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MetastasesInvasionCellsDiseaseBrainSeparateSiteTypesNote

Metastases1

• Abnormal growths of tissue that follow a previous neoplasm but are not metastases of the latter. (lookformedical.com)

Invasion2

• Pituitary tumorigenesis is driven by germline and somatic mutations as well as genetic and epigenetic mechanisms, interacting in complex ways still not entirely understood and influencing tumor formation, growth, and invasion. (medscape.com)
• Malignant neoplasms show a greater degree of anaplasia and have the properties of invasion and metastasis, compared to benign neoplasms . (lookformedical.com)

Cells1

• Pituitary adenomas are neuroendocrine tumors derived from intrinsic cells of the adenohypophysis. (medscape.com)

Disease1

• See also Pituitary Tumors , Pituitary Macroadenomas , Pituitary Microadenomas , Pituitary Apoplexy , and Pituitary Disease and Pregnancy . (medscape.com)

Brain1

• It is also employed for the detection of malignant tumors including those of the brain, liver, and thyroid gland. (lookformedical.com)

Separate1

• In this section the general characteristics of pituitary adenomas are discussed, followed by separate sections on subtypes of pituitary adenomas, pituitary neuroendocrine tumors grading, and pituitary carcinomas. (medscape.com)

Site1

• Transfer of a neoplasm from its primary site to lymph nodes or to distant parts of the body by way of the lymphatic system. (lookformedical.com)

Types1

• Numerous types of tumors may involve the pituitary gland and sellar region, reflecting the complex anatomy of this area. (medscape.com)

Note1

• Note the delicate acinar pattern of a normal pituitary gland (left), in contrast with disruption of the normal reticulin network in adenoma (right) (Wilder reticulin stain). (medscape.com)