Pancreatic carcinoma remains a devastating disease. Pancreatic cancer is the twelfth most common cancer in the world; it is the seventh most common cause of death from cancer. Treatment of this disease remains a major challenge (1-2). The long-term outcome of pancreatic cancer is extremely poor, the overall median survival from diagnosis being 3 - 6 months without treatment, which increases to around 23 months with resectional surgery and adjuvant treatment. Pancreatic cancer is characterized by resistance to all cancer treatment modalities and early metastasis. Surgical resection remains the mainstay of treatment for pancreatic cancer. Curative surgery is rare. Although it improves the otherwise poor prognosis, it is essentially palliative …show more content…
Although it provides excellent anatomic detail, it may not depict small tumors. Abdominal CT is conducted every 3 to 6 months for postoperative monitoring. It is sometimes difficult to detect local or peritoneal recurrences because of postoperative changes in the anatomical positions of organs (4). Positron emission tomography (PET) is a functional imaging modality that has shown promise in tumor depiction, but it is unable to provide detailed high spatial resolution images (5-7). Fused PET/CT is a recently developed technology that couples the functional information of PET with the anatomic details of CT (8). FDG PET imaging is useful for preoperative diagnosis of pancreatic carcinoma in patients with suspected pancreatic cancer in whom CT fails to identify a discrete tumor mass or in whom FNAs are non diagnostic. FDG PET imaging is useful for M staging and restaging by detecting CT occult metastatic disease, allowing non curative resection to be avoided. FDG PET can differentiate post-therapy changes from recurrence and holds promise for monitoring neoadjuvant chemoradiation therapy.
2. PATIENTS AND METHODS
2.1
According to Professor John Neoptolemos, "There are approximately 7,000 new cases each year - but it is one of the most lethal cancers." The main reason for the low survival rate from pancreatic cancer is due to its difficulty in finding this cancer early. By the time a person has symptoms, the cancer has often reached a large size and spread to other organs. Because the pancreas is deep inside the body, the doctor cannot see or feel tumors during a routine physical exam. There are currently no blood tests or other tests that can easily find this cancer early in people without symptoms. Tests for certain genes in people with a family history of the disease can help tell if they are at higher risk for cancer. There are some new tests for finding pancreatic cancer early in people with a strong family history of the disease, but these tests are complicated and expensive. Some symptoms of pancreatic cancer include jaundice, a yellow color of the eyes and skin caused by a substance buildup in the liver, pain in the belly area or in the middle of the back, significant weight loss over a number of months, loss of appetite, digestive problems including nausea, vomiting, pain that tends to be worse after eating, a swollen gallbladder that is enlarged, blood clots that form in the veins or cause problems with fatty tissue under the skin, and diabetes. If the doctor has any reason to suspect pancreatic cancer, certain tests will be done to see if the disease is really
The photons are then tracked by a tomographic scintillation counter, and the information is processed by a computer to provide both image and data on blood flow and metabolic processes within bodily tissues. PET scans are particularly useful for diagnosing brain tumor and the effects of strokes on the brain, along with various mental illnesses. They are also used in brain research and in mapping of brain functions.
Positron Emission Tomography is a scanning technique that allows us to measure in detail the functioning of distinct areas of the human brain while the patient is comfortable, conscious and alert. PET represents a type of functional imaging, unlike X-rays or CT scans, which show only structural details within the brain. The differences between these types of imaging don’t end there.
This year, an estimate of 53,070 adults, have been or will be diagnosed with pancreatic cancer. (27,670 men and 25,400 women). Pancreatic cancer is the ninth most common cancer in women. Pancreatic cancer should have the most attention because doctors still don’t know how to diagnose this type of cancer yet. The main problem is cost-effective screening tests that easily and reliably find early-stages of pancreatic cancer in people, sometimes show no symptoms.Often “times it is” not found until later stages when the cancer can no longer be surgically removed and has spread from the pancreas to other parts of the body. ("Pancreatic Cancer: Statistics", 2017)
There are not many defined risk factors known for pancreatic cancer. Some risk factors are “family history of the disease, smoking, age, and diabetes (Mayoclinic).” Ideally, pancreatic cancer cells can be detected early and the patient can be treated surgically, but once the cancer has spread, it is usually incurable. A popular clinical tool used to detect pancreatic cancer “is a tumor marker called sialylated Lewis blood group antigen CA19–9, which can act as a sensitive tumor marker, value diminishes when used to detect small, resectable tumors (Maitra,
Approximately 20% of pancreatic cancer is found to be operable or resectable. The complete resection of the primary lesion is best treatment for patients with localized pancreatic cancer. However the risk of both local and distal recurrence is high in following resection. In early stage pancreatic cancer the complete resection are associated with considerable morbidity in 40–60% of patients and mortality in less than 3% of patients (Sohn et al., 2000; Winter et al., 2006). Moreover, it takes 2–3 months for complete recovery to a normal quality of life. Although the 5-year survival rate of resected pancreatic cancer is approximately 20% and the median overall survival time is 17–27 months (Winter et al., 2006).
Pancreatic cancer is the cancer that appears quickly and many die just as quick. Pancreatic cancer is the least known cancer to the medical world; puzzling doctors because most are not sure what diagnosis to look for. However, the risk factors include smoking, diabetes, and obesity. Studies show that pancreatic cancer has a higher percentage in the African American community due to environmental risk factors (John Hopkins Pathology, 2012).
Pancreatic Cancer is the leading cause of cancer deaths in the United States. Currently there is no cure for this cancer and all available treatments simply prolong the life of the patient. Diagnosing pancreatic cancer rarely occurs at the onset of the disease due to the location of the pancreas in the body. Symptoms such as weight loss and upper abdominal pain do not show up until it is too late. Enzymes produced by tumors known as tumor markers are not reliable until the disease has well progressed. Once you have been diagnosed with Pancreatic Cancer there are different types of treatments that are offered to prolong your life.
Abdominal ultrasound is sometimes used for quick and cheap first examinations. If there is uncertainty about the diagnosis they may do a biopsy by fine needle aspiration. Pancreatic cancer is usually staged after a ct scan is done. The staging system is four stages,from early to advanced and based on TNM classification.TNM stands for Tumor size, spread to lymph nodes,and metastasis. Based on if surgical removal seems possible,the tumors are divided into three broader categories to help decide treatment. Tumors are resectable, borderline resectable or undetectable. If the disease is still in an early stage(stage 1 or 2) surgical resection of the tumor can be performed. Stage 3 tumors can be borderline resectable where surgery can technically still be done or unresectable where its to locally advanced. Stage 1 cancer is only found in the pancreas. Stage 1 is divided into a and b stages based on tumor size. Stage 1a is when the tumor is no bigger than 2 cm. Stage 1b is when the tumor is bigger than 2 cm. The second stage is when the cancer could have spread to nearby tissue and organs, and may have also spread to the lymph nodes near the
There are many forms of cancer. Breast Cancer, Lung Cancer, Leukemia, and Brain Cancer just to name a few, but the one I am bringing attention to in this essay is Pancreatic Cancer. Pancreatic Cancer is a very aggressive form of cancer and it has many risky factors. Many people do not know those risky factors important information dealing with Pancreatic Cancer and I will explain a few of those important things in this essay. The American Cancer Society and the Cancer Treatment Centers of America gave me a lot of information to help write about this topic.
Pancreatic Cancer is currently one of the deadliest cancers in the world. In the United States alone, Pancreatic Cancer was the fourth leading cause of death among males and third in females causing 19,480 and 24,530 deaths respectively (Siegel et al., 2013). It has a five year survival rate of less than three percent in the United States (Siegel et al., 2013). This is mainly due to late diagnosis, surgical difficulties, aggressive metastases and resistance to apoptosis (Li et al., 2014). Surgical intervention has been seen as the most effective form of treatment for pancreatic tumors but due to late detection, surgical options become difficult to pursue. As a result, chemotherapy, and radiotherapy are the main routes of treatment for patients (Li et al., 2014). Unfortunately not only are these routes very low in efficacy (Li et al., 2014), but have incredibly devastating side effects on the body and the overall quality of life of patients (Love et al., 2006).
A histologic diagnosis is not usually required in patients who are candidates for surgery. The tissue diagnosis is made at the time of the surgical procedure. Percutaneous fine-needle aspiration biopsy of the pancreas, which is used to diagnose pancreatic tumors, is also used to confirm the diagnosis in patients whose tumors are not respectable so that a palliative plan of care can be determined. This may eliminate the stress and postoperative pain of ineffective surgery. In this procedure, a needle is inserted through the anterior abdominal wall into the pancreatic mass, guided by CT, ultrasound, ERCP, or other imaging techniques. The aspirated material is examined for malignant cells. Although percutaneous biopsy is a valuable diagnostic tool, it has some potential drawbacks: a false-negative result if small tumors are missed and the risk of seeding of cancer cells
Over 30,000 people are diagnosed with pancreatic cancer each year (Pancreatic Cancer 1). The pancreas is a small gland located near the stomach. Treatments for this type of cancer is very limited because it is often only discovered after it has progressed past the point of no return. Once the cancer has metastasized, or spread, the only option is to hope that chemotherapy and radiation can
As early as 1996, Moon et al evaluated the use of Whole-Body Fluorine-18-FDG PET in 57 patients suspected to have recurrent or metastatic breast cancer and proved that FDG PET was 93% sensitive and 79% specific
• A PET (positron emission tomography) scan may help to show cancer activity in some other parts of the body. This can be helpful for “staging” the cancer (see