GET THE APP
Received date: May 14, 2015; Accepted date: May 15, 2015; Published date: May 21, 2015
Citation: Minaga K, Yamashita Y, Uenoyama Y (2015) Lipoma of the Pancreas Diagnosed by EUS-FNA. J Gastrointest Dig Syst 5:i105. doi: 10.4172/2161-069X.1000i105
Copyright: © 2015 Minaga K, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Visit for more related articles at Journal of Gastrointestinal & Digestive System
Lipoma of the pancreas; Endoscopic ultrasound-guided fine-needle aspiration; Pancreatic mesenchymal tumor
Pancreatic mesenchymal tumors are infrequent and account for approximately 1-2 % of all pancreatic tumors . Lipoma of the pancreas is a particularly rare condition, and only 50 cases have been described since the first case report by Bigard et al. in 1989 . Recently, endoscopic ultrasound-guided fine-needle aspiration (EUSFNA) has gained wide acceptance as a safe and well established examination technique for the diagnosis of pancreatic masses. However, only three cases of pancreatic lipoma diagnosed by EUSFNA have been described to date in the literature [3-5]. Herein, we report a case of pancreatic tail lipoma diagnosed by EUS-FNA. A 72- year-old man with an incidental pancreatic mass that was detected by computed tomography (CT) was referred to our hospital.
The CT scan demonstrated a well-bordered, homogenous mass of fatty density with no contrast enhancement at the pancreatic tail (Figure 1a). On magnetic resonance imaging, the lesion had highintensity signals on both T1-weighted and T2-weighted axial sequences. Subsequently, EUS was performed to clarify the etiology of the mass using a curved linear array echoendoscope (GF-UCT260; Olympus, Tokyo, Japan). EUS revealed a 25 × 14-mm hypoechoic mass with hyperechoic strands within, and the mass was surrounded by pancreatic parenchyma (Figure 1b).
To exclude malignant tumors such as liposarcoma and lipoblastoma, we performed EUS-FNA by a transgastric approach using a 22-G needle (Expect; Boston Scientific Corporation, Natick, MA, USA). Two passes were made with suction with no postprocedural complications.
Microscopic examination of the EUS-FNA material showed mature adipose cells characterized by a large fat droplet with no atypia, and no malignant cells were identified (Figure 2a and 2b). Thus, we confirmed the diagnosis of a pancreatic lipoma. The patient was conservatively followed up without surgical resection. Follow-up CT, conducted 1 year later, showed no apparent change in size or characteristics of the lesion.
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals