By Roy Riascos, Eliana Bonfante
This booklet isn't really meant to educate neuroradiology--it is just a assessment of the main widespread pathologies and serves as a device for you to inform them aside. after all, telling them aside isn't constantly attainable, and that's the entire trick of giving a pertinent set of differential diagnoses and attempting to want one over the opposite. Our recommendation is to consistently examine the 1st photograph and check out to explain up to you can, Read more...
summary: This publication isn't really meant to coach neuroradiology--it is simply a evaluation of the main common pathologies and serves as a device as a way to inform them aside. after all, telling them aside isn't really consistently attainable, and that's the entire trick of giving a pertinent set of differential diagnoses and attempting to want one over the opposite. Our recommendation is to regularly examine the 1st snapshot and check out to explain up to you could, as though it used to be the one snapshot you had on hand, then wade through the remainder of the photographs and notice if the idea approach was once comparable. it might be most unlikely to incorporate the entire pertinent differential diagnoses for every case with the structure dilemma of 3 differential diagnoses in keeping with case. this fashion of training imaging research can either be just like and intensely diverse out of your day-by-day medical perform. usually, the pertinent discovering or telltale signal to accomplish a analysis lies in exactly some of the photographs inside a complete exam; even if, you'll want to see the full case and locate those. right here, photographs which were deemed key by means of another person are chosen, providing you with the benefit of a concentrated seek however the quandary of a slim illustration. you'll end up pissed off by way of supplying a wholly various differential prognosis from the single provided to you right here, yet remember that an analogous case could have a very diversified technique in response to how it is gifted, the order of the photographs, or the discovering within which you're focusing your means of notion. extra references are supplied that can assist you widen the scope of your evaluate, particularly in matters that you could be locate tougher or controversial--Provided via writer
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Extra resources for Radcases Neuro Imaging
Sample text
They are hypoattenuated on CT (this helps to differentiate them from medulloblastomas). They typically extend through the foramen of Luschka to the subarachnoid space. They arise from the floor of the 4th ventricle (medulloblastomas usually arise from the roof). • Pilocytic astrocytoma: These are the most common pediatric brain tumors. They are cystic with a mural nodule. They have low attenuation on CT (medulloblastomas are typically hyperattenuated). The most common location is the cerebellar hemisphere.
Essential Facts • Calcification is associated with higher-grade tumors. • Calcification and vasogenic edema are rare in children. • Low-grade tumors (World Health Organization [WHO] grades I and II) are called oligodendrogliomas. • High-grade oligodendrogliomas (WHO grade III) are called anaplastic oligodendrogliomas. indd 42 ¸ Pearls & ˚ Pitfalls ¸ Tumors with 1p and 19q deletions are more likely to calcify and have ill-defined margins; even though these tumors tend to be more aggressive, they also respond better to chemotherapy.
3 parts per million (ppm). (D) Axial T1WI with contrast shows no enhancement of the mass; the hyperintense regions (arrow) were bright in the nonenhanced sequences (related to fat). ■ Differential Diagnosis • Nonruptured dermoid cyst: Dermoid cysts are ectodermal inclusion cysts that contain squamous and glandular tissue. The tissue causes the cysts to grow, increasing the likelihood of ruptures. They account for fewer than 5% of intracranial tumors and are most frequent in the midline. A supratentorial location is more common than an infratentorial location.