|Year : 2013 | Volume
| Issue : 3 | Page : 93-96
Cystic lesion of pancreas - Intraductal papillary mucinous neoplasm
Rajiv Baijal, HR Praveen Kumar, Deepakkumar T Gupta, Nimish Shah, D Amarapurkar, Parijat Gupte
Department of Gastroenterology, Jagjivanram Hospital, Mumbai, Maharashtra, India
|Date of Web Publication||2-Apr-2014|
Deepakkumar T Gupta
Jagjivanram Hospital Doctors Hostel D-71, Room No. 102, Mumbai Central, Mumbai, Maharashtra
Source of Support: None, Conflict of Interest: None
Intraductal papillary mucinous neoplasm (IPMN) of the pancreas is an intraductal mucin-producing epithelial neoplasm that arises from the main and/or branched pancreatic duct. It usually presents as cystic lesion of pancreas. There are well known differential diagnosis of cystic pancreatic lesion. Pancreatic cystic neoplasms are detected at an increasing frequency due to an increased use of abdominal imaging. The diagnosis and treatment of intraductal papillary mucinous tumors (IPMN) of the pancreas has evolved over the past decade. IPMN represents a spectrum of disease, ranging from benign to malignant lesions, making the early detection and characterization of these lesions important. Definitive management is surgical resection for appropriate candidates, as benign lesions harbor malignant potential. IPMN has a prognosis, which is different from adenocarcinoma of the pancreas. We report a case of a 58-year-old male with intraductal papillary neoplasm involving main duct and side branches presenting to us with clinical symptoms of chronic pancreatitis with obstructive jaundice and cholangitis treated surgically.
Keywords: IPMN, mucinous cystadenocarcinoma, pancreatic cystic neoplasm, pseudocyst, serous cystadenoma
|How to cite this article:|
Baijal R, Praveen Kumar H R, Gupta DT, Shah N, Amarapurkar D, Gupte P. Cystic lesion of pancreas - Intraductal papillary mucinous neoplasm. J Dig Endosc 2013;4:93-6
|How to cite this URL:|
Baijal R, Praveen Kumar H R, Gupta DT, Shah N, Amarapurkar D, Gupte P. Cystic lesion of pancreas - Intraductal papillary mucinous neoplasm. J Dig Endosc [serial online] 2013 [cited 2019 Jan 19];4:93-6. Available from: http://www.jdeonline.in/text.asp?2013/4/3/93/129987
| Introduction|| |
Intraductal papillary mucinous neoplasm (IPMN) is a rare pancreatic cystic neoplasm accounting for 5% of all pancreatic neoplasm. It presents as a cystic lesion of pancreas and is increasingly being diagnosed with the advent of recent advances in imaging even in asymptomatic patients. It has to be differentiated from pseudocyst of pancreas for which treatment is entirely different. We report a case of intraductal papillary neoplasm who presented to us with clinical symptoms of chronic pancreatitis with obstructive jaundice and cholangitis.
| Case Report|| |
A 58-year-old male nonalcoholic, normotensive patient with history of type 2 diabetes mellitus since 4 years presented to us with complaints of intermittent epigastric pain radiating to back since 2 years, with worsening of pain since past 3 months associated with occasional nonbilious vomiting and jaundice. The jaundice has been progressively increasing and was not associated with itching or pale stools. He noticed a significant weight loss of 18 kg in the past 2 years associated with decrease in appetite due to sitophobia. Patient also had intermittent high grade fever associated with chills for which he was treated with antibiotics by the local practitioner. Investigations done at another hospital showed Hb 11.2 g%; WBC, 16700; platelets 170000; PT INR 1.24; total serum bilirubin 12.5 mg% with direct bilirubin of 8.2 mg%; serum alkaline phosphatase 463 IU/L; serum SGOT/SGPT 68/62 IU/L; and serum total protein 6.3g% with serum albumin of 2.8 g%. Ultrasonography abdomen showed dilated common bile duct (CBD) in its entire course with multiple cystic lesion in body and head region, largest measuring 8 cm in diameter containing debris with dilated pancreatic duct in the tail region suggestive of multiple pseudocysts of pancreas with chronic pancreatitis with suspicion of stricture in distal CBD.
Patient underwent further evaluation at our centre and a computed tomography (CT) scan was done that showed a mass of 7.6 × 4.8 cm in the head and body with predominantly cystic component with solid component and debris within the mass; the tail of the pancreas appeared atrophic with rest of the pancreatic parenchyma replaced by the mass and dilated CBD possibly due to compression by the mass with intrahepatic biliary radicles dilated and mildly enlarged liver [Figure 1]. Tumor markers revealed CA19-9 of 1020 U/ml, carcino-emryonic antigen (CEA) of 38 ng/ml and alpha fetoprotein of 10 ng/ml. In view of the mass, endoscopic ultrasonography (EUS) was performed, which showed multiple cystic lesions with thick fluid interspersed with solid component. EUS-guided fine needle aspiration cytology (FNAC) and cystic fluid aspiration [Figure 2] were done, which were negative for malignant cells but positive for mucin and elevated CA19-9 and CEA level. In view of cholangitis, the patient was treated with antibiotics and underwent endoscopic retrograde cholangiopancreatography (ERCP). At ERCP, a thick, viscous whitish mucin-like fluid was seen coming out of the protruding papilla [Figure 3], however, CBD could not be cannulated and patient underwent percutaneous transhepatic biliary drainage (PTBD) in the right hepatic duct to treat cholangitis [Figure 4].
Patient underwent MRCP for defining the ductal anatomy of pancreas, which showed it to be a main duct IPMN with side branches involvement and eroding the right hepatic duct [Figure 5]. Patient's symptoms improved with drainage procedure and became afebrile with a drop in bilirubin. After taking care of his nutritional status, he underwent near total pancreactectomy [Figure 6] and [Figure 7].
| Discussion|| |
Cystic lesions of the pancreas include pseudocysts, congenital cysts, and cystic neoplasms. The major histologic subtypes of cystic neoplasm include (a) serous cystic neoplasm (SCN), (b) mucinous cystic neoplasm (MCN), (c) IPMN, and (d) solid pseudopapillary neoplasms (SSPN). 
IPMN - first reported by Ohashi,  accounts for 5% of pancreatic neoplasm. ,,,, Based on the pattern of involvement of pancreatic duct, IPMN can be classified as main duct-IPMN, branched duct-IPMN and mix-IPMN with frequencies of main duct - IPMN in 57-97% cases, and branched duct - IPMN in 6-46%. The mix type has 35-40% malignant potential in surgically resected specimen. ,, It is necessary to differentiate cystic neoplasm from pseudocyst of pancreas. Diagnosis of IPMN is usually done by imaging such as multidetector CT scan and MRCP. EUS with fine needle aspiration along with cystic fluid for analysis for viscosity and tumor markers can be used for confirming the diagnosis.[Table 1] Aspiration cytology of cystic fluid showed thick mucin in IPMN ,, and branching papillae and a myxoid stroma in SSPN  Treatment of IPMN is mainly resection except for branch duct - IPMN, which is less than 3 cm and does not show any malignant features.
| Acknowledgment|| |
The authors acknowledge the assistance of Dr. P.J. Halder, HOD Department of GI Surgery and Dr. I Bhattacharya, HOD Department of Pathology.
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[Figure 1], [Figure 2], [Figure 3], [Figure 4], [Figure 5], [Figure 6], [Figure 7]