General Information About Pancreatic Cancer

Incidence and Mortality
Related Summary

Estimated new cases and deaths from pancreatic cancer in the United States in 2012:[1]

• New cases: 43,920.
• Deaths: 37,390.

Carcinoma of the pancreas has had a markedly increased incidence during the past several decades and ranks as the fourth leading cause of cancer death in the United States. Despite the high mortality rate associated with pancreatic cancer, its etiology is poorly understood.[2] Cancer of the exocrine pancreas is rarely curable and has an overall survival (OS) rate of less than 4%.[3] The highest cure rate occurs if the tumor is truly localized to the pancreas; however, this stage of the disease accounts for fewer than 20% of cases. For those patients with localized disease and small cancers (<2 cm) with no lymph node metastases and no extension beyond the capsule of the pancreas, complete surgical resection can yield actuarial 5-year survival rates of 18% to 24%.[4][Level of evidence: 3iA] Improvements in imaging technology, including spiral computed tomographic scans, magnetic resonance imaging scans, positron emission tomographic scans, endoscopic ultrasound examination, and laparoscopic staging can aid in the diagnosis and the identification of patients with disease that is not amenable to resection.[5] In a case series of 228 patients, positive peritoneal cytology had a positive predictive value of 94%, specificity of 98%, and sensitivity of 25% for determining unresectability.[6] For patients with advanced cancers, the OS rate of all stages is less than 1% at 5 years with most patients dying within 1 year.[7-10]

No tumor-specific markers exist for pancreatic cancer; markers such as serum CA 19-9 have low specificity. Most patients with pancreatic cancer will have an elevated CA 19-9 at diagnosis. Following or during definitive therapy, the increase of CA 19-9 levels may identify patients with progressive tumor growth.[11][Level of evidence: 3iDiii] The presence of a normal CA 19-9, however, does not preclude recurrence.

Patients with any stage of pancreatic cancer can appropriately be considered candidates for clinical trials because of the poor response to chemotherapy, radiation therapy, and surgery as conventionally used. Palliation of symptoms, however, may be achieved with conventional treatment. Symptoms caused by pancreatic cancer may depend on the site of the tumor within the pancreas and the degree of involvement. Palliative surgical or radiologic biliary decompression, relief of gastric outlet obstruction, and pain control may improve the quality of life while not affecting OS.[12,13] Palliative efforts may also be directed to the potentially disabling psychological events associated with the diagnosis and treatment of pancreatic cancer.[14] (Refer to the PDQ summary on Pain for more information.)

Information about ongoing clinical trials is available from the NCI Web site.

Another PDQ summary containing information related to pancreatic cancer includes:

• Unusual Cancers of Childhood (pancreatic cancer in children)

References

1. American Cancer Society.: Cancer Facts and Figures 2012. Atlanta, Ga: American Cancer Society, 2012. Available online. Last accessed September 24, 2012. 
   
   
2. Silverman DT, Schiffman M, Everhart J, et al.: Diabetes mellitus, other medical conditions and familial history of cancer as risk factors for pancreatic cancer. Br J Cancer 80 (11): 1830-7, 1999.  [PUBMED Abstract]
   
   
3. Greenlee RT, Murray T, Bolden S, et al.: Cancer statistics, 2000. CA Cancer J Clin 50 (1): 7-33, 2000 Jan-Feb.  [PUBMED Abstract]
   
   
4. Yeo CJ, Abrams RA, Grochow LB, et al.: Pancreaticoduodenectomy for pancreatic adenocarcinoma: postoperative adjuvant chemoradiation improves survival. A prospective, single-institution experience. Ann Surg 225 (5): 621-33; discussion 633-6, 1997.  [PUBMED Abstract]
   
   
5. Riker A, Libutti SK, Bartlett DL: Advances in the early detection, diagnosis, and staging of pancreatic cancer. Surg Oncol 6 (3): 157-69, 1997.  [PUBMED Abstract]
   
   
6. Merchant NB, Conlon KC, Saigo P, et al.: Positive peritoneal cytology predicts unresectability of pancreatic adenocarcinoma. J Am Coll Surg 188 (4): 421-6, 1999.  [PUBMED Abstract]
   
   
7. Lillemoe KD: Current management of pancreatic carcinoma. Ann Surg 221 (2): 133-48, 1995.  [PUBMED Abstract]
   
   
8. Yeo CJ: Pancreatic cancer: 1998 update. J Am Coll Surg 187 (4): 429-42, 1998.  [PUBMED Abstract]
   
   
9. Nitecki SS, Sarr MG, Colby TV, et al.: Long-term survival after resection for ductal adenocarcinoma of the pancreas. Is it really improving? Ann Surg 221 (1): 59-66, 1995.  [PUBMED Abstract]
   
   
10. Conlon KC, Klimstra DS, Brennan MF: Long-term survival after curative resection for pancreatic ductal adenocarcinoma. Clinicopathologic analysis of 5-year survivors. Ann Surg 223 (3): 273-9, 1996.  [PUBMED Abstract]
    
    
11. Willett CG, Daly WJ, Warshaw AL: CA 19-9 is an index of response to neoadjunctive chemoradiation therapy in pancreatic cancer. Am J Surg 172 (4): 350-2, 1996.  [PUBMED Abstract]
    
    
12. Sohn TA, Lillemoe KD, Cameron JL, et al.: Surgical palliation of unresectable periampullary adenocarcinoma in the 1990s. J Am Coll Surg 188 (6): 658-66; discussion 666-9, 1999.  [PUBMED Abstract]
    
    
13. Baron TH: Expandable metal stents for the treatment of cancerous obstruction of the gastrointestinal tract. N Engl J Med 344 (22): 1681-7, 2001.  [PUBMED Abstract]
    
    
14. Passik SD, Breitbart WS: Depression in patients with pancreatic carcinoma. Diagnostic and treatment issues. Cancer 78 (3 Suppl): 615-26, 1996.  [PUBMED Abstract]