Locked-in syndrome is due to the stroke of this artery
What is Tension headache?
Disorder of increased RBCs. May present as intense itching after a hot shower.
What is polycythemia vera?
Infection of the biliary tree usually due to obstruction that leads to stasis and bacterial overgrowth. Symptoms include jaundice, fever, and RUQ pain
What is ascending cholangitis?
Psammoma bodies + nuclear grooves + empty-appearing nuclei with central clearing on histology.
What is papillary carcinoma?
This syndrome can present with a port-wine stain the in CN V1/V2 distribution
What is Sturge-Weber Syrdrome?
Appearance of increased CSF on imaging, but is actually due to decreased brain tissue and neuronal atrophy.
What is hydrocephalus ex vacuo?
Cancer that is association with hypercalcemia, renal involvement, bone lytic lesions and anemia.
What is multiple myeloma?
Usually seen in premature, formula-fed infants with an immature immune system and can lead to pneumatosis intestinalis.
What is necrotizing enterocolitis?
Cystic bone spaces filled with brown fibrous tissue usually due to increased PTH
What is Osteitis fibrosa cystica?

Damage to this nerve can present with visual problems going down the stairs.
What is trochlear nerve?
Disorder that is due to correcting serum sodium too fast.
What is desmopressin?
What is Zenker diverticulum?
Symptoms: hyperpigmentation, headaches and bitemporal hemianopsia
What is Nelson Syndrome?
This is AGING-related progressive bilateral sensorineural hearing loss
Most common childhood supratentorial tumor derived from the remnants of Rathke's pouch
What is craniopharyngioma?
Triad of iron deficiency anemia, esophageal webs, and dysphagia.
What is Plummer-Vinson Syndrome?
This disease presents with hyperplasia of gastric mucosa and looks like hypertrophied rugae on imaging like brain gyri
What is menetrier disease?

Sudden hemorrhage of the pituitary gland, often in the presence of an existing pituitary adenoma.
What is Pituitary Apoplexy?
Subacute combined degeneration is due to this deficiency
What is Vitamin B12?
Disorder characterized by staggering gait, frequent falling, diabetes mellitus, hypertrophic cardiomyopathy, pes cavus.
What is Friedreich ataxia?
Increased complement mediated intravascular RBC lysis. CD55/59-. Red urine after waking up.
What is Paroxysmal Nocturnal Hemoglobinuria?
Thrombosis or compression of hepatic vein with centrilobular congestion and necrosis leading with congestive liver disesase. Nutmeg liver
Tumor of pancreatic delta cells that may present with diabetes, steatorrhea, gallstones, etc. Can be treated with octreotide
What is a somatostatinoma?