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{{Pituitary adenoma}}
{{Pituitary adenoma}}
 
{{CMG}} {{AE}} {{AAM}}
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==Overview==
==Overview==
Pharmacologic medical therapy is recommended among patients with [[prolactinoma]], [[thyrotrophic]], [[somatotrophic]], and [[adrenocorticotrophic hormone|adrenocorticotropic]] adenomas.


'''Pituitary adenomas''' are [[tumor]]s that occur in the [[pituitary gland]], and account for about 10% of intracranial [[neoplasia|neoplasms]]. They often remain undiagnosed, and small pituitary tumors are found in 6 to 24 percent of adults at autopsy.
==Medical Therapy==
Pituitary adenomas arise within the anterior lobe (adenohypophysis) of the gland . Tumors less than 1 cm are called micro adenomas. Clinical symptoms depend on whether the tumor is secreting or nonsecreting. Nonsecreting adenomas grow and compress adjacent structures, most commonly causing a bitemporal hemianopsia due to chiasmatic compression. Lateral extension into the cavernous sinuses can result in cranial nerve palsies.
Treatment options depend on the type of [[tumor]] and on its size:
 
* '''Prolactinomas''' are most often treated with [[dopamine agonists]] such as [[bromocriptine]] and [[cabergoline]]. The latter, decreases [[tumor]] size as well as alleviates [[symptoms]]. [[Dopamine agonist|Dopamine agonists]] are followed by serial imaging to detect the recurrence. If the adenoma is large, treatment may include [[radiation therapy]] and [[surgery]]. Efforts have been made to use a [[progesterone]] [[antagonist]] for the treatment of prolactinomas, but so far have not proved successful.
==Medical therapy==
* '''Thyrotrophic adenomas''' respond to [[Somatostatin|octreotide, a long-acting somatostatin analog]], in many but not all cases according to a review of the medical literature. Unlike [[prolactinomas]], thyrotrophic adenomas characteristically respond poorly to [[dopamine agonist]] treatment.
Treatment options depend on the type of tumor and on its size:
*'''Somatotrophic adenomas'''  can be treated with [[Octreotide|somatostatin analogues]], dopamine analogues, and the newer GH-receptor antagonists, such as [[pegvisomant]].
* '''[[Prolactinoma]]s''' are most often treated with [[bromocriptine]] or more recently, [[cabergoline]] which, unlike bromocriptine, decreases tumor size as well as alleviates symptoms, both dopamine agonists, and followed by serial imaging to detect any increase in size. Treatment where the tumor is large can be with [[radiation therapy]] or surgery, and patients generally respond well. Efforts have been made to use a progesterone [[antagonist]] for the treatment of prolactinomas, but so far have not proved successful.
*''' Adrenocorticotropic adenomas''' can be treated with [[ketoconazole]], an inhibitor of [[steroidogenesis]], it's considered as a  drug of choice in adjunctive medical therapy for [[Adrenocorticotropic hormone|ACTH]]-producing adenomas.
* '''Thyrotrophic adenomas''' respond to [[Somatostatin|octreotide, a long-acting somatostatin analog]], in many but not all cases according to a review of the medical literature. Unlike prolactinomas, thyrotrophic adenomas characteristically respond poorly to dopamine agonist treatment.{{ref_label|thyrotrophic|1|a}}
*'''Recurrent macroadenoma''' can be treated with [[octreotide]], a long-acting somatostatin analogue. This can result in both reduction of the size of the [[tumour]] and reduction in the [[serum]] levels of [[growth hormone]].<ref name="Radiopaedia"> Dr Amir Rezaee and Dr Yuranga Weerakkody http://radiopaedia.org/articles/pituitary-adenoma 2015. URL accessed on 9 30 2015</ref>
*[[Clomifene]] is contraindicated in patient with pituitary adenoma.


==References==
==References==
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{{Reflist|2}}
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Latest revision as of 19:56, 2 October 2019

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Ahmad Al Maradni, M.D. [2]

Overview

Pharmacologic medical therapy is recommended among patients with prolactinoma, thyrotrophic, somatotrophic, and adrenocorticotropic adenomas.

Medical Therapy

Treatment options depend on the type of tumor and on its size:

References

  1. Dr Amir Rezaee and Dr Yuranga Weerakkody http://radiopaedia.org/articles/pituitary-adenoma 2015. URL accessed on 9 30 2015