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Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2

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Nội dung chi tiết: Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2

Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2

Cyst with a Mural NoduleJUAN E. SMALL. MDT1 PostT1 PostCASE A: A 51-year-old mon with o history of heodaches for Ó weeks now presenting with dizziness

Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2s and nausea.T1 PostT1 PostCASE B: A 36-year-old Brazilian woman presenting with a 5-day history of progressive confusion, paranoid delusions, and mag

ical thinking.167168 Brain and CoveringsDESCRIPTION OF FINDINGS•Case A: A supratentorial right temporal cyst with an enhancing mural nodule. No edema Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2

or other lesions are noted.•Case B: An infratentorial right cerebellar cyst with an enhancing mural nodule. No edema or other lesions are noted.DIAGNO

Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2

SISCase A: GangliogliomaCase B: HemangioblastomaSUMMARYA number of lesions may present with the imaging appearance of a cyst with an enhancing mural n

Cyst with a Mural NoduleJUAN E. SMALL. MDT1 PostT1 PostCASE A: A 51-year-old mon with o history of heodaches for Ó weeks now presenting with dizziness

Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2 can this differential diagnosis be tailored in a useful way? The location of the lesion, coupled with the age of the patient, can help narrow the dif

ferential diagnosis (Tables 27-1 and 27-2).The supratentorial or infratentorial position of the lesion statistically limits the considerations. Becaus Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2

e the most common lesion in the posterior fossa in an adult patient is a metastasis, an atypical appearance of a metastasis (as a cyst with an enhanci

Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2

ng mural nodule) is an important consideration.TABLE 27-1 LocationH.Posterior FossaTemporal LobePilocytic astrocytomaGangl iogliomaHemangioblastomaPle

Cyst with a Mural NoduleJUAN E. SMALL. MDT1 PostT1 PostCASE A: A 51-year-old mon with o history of heodaches for Ó weeks now presenting with dizziness

Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2angioblastomaGlioblastoma multiforme MetastasisIn addition, the most common primary posterior fossa mass in an adult patient is a hemangioblastoma, wh

ich is associated with von Hippel-Lindau disease. The presence of flow voids within the mural nodule suggests a highly vascular lesion such as a heman Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2

gioblastoma. although highly vascular metastasis also may appear in this manner. In adults, it also is important to note that glioblastoma multiforme

Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2

can at times have a prominent cystic component and can have extensive necrosis with enhancing mural components.In the pediatric population, on the oth

Cyst with a Mural NoduleJUAN E. SMALL. MDT1 PostT1 PostCASE A: A 51-year-old mon with o history of heodaches for Ó weeks now presenting with dizziness

Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2ma. In pediatric patients, adolescents, and young adults, a supratentorial mass appearing as a cyst with a mural nodule raises concern for a ganglio-g

lioma, pleomorphic xanthoastrocytoma. or supratentorial pilocytic astrocytoma. Case A was somewhat atypical considering his adult age.If multiple lesi Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2

ons are present, metastases are the primary consideration. However, if the clinical presentation suggests an infectious etiology, neurocysticercosis,

Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2

with its scolex as the mural nodule, is the primary diagnostic consideration.SPECTRUM OF DISEASEHemangioblastoma: Approximately 33% to 60% are a cyst

Cyst with a Mural NoduleJUAN E. SMALL. MDT1 PostT1 PostCASE A: A 51-year-old mon with o history of heodaches for Ó weeks now presenting with dizziness

Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2sa lesions are more often cystic (70%) and the uncommon supratentorial lesions are more rarely cystic (20%). Approximately 76% appear in the posterior

fossa; 9% are supratentorial; 7% appear in the spinal cord; and 5% appear in the brainstem.Pleomorphic xanthoastrocytoma: Fewer than 48% are a cyst w Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2

ith an enhancing mural nodule; 52% are solid; less than 2% appear in the posterior fossa; and 98% are supratentorial. Only two case reports of spinal

Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2

cord pleomorphic xanthoastrocytoma exist in the literature.Pilocytic astrocytoma: 67% percent are a cyst with an enhancing mural nodule (21% have a no

Cyst with a Mural NoduleJUAN E. SMALL. MDT1 PostT1 PostCASE A: A 51-year-old mon with o history of heodaches for Ó weeks now presenting with dizziness

Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2nd 16% arc a nonenhancing necrotic mass. The most common location is the cerebellum, but when the lesion is supratentorial, it most commonly occurs in

the oplie nerve or diencephalon (chiasm hypothalamus, iloor of the third ventricle), thalamus, and rarely occurs in the spinal cord. Ebook Neuroradiology - Key differential diagnoses and clinical questions: Part 2

Cyst with a Mural NoduleJUAN E. SMALL. MDT1 PostT1 PostCASE A: A 51-year-old mon with o history of heodaches for Ó weeks now presenting with dizziness

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