What is an islet cell tumor?
A tumor that forms in islet cells (hormone-making cells) of the pancreas. Islet cell tumors may be benign (not cancer) or malignant (cancer). Islet cells make several different hormones that affect body functions, including controlling the amount of glucose (sugar) in the blood and helping digest food in the stomach.
What is the most common pancreatic endocrine neoplasm?
Insulinomas are the most common functioning pancreatic endocrine tumors.
What do islet cells do?
A pancreatic cell that produces hormones (e.g., insulin and glucagon) that are secreted into the bloodstream. These hormones help control the level of glucose (sugar) in the blood.
Is Gastrinoma an islet cell tumor?
Pancreatic islet cell tumors can be noncancerous (benign) or cancerous (malignant). Islet cell tumors include: Gastrinoma (Zollinger-Ellison syndrome)
How successful is islet cell transplant?
Using enhanced techniques to collect and prepare the extremely fragile donor islet cells, as well as using improved anti-rejection drugs, the researchers achieved a 100% success rate. All of the patients in their trial were freed from the need for insulin for at least one month.
Which of the following is considered an islet cell tumor of the pancreas?
Pancreatic islet cell tumors can be noncancerous (benign) or cancerous (malignant). Islet cell tumors include: Gastrinoma (Zollinger-Ellison syndrome) Glucagonoma.
Are mediastinal germ cell tumors benign or malignant?
Alternatively, anterior mediastinal germ cell tumors can be thought of as benign and malignant 1: Mature teratomas are the most frequent histology encountered in the mediastinum (see mediastinal teratoma) and account for ~60% (range 50-70%) of all mediastinal germ cell tumors 2.
What are the histologic findings of anterior mediastinal mass?
Germ cell tumors are one of the causes of anterior mediastinal mass, and any of the germ cell histologies may be identified. They can therefore be divided histologically into: seminoma. non-seminomatous germ cell tumors (NSGCT) embryonal cell carcinoma. choriocarcinoma. yolk sac tumor.
Is this a mediastinal mass on the chest radiograph?
The chest radiograph on the right shows a lesion with an obtuse angle to the mediastinum. This must be a mediastinal mass. Since there is a silhouette-sign with the right heart border – which is located anteriorly – we can deduce that the mass must be located within the anterior mediastinum. The lesion on the left was a pancoast tumor.
How are mediastinal masses (MMS) classified?
A practical way of distinguishing among mediastinal masses is categorizing them according to their predominant CT attenuation values, which are primarily composed of fat, water, soft tissue, calcium, or vascular structures (Table 1).