUS using Sonazoid(®) showed a hypovascular mass compared with the surrounding pancreatic parenchyma, and the inside of the mass was enhanced like an alveolus nest, suggesting pseudopapillary change. Diagnosis of a solid-pseudopapillary neoplasm and a concomitant small neuroendocrine tumor was made by distal pancreatectomy.
Department of Gastroenterology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
Takuya
T
Ishikawa
Department of Gastroenterology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
Akihiro
A
Itoh
Department of Gastroenterology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
Hiroki
H
Kawashima
Department of Gastroenterology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
Eizaburo
E
Ohno
Department of Gastroenterology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
Hiroshi
H
Matsubara
Department of Gastroenterology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
Masanao
M
Nakamura
Department of Endoscopy, Nagoya University Hospital, 65 Tsuruma, Showa, Nagoya, 466-8550, Japan.
Ryoji
R
Miyahara
Department of Gastroenterology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
Naoki
N
Ohmiya
Department of Gastroenterology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
Hidemi
H
Goto
Department of Endoscopy, Nagoya University Hospital, 65 Tsuruma, Showa, Nagoya, 466-8550, Japan. hirooka@med.nagoya-u.ac.jp.
Yoshiki
Y
Hirooka
Contrast-enhanced endoscopic ultrasonography; Neuroendocrine tumor; Solid-pseudopapillary neoplasm; Sonazoid