zystische Läsionen der Sellaregion
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MRI of a
benign pituitary cyst. Pituitary cysts are not rare and if large enough they can cause symptoms by compression of the pituitary gland or suprasellar structures.
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Magnetic
resonance imaging of sellar and juxtasellar abnormalities in the paediatric population: an imaging review. Pars intermedia cyst. Sagittal T1WI (a) and axial T2WI (b) shows a small cyst between the anterior and posterior pituitary which lacks contrast enhancement on axial fat-suppressed T1WI (c)
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Magnetic
resonance imaging of sellar and juxtasellar abnormalities in the paediatric population: an imaging review. Epidermoid. Sagittal T1WI (a) shows an extra-axial lesion along the endocranial surface which has heterogeneous mostly low-intermdiate signal, and on T2WI has high signal (b). Diffusion-weighted imaging (DWI) (c) shows restricted diffusion
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Magnetic
resonance imaging of sellar and juxtasellar abnormalities in the paediatric population: an imaging review. Arachnoid cyst. Sagittal T1WI (a) and coronal T2WI (b) show a well defined cystic mass with low T1 and high T2 signal intensity with sellar and suprasellar components
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Magnetic
resonance imaging of sellar and juxtasellar abnormalities in the paediatric population: an imaging review. Cavernous malformation: coronal T2WI (a) and axial gradient echo (GRE) (b) images in a 5-year-old girl show a large suprasellar lesion with mixed low, intermediate and high signal intensity with a thin rim of low signal on T2WI and foci of low T2* signal from susceptibility effects of blood products on GRE
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Magnetic
resonance imaging of sellar and juxtasellar abnormalities in the paediatric population: an imaging review. Rathke’s cleft cyst. Sagittal T1WI (a) shows a lesion in the central portion of the pituitary gland which has high signal. Post-contrast sagittal fat-suppressed T1WI (b) shows lack of enhancement of the Rathke cleft cyst. The cyst has intermediate signal on T2WI (c) secondary to slightly elevated protein content
Mostly/purely cystic pituitary region masses have a short differential.
Differential diagnosis
- Rathke cleft cyst
- arachnoid cyst
- empty sella
- craniopharyngioma (adamantinomatous type): 90% have calcification
- epidermoid cyst
Related Radiopaedia articles
Pituitary region masses
- general reading
- pituitary gland anatomy
- pituitary MRI - an approach
- pituitary region masses
- most common pituitary region masses
- solid and enhancing pituitary region mass
- mixed cystic and solid pituitary region mass
- mostly/purely cystic pituitary region masses
- purely intrasellar pituitary mass
- pituitary region mass with intrinsic high T1 signal
- abnormal enhancement/bulkiness of the pituitary infundibulum
- enlarged sella turcica
- mnemonic: SATCHMO
- history of imaging the pituitary region
- pathology
- pituitary tumors
- pituitary adenoma (commonest in the adult population)
- pituitary carcinoma
- pituitary lymphoma
- meningioma
- craniopharyngioma
- optic pathway glioma
- germinoma
- chordoma
- dermoid (CNS) / epidermoid / intracranial teratoma
- pituicytoma
- spindle cell oncocytomas
- pituitary metastases
- granular cell tumor of the pituitary (pituitary choristoma)
- pilocytic astrocytoma of the neurohypophysis (infundibuloma)
- cellular infiltrates
- other lesions
- anterior circulation berry aneurysm
- hamartoma (tuber cinereum hamartoma)
- Rathke cleft cyst
- intracranial lipoma
- sphenoid sinus mucocoele
- pituitary abscess
- pituitary stone
- pituitary tumors
Siehe auch:
- Rathke Zyste
- Tumoren der Hypophysenregion
- verdickter Hypophysenstiel
- Empty-Sella-Syndrom
- Kraniopharyngeom
- epidermale Inklusionszyste
- Pars intermedia-Zyste der Hypophyse
- pituitary region mass with intrinsic high T1 signal
- pituitary MRI - an approach
- zystische Läsionen in der Hypophyse
- mixed cystic and solid pituitary region mass
- purely intrasellar pituitary mass
- zystisches Hypophysenadenom
- SATCHMO
- supraselläre Arachnoidalzyste
- solid and enhancing pituitary region masses
- cystic suprasellar mass
und weiter:
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