High Yield day 2: thoracic, peds, nucs Flashcards
(383 cards)
Which condition spares the disc space in the spine?
TB osteomyelitis in the spine
What is the purpose of the LMO in breast imaging?
For kyphosis, pectus excavatum, and to avoid a pacemaker / line
The LMO (Lateral Medial Oblique) view can help in specific anatomical situations.
What is the imaging characteristic of a Rathke Cleft Cyst?
Pituitary - T2 Bright
Rathke Cleft Cysts typically appear hyperintense on T2-weighted MRI.
What tumor is associated with calcification in the pituitary region?
Craniopharyngioma
Craniopharyngiomas are often calcified and can be seen on imaging.
What condition invades the internal auditory canal at the cerebellopontine angle?
Schwannoma
Schwannomas are benign tumors that originate from Schwann cells and can affect the auditory pathways.
What is the characteristic of a Schwannoma with NF2?
Invades Both Internal Auditory Canals
Neurofibromatosis type 2 (NF2) is associated with bilateral vestibular schwannomas.
What type of lesion restricts on diffusion at the cerebellopontine angle?
Epidermoid
Epidermoid cysts can demonstrate restricted diffusion on MRI due to their unique composition.
What pediatric brain tumor arises from the vermis?
Medulloblastoma
Medulloblastomas are common malignant brain tumors in children and often arise from the cerebellar vermis.
What pediatric tumor is described as ‘tooth paste’ coming out of the 4th ventricle?
Ependymoma
Ependymomas can have a characteristic appearance on imaging, resembling ‘toothpaste’ when they obstruct cerebrospinal fluid pathways.
At what age does the adult myelination pattern show
shows T1 at 1 year and T2 at 2 years
Adult myelin is T1 bright and T2 dark
Which structures are myelinated at birth?
Brainstem and posterior limb of the internal capsule
Early myelination of these structures is crucial for basic neurological functions.
What is the most common TORCH infection?
CMV
Cytomegalovirus (CMV) is the most prevalent infectious agent in the TORCH complex, which includes congenital infections that can affect fetal development.
What is the most common type of craniosynostosis?
Scaphocephaly
This condition is characterized by a long, narrow head shape.
What condition is associated with hypothalamic pituitary adrenal axis issues?
Piriform aperture stenosis
This condition can affect craniofacial development and endocrine function.
What is the most common primary petrous apex lesion?
Cholesterol Granuloma
This lesion can cause various neurological symptoms depending on its size and location.
What syndrome is characterized by absence of the bony modiolus in 90% of cases?
Large vestibular aqueduct syndrome
This condition can lead to hearing loss and balance issues.
What type of scan will be positive for esthesioneuroblastoma?
Octreotide scan
Esthesioneuroblastoma is a rare neuroendocrine tumor of the nasal cavity.
What is the main vascular supply to the posterior nose?
Sphenopalatine artery
This artery is a terminal branch of the internal maxillary artery.
What type of tumors take up pertechnetate?
Warthins tumors
These benign tumors are typically found in the salivary glands.
What condition is associated with salivary gland lymphoma?
Sjogren’s syndrome
Sjogren’s syndrome is an autoimmune disorder that can lead to lymphoproliferative complications, including lymphoma.
What is the most common intra-ocular lesion in an adult?
Melanoma
Melanoma is a type of skin cancer that can occur in the eye, presenting as an intra-ocular lesion.
How long after spine surgery is enhancement of nerve roots considered normal?
6 weeks
Enhancement beyond 6 weeks may indicate complications such as arachnoiditis.
What is the most important factor for outcome in a traumatic cord injury?
Hemorrhage in the cord
Hemorrhage can lead to increased pressure and damage to spinal cord tissue, affecting recovery.
What are the components of Currarino Triad?
- Anterior Sacral Meningocele
- Anorectal malformation
- Sarcococcygeal osseous defect
Currarino Triad is a congenital condition associated with spinal and anorectal anomalies.