Liver abscesses are usually drained percutaneously and if drainage is inadequate,
surgery may be necessary [1]. Successful endoscopic ultrasound (EUS)-guided drainage has been described for abscesses
located in the pancreas, pelvis, liver, and subphrenic space [2]
[3]
[4]. We report the first case of EUS-guided drainage of an abscess in the left lobe
of liver in a patient with pancreatic tumor, using a self-expanding metallic stent
(SEMS).
A 73-year-old woman was admitted with abdominal pain and fever. Abdominal computed
tomography (CT) showed a hypodense mass in the pancreas, measuring 9.7 × 9.3 cm ([Fig. 1]). After the patient had given informed consent, we carried out pancreatic fine needle
puncture with EUS-guided drainage of the liver abscess ([Fig. 2]). The liver abscess was visualized using a therapeutic linear EUS device (GF-UCT160;
Olympus, Tokyo, Japan) and punctured with a 19-gauge needle (EUSN-19-T; Cook Endoscopy,
Winston-Salem, North Carolina, USA) via a transgastric approach. A 480-cm long, 0.035-inch
guide wire was inserted and the puncture needle was withdrawn. A cystotome (Boston
Scientific, Natick, Massachusetts, USA) was inserted over the guide wire to traverse
the gastric wall. The cystotome was then withdrawn, leaving the guide wire within
the abscess cavity. Transgastric drainage was carried out using a 60 × 10 mm, partially
covered SEMS (Boston Scientific, Natick, Massachusetts, USA) over the guide wire ([Fig. 3]). There were no complications. At 2 weeks after the procedure, EUS revealed a reduction
in the size of the liver abscess and intra-abscess stent migration ([Fig. 4]). A guide wire was inserted in the puncture site using a catheter (MicroKnife XL,
Boston Scientific, Natick, Massachusetts, USA) to cannulate the SEMS ([Fig. 5]). Stent cannulation was confirmed using radiography and EUS. The catheter was withdrawn
and a 10-Fr double pigtail plastic stent was inserted inside the SEMS to preserve
the drainage channel ([Fig. 6]). The patient was prescribed antibiotics and after 2 weeks, CT showed a reduction
of the collection. The liver abscess resolved completely by 8 weeks and histological
examination of the pancreatic lesion revealed pancreatic stromal tumor. The patient
had an uneventful follow-up.
Fig. 1 Computer tomography (CT) scan showing a giant liver abscess in a 73-year-old woman
with abdominal pain and fever.
Fig. 2 Endoscopic ultrasound (EUS)-guided puncture of the liver abscess. FNA, fine needle
aspiration.
Fig. 3 Endoscopic view of the self-expandable metallic stent (SEMS).
Fig. 4 Endoscopic view of the conduit without the SEMS (migrated).
Fig. 5 Recannulation attempt to recover the migrated stent.
Fig. 6 Computer tomography (CT) view of the double pigtail within the self-expandable metallic
stent (SEMS), associated with resolution of the liver abscess.
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