Diagnosis of<unk>  can be made, or at least suspected, by a constellation of related symptoms presented above. The differential diagnosis includes<unk>  tuberculoma, especially in developing countries and in immumocompromised patients. The diagnosis is confirmed by testing hormone levels, and by radiographic imaging of the<unk>  (for example, by CT scan or MRI). Classification Unlike tumors of the posterior<unk> ,<unk> s are classified as endocrine tumors (not brain tumors).<unk> s are classified based upon anatomical, histological and functional criteria. * Anatomically<unk>  tumors are classified by their size based on radiological findings; either microadenomas (less than Image:Pituitary adenoma (2) GH production.Somatotroph<unk> , showing acidophilic cytoplasm File:Histopathology of eosinophilic silent gonadotroph<unk> .A silent gonadotroph<unk>  which is, in this case, is eosinophilic (contrary to normal, basophilic, gonadotroph cells) File:Histopathology of a true null cell adenoma.True null cell adenomas are typically composed of uniform, mildly atypical cells with chromophobic cytoplasm. This case has papillary architecture similar to gonadotroph adenomas.<unk>  incidentalomas<unk>  incidentalomas are<unk>  tumors that are characterized as an incidental finding. They are often discovered by computed tomography (CT) or magnetic resonance imaging (MRI), performed in the evaluation of unrelated medical conditions such as suspected head trauma, in cancer staging or in the evaluation of nonspecific symptoms such as dizziness and headache. It is not uncommon for them to be discovered at autopsy. In a meta-analysis, adenomas were found in an average of 16.7% in postmortem studies, with most being microadenomas (<10mm); macrodenomas accounted for only 0.16% to 0.2% of the decedents. While non-secreting, noninvasive<unk>  microadenomas are generally considered to be literally as well as clinically benign, there are to date scant studies of low quality to support this assertion. It has been recommended in the current Clinical Practice Guidelines (2011) by the Endocrine Society - a professional, international medical organization in the field of endocrinology and metabolism - that all patients with<unk>  incidentalomas undergo a complete medical history and physical examination, laboratory evaluations to screen for hormone hypersecretion and for hypopituitarism. If the lesion is in close proximity to the optic nerves or optic chiasm, a visual field examination should be performed. For those with incidentalomas which do not require surgical removal, follow up clinical assessments and neuroimaging should be performed as well follow-up visual field examinations for incidentalomas that abut or compress the optic nerve and chiasm and follow-up endocrine testing for macroincidentalomas. Ectopic<unk>  An ectopic (occurring in an abnormal place)<unk>  is a rare type of tumor which occurs outside of the sella turcica, most often in the sphenoid sinus, suprasellar region, nasopharynx and the cavernous sinuses. Metastases to the<unk>  gland Carcinomas that metastasize into the<unk>  gland are uncommon and typically seen in the elderly, with lung and breast cancers being the most prevalent, In breast cancer patients, metastases to the<unk>  gland occur in approximately 6-8% of cases. Symptomatic<unk>  metastases account for only 7% of reported cases. In those who are symptomatic Diabetes insipidus often occurs with rates approximately 29-71%. Other commonly reported symptoms include anterior<unk>  dysfunction, visual field defects, headache/pain, and ophthalmoplegia.
Pituitary adenoma
Adrenocortical adenoma
Metanephric adenoma
Thyroid adenoma
Parathyroid adenoma
Hürthle cell adenoma
Nephrogenic adenoma
Pituitary disease