Diagnosis
The presence of glucagonoma syndrome, the symptoms that accompany the pancreatic tumor, as well as elevated levels of glucagon in the blood, are what is used to diagnose glucagonoma. When a person presents with a blood glucagon concentration greater than 500 mg/mL along with the glucagonoma syndrome, a diagnosis can be established. It is important to note that not all cases of hyperglucagonemia will lead to a diagnosis of glucagonoma. Elevated blood levels of glucagon are associated with other disorders like pancreatitis and kidney failure.About 60% of people diagnosed with glucagonoma are women. Most of those that are diagnosed are between 45–60 years of age. Treatment
People who are diagnosed with sporadic glucagonoma often have an increased mortality rate compared to those with MEN1, as the latter group will go to the doctor for periodic visits. People whose tumor have metastasized cannot easily be treated as the tumor is resistant to chemotherapy. The only curative therapy for glucagonoma is surgery, and even this is not always successful.Heightened glucagon secretion can be treated with the administration of octreotide, a somatostatin analog, which inhibits the release of glucagon. Doxorubicin and streptozotocin have also been used successfully to selectively damage alpha cells of the pancreatic islets. These do not destroy the tumor, but help to minimize progression of symptoms. History
Fewer than 251 cases of glucagonoma have been described in the literature since their first description by Becker in 1942. Because of its rarity (fewer than one in 20 million worldwide), long-term survival rates remain unknown.
Fibroma of tendon sheath is a benign tumor that presents as a small subcutaneous nodule that slowly increases in size. The tumors often have a multinodular growth pattern, with individual nodules being composed of bland, slender, spindle-shaped cells (myofibroblasts) in a dense, fibrous matrix.” A common microscopic finding is the presence of elongated, slit-like blood vessels. The lesions nearly always arise in the distal portions of the extremities. They often occur on the fingers, hands, toes, or feet. Although they are benign, they may recur in up to 40% of cases.Although they may be regarded as a tumor of the skin, the lesions arise from tendons and aponeuroses in superficial sites, and are therefore properly classified as in the category "soft tissue tumor." The World Health Organization, 2020, reclassified these tumors as a specific, benign tumor type in a broad category of soft tissue neoplasms termed fibroblastic and myofibroblastic tumors.The biological nature of Fibroma of tendon sheath is not known, but the category appears to comprise a number of different pathologic processes. It is considered that about one-third of the lesions in this category may be acral variants of the entity, nodular fasciitis. See also
Giant cell tumor of the tendon sheath
List of cutaneous conditions


== References ==