Gastrointest Interv 2013; 2:65–67

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Gastrointestinal Intervention

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Case Report Transduodenal drainage of a malignant ovarian pseudocyst for palliation of gastroduodenal and biliary obstruction (with video)

Ryan Law, Michael D. Leise, Todd H. Baron* abstract

Transmural drainage of intraabdominal fluid collections can be successfully performed utilizing a variety of endoscopic techniques. Here we present a case of metastatic ovarian forming a fluid-filled cystic (pseudocyst) lesion that caused gastroduodenal and biliary obstruction and which resolved following transduodenal endoscopic drainage. A self-expandable nitinol stent, anchored by a double-pigtail plastic stent, was placed into the malignant pseudocyst cavity after transmural puncture. Following the successful procedure, the patient had rapid relief of her obstructive symptoms. Repeat cross- sectional imaging demonstrated near-complete decompression of the cavity. Endoscopic transenteric drainage should be considered in patients with any type of fluid collections, abscesses, or hematomas in close apposition to the . Copyright Ó 2013, Society of Gastrointestinal Intervention. Published by Elsevier. All rights reserved.

Keywords: Malignant gastroduodenal obstruction, Metastatic ovarian cancer, Pseudocyst

Introduction intrahepatic placement of two plastic biliary stents. Her liver chemistry improved dramatically and all stents were subsequently Transmural drainage of pancreatic and nonpancreatic fluid col- removed prior to initiation of her most recent – lections is well described in the current literature.1 4 These pro- regimen. Several weeks after biliary decompression she developed cedures can be performed with or without the aforementioned symptoms of early satiety and with (EUS) guidance. Here we report a successful transduodenal . An abdominal and pelvic computed tomography (CT) drainage procedure to relieve gastroduodenal and biliary obstruc- scan showed marked gastric dilatation with retention of fluid and tion caused by a cystic lesion associated with metastatic ovarian oral contrast consistent with gastric outlet obstruction (Fig. 1). A adenocarcinoma. large, cystic structure with an internal density of 15 Hounsfield units (water density ¼ 0–20 Hounsfield units) was observed com- Case report pressing the duodenum and extrahepatic biliary tree. Additionally, her liver function tests were notable for elevated levels of alkaline A 71-year-old woman with previous diagnosis of metastatic phosphatase (506 UI/L) and aspartate transaminase (62 IU/L). ovarian cancer presented for evaluation of recent onset early A decision was made to proceed with endoscopic palliative satiety, nausea, and vomiting after meals. transduodenal drainage of the cystic mass. Under general anesthesia Five years prior to presentation she was diagnosed with and with the patient in the supine position, a therapeutic-channel advanced-stage ovarian cancer (papillary serous adenocarcinoma). video-duodenoscope (TJF-160VF; Olympus America, Center Valley, > fl Treatment consisted of neoadjuvant chemotherapy followed by PA, USA) was passed into the where 1Lof uid and surgical debulking (total abdominal hysterectomy, bilateral retained solid material were encountered. Entry into the duodenum salpingo-oophorectomy, resection of the sigmoid colon, omentec- was met with obvious extrinsic compression along the posterior ’ tomy, resection right hemidiaphragm). Since that time, she has wall of the duodenal bulb, consistent with the patient s cystic lesion been treated with multiple chemotherapeutic regimens and has seen on cross-sectional imaging. Using a sclerotherapy needle undergone additional debulking . More recently, she (Marcon-Haber; Cook Endoscopy, Winston-Salem, NC, USA), the fl fl developed biliary obstruction secondary to a hilar lesion requiring cyst was punctured with obvious out ow of cystic uid. A 0.46-mm,

Division of Gastroenterology & Hepatology, Mayo Clinic, Rochester, MN, USA Received 30 October 2012; Revised 29 January 2013; Accepted 13 February 2013 * Corresponding author. 200 First Street South-West, Rochester, MN 55905, USA. E-mail address: [email protected] (T.H. Baron).

2213-1795/$ – see front matter Copyright Ó 2013, Society of Gastrointestinal Intervention. Published by Elsevier. All rights reserved. http://dx.doi.org/10.1016/j.gii.2013.02.001 66 Gastrointestinal Intervention 2013 2(1), 65–67

Fig. 3. Abdominopelvic computed tomography (CT) scan showing decompression of the cystic lesion and resolution of the gastroduodenal outlet obstruction. Fig. 1. Abdominopelvic computed tomography (CT) scan demonstrating a large (10 cm 8cm 6 cm) cystic lesion causing gastroduodenal outlet obstruction. resolution of the gastroduodenal and biliary obstruction. Repeat angled-tip guidewire (Roadrunner; Cook Endoscopy), was passed liver function tests noted alkaline phosphatase at 246 IU/L, aspar- through the needle and coiled within the cystic cavity. The needle tate transaminase 22 UI/L, alanine transaminase 17 IU/L, and total was withdrawn, leaving the wire in place. A standard 5F triple bilirubin 4.0 mg/L. lumen biliary catheter was passed over the wire into the collection. The guidewire was removed, and 20–30 mL of nonturbid, amber- Discussion colored fluid was aspirated and sent for cytologic analysis. The guidewire was replaced with a standard 0.9-mm wire and an 8-mm To our knowledge, this represents the first case of transmural internal diameter by 4-cm, fully-covered self-expandable nitinol endoscopic drainage for gastroduodenal obstruction secondary to stent (Viabil; W.L. Gore Flagstaff, AZ, USA) was deployed (Fig. 2) with metastatic ovarian cancer. To date, very few case reports have been excellent drainage of mucinous material. A 10F double-pigtail stent published describing endoscopic transmural drainage for palliation was placed inside the existing nitinol stent to anchor the position of a malignant cystic lesion.6,7 and prevent migration.5 Gastroduodenal obstruction is a rare occurring in The patient was discharged from our outpatient endoscopy unit 2.5% of women with ovarian cancer.8 In the 11 cases within this and no immediate or delayed procedural adverse events were cohort, 50% had compression at the level of the gastric body with the encountered. The cytology from the aspirated cystic fluid showed remaining 50% at the gastric outlet or in the duodenum. Encysted adenocarcinoma of the serous type. Following the procedure, she malignant ascites within the lesser sac occurred in w30%, similar to was able to tolerate peroral intake immediately. Follow-up CT the presentation of our patient. Historically, surgical intervention (Fig. 3) demonstrated good decompression of the cyst with and interventional radiologic approaches have remained standard therapy for loculated malignant ascites related to ovarian cancer.8,9 CT- and ultrasound-guided approaches are successful without the morbidity associated with surgical intervention. Transmural endo- scopic drainage, as described in this case, appears to be successful for symptom palliation with minimal morbidity. Transmural drainage is widely accepted and remains the stan- dard of care for management of pancreatic pseudocysts.1,10 This technique can be performed with or without EUS guidance, via either a transgastric or transduodenal approach, and can be extrapolated to a variety of cystic lesions that are in apposition to the stomach or duodenum. Transesophageal and transcolonic drainage of intra-abdominal fluid collection or abscesses has also been re- ported.11 A small, prospective case series by Piraka et al demon- strated successful endoscopic drainage in 100% of patients with complete symptom relief in 89%. Indications for EUS-guided drainage in this study included pseudocysts, intra-abdominal ab- scesses (i.e., Crohn’s related, diverticular), postoperative hematoma, and biloma. Given the current armamentarium of therapeutic drainage options, most intra-abdominal fluid collections, hema- tomas, or abscesses will be drainable via an endoscopic approach. A potential alternative approach in this case could have been ethanol ablation. Ethanol ablation of pancreatic cystic lesions has been previously reported and has demonstrated short- and long- term efficacy with an acceptable safety profile.12,13 Mucinous cystic Fig. 2. Endoscopic image demonstrating mucin drainage following placement of a self- and intraductal papillary mucinous neoplasms are the expandable metal stent. majority of lesions treated, although three patients with pancreatic Ryan Law et al. / Malignant pseudocyst drainage 67 pseudocysts also underwent ethanol ablation. The malignant pseu- 3. Zielinski MD, Cima RR, Baron TH. Endoscopic transgastric drainage of a post- docyst in our patient was much larger (10 cm 8cm 6 cm) than the operative intra-abdominal abscess after colon surgery. Gastrointest Endosc. 2010;71:880–2. lesions previously treated by DeWitt et al, which ranged in size from 4. Lee JY, Chung JS, Kim TH. Successful endoscopic decompression for intramural 1.0 cm to 5.8 cm in largest diameter.12,13 Prior studies have demon- duodenal hematoma with gastric outlet obstruction complicating acute – strated successful ethanol ablation of large benign hepatic up to . Clin Endosc. 2012;45:202 4. 5. Park JK, Moon JH, Choi HJ, Min SK, Lee TH, Cheon GJ, et al. Anchoring of a fully 23 cm in the largest diameter, suggesting that this approach was covered self-expandable metal stent with a 5F double-pigtail plastic stent to 14,15 feasible in our patient. Studies of ethanol injection into metastatic prevent migration in the management of benign biliary strictures. Am J Gas- cystic lesions have not been previously reported, but this technique troenterol. 2011;106:1761–5. fi 6. Coelho-Prabhu N, Levy MJ, Baron TH. Successful transgastric drainage of a large may be of some palliative bene t in patients with limited life mucinous adenocarcinoma of the stomach for palliation of malignant gastric expectancy. luminal obstruction. Gastrointest Endosc. 2009;69:e23–5. 7. Silva Jr RG, Silverman WB, Gerke H. Palliative endoscopic ultrasound-guided drainage of a malignant pancreatic cyst causing gastric outlet obstruction. Conflict of interest Pancreatology. 2006;6:472–6. 8. Spencer JA, Crosse BA, Mannion RA, Sen KK, Perren TJ, Chapman AH. Gastro- None of the authors have any conflicts of interest relevant to this duodenal obstruction from ovarian cancer: imaging features and clinical outcome. Clin Radiol. 2000;55:264–72. research. 9. Mann WJ, Calayag PT, Muffoletto JP, Ross F, Chalas E, Deitch J. Management of gastric outlet obstruction caused by ovarian cancer. Gynecol Oncol. 1991;40: 277–9. Appendix A. Supplementary material 10. Vitale GC, Lawhon JC, Larson GM, Harrell DJ, Reed Jr DN, MacLeod S. Endoscopic drainage of the . Surgery. 1999;126:616–23. Supplementary video related to this article can be found online 11. Piraka C, Shah RJ, Fukami N, Chathadi KV, Chen YK. EUS-guided trans- esophageal, transgastric, and transcolonic drainage of intra-abdominal fluid at http://dx.doi.org/10.1016/j.gii.2013.02.001. collections and abscesses. Gastrointest Endosc. 2009;70:786–92. 12. DeWitt J, DiMaio CJ, Brugge WR. Long-term follow-up of pancreatic cysts that resolve radiologically after EUS-guided ethanol ablation. Gastrointest Endosc. References 2010;72:862–6. 13. DeWitt J, McGreevy K, Schmidt CM, Brugge WR. EUS-guided ethanol versus 1. Chahal P, Papachristou GI, Baron TH. Endoscopic transmural entry into saline solution lavage for pancreatic cysts: a randomized, double-blind study. pancreatic fluid collections using a dedicated aspiration needle without Gastrointest Endosc. 2009;70:710–23. endoscopic ultrasound guidance: success and complication rates. Surg Endosc. 14. 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