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21:45
Description:
The patient is a 66 year old male referred for evaluation of
dysphagia. His medical history is notable for obesity and longstanding
gastroesophageal reflux disease. He had undergone laparoscopic Roux en Y
gastric bypass and Nissen fundoplication 5 years prior.
Endoscopy demonstrated an adenocarcinoma at the gastroesophageal
junction, staged as a T3 lesion by radial echoendosonography. The
hypoechoic tumor can be seen extending through the muscularis propria
layer of the esophagus.
Despite treatment with chemotherapy and radiation, the patient
experienced progressive disease, and several months later an esophageal
stent placement was requested for palliation of dysphagia.
Repeat endoscopy demonstrates an obstructing tumor in the distal
esophagus. An ultraslim endoscope was selected for this examination,
and this was used to gently dissect alongside the tumor through the
narrow, residual esophageal lumen. Distal to the obstruction, the
patient's anatomy was consistent with prior gastric bypass. The
gastrojejunal anastomosis is visualized, and is measured at 5 cm beyond
the distal extent of tumor.
A Savary guidewire is advanced through the working channel of the scope
and positioned distal to the obstruction. The scope is then slowly
withdrawn, leaving the wire in place. Here, the region of tumor is
visualized during withdrawal.
A partially covered metal stent, 10 cm in length, was selected in this
case. The stent delivery system is advanced over the wire and across
the region of tumor under fluoroscopic visualization. Paper clips have
been taped to the patient's skin to externally mark the proximal and
distal stent margins.
The esophagus is reintubated with the ultraslim endoscope, which is
positioned alongside the stent delivery catheter for direct
visualization of stent deployment. During slow deployment, fluoroscopic
monitoring confirms appropriate continued position of the semi-deployed
stent.
Following stent deployment and removal of the delivery catheter and
guidewire, the stent is gently traversed with the ultraslim endoscope.
This demonstrates luminal patency, as well as appropriate position
across the region of obstruction and proximal to the gastrojejunal
anastomosis. Final fluoroscopy demonstrates a waist in the midportion
of the stent.
This case demonstrates placement of a palliative permanent esophageal
stent following Roux en Y gastric bypass. The post-operative anatomy
was clearly defined in order to guide stent position, and to select a
stent length which minimized distal overlap. There has been speculation
that diversion of gastric acid contents will over the long term
decrease the incidence of esophageal adenocarcinoma in patients with
GERD who undergo gastric bypass. As this case demonstrates, patients
with long-standing pre-operative GERD may not be immune to long-term
complications of acid reflux, even following successful bypass surgery.
Contributed By:
Patrick Yachimski, MD, Vanderbilt University Medical Center
Final result with esophageal stent in place with a waist noted at the area of maximal stenosis.
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