Medical Surgical Nursing

(Tina Sui) #1
 Other surgical procedures may be performed for different degrees and types of
disease, ranging from revision of the sphincter of the ampulla of Vater, to
internal drainage of a pancreatic cyst into the stomach, to insertion of a stent,
to wide resection or removal of the pancreas. A Whipple resection
(pancreaticoduodenectomy) has been carried out to relieve the pain of chronic
pancreatitis.

 Autotransplantation or implantation of the patient‘s pancreatic islet cells has
been attempted to preserve the endocrine function of the pancreas in patients
who have undergone total pancreatectomy.

Pancreatic Cysts


 As a result of the local necrosis that occurs at the time of acute pancreatitis,
collections of fluid may form in the vicinity of the pancreas. These become
walled off by fibrous tissue and are calledpancreatic pseudocysts. They are the
most common type of pancreatic cysts. Less common cysts occur as a result of
congenital anomalies or are secondary to chronic pancreatitis or trauma to the
pancreas.

 Diagnosis of pancreatic cysts and pseudocysts is made by ultrasound,
computed tomography, and ERCP. ERCP may be used to define the anatomy
of the pancreas and evaluate the patency of pancreatic drainage. Pancreatic
pseudocysts may be of considerable size. Because of their location behind the
posterior peritoneum, when they enlarge they impinge on and displace the
stomach or the colon, which are adjacent. Eventually, through pressure or
secondary infection, they produce symptoms and require drainage

Cancer of the Pancreas


 The incidence of pancreatic cancer has decreased slightly over the past 25
years in non-Caucasian men. It is the fifth leading cause of cancer deaths in
the United States and occurs most frequently in the fifth to seventh decades of
life. Cigarette smoking, exposure to industrial chemicals or toxins in the
environment, and a diet high in fat, meat, or both are associated with
pancreatic cancer, although their role is not completely clear. The risk for
pancreatic cancer increases as the extent of cigarette smoking increases.
Diabetes mellitus, chronic pancreatitis, and hereditary pancreatitis are also
associated

 Cancer may arise in any portion of the pancreas (in the head, the body, or the
tail); clinical manifestations vary depending on the location of the lesion and
whether functioning, insulinsecreting pancreatic islet cells are involved.
Approximately 75% of pancreatic cancers originate in the head of the pancreas
and give rise to a distinctive clinical picture. Functioning islet cell tumors,
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