Primer Flashcards
Cafe-au-lait spots, hypogonadism, multiple NOF, CV Abn
Jaffe-Campanacci syndrom
MC loc of ossifying fibroma
Ant Tib diaphysis
Ossifying fibroma vs adamantinoma age?
OF in young <10
Adamantinoma 10-30
Staging system of MM
Durie and Salmon Plus system
MC joint with PVNS
Knee
Angiosarcoma in patient with history of radical mastectomy
Stewart-Treves syndrome
MC cause of primary HPT
Adenoma
MC cause of secondary HPT
Renal failure
MC loc of brown tumors
Pelvis, mandible and femur
Chondrocalcinosis, ST Vascular Ca and Rugger jersey is primary or secondary HPT
Chondrocalcinosis - Primary
ST and Rugger jersey - Secondary
Paget disease tumors ass’d (Face and body)
Face - GCT
Elsewhere - Osteosarcoma
Familial MEN type 2a is AKA
Sipples syndrome
SLE looks like what other condition radiographically
Jaccoud arthropathy
Type of Xray radiation that does not cause ionization
Coherent scatter/Thompson
Increasing KvP will increase or decrease compton effect
Increases compton
What is the quality of Xrays measured by
Half-value layers
Is there a patient dose with compton scatter
no
2 developer reducing agents
Hydroquinone and phenidone
2 restrainers in the developer
Potassium bromide/iodide
Fixing agent
Ammonium thiosulfate
Key factor in Xray optical density
mAs
Esophageal webs are seen with what 2 conditions
Plummer vinson and hypopharyngeal carcinoma
Ass’d with hiatal hernia
Esophagitis and duodenal ulcer
What portion of the esophagus is affected in scleroderma
Distal 2/3
Chaga dz affects which organs
Esophagus, colon, heart and CNS
Malignancy/NSAID use have ulcers on what aspect of the stomach
Greater cervature
Giant hypertrophic gastritis is AKA
Menetrier dz
Rad findings in ZES
Multiple ulcers, thickened folds seen postbulbar
2 types of adenomatous polyps are
Cillous and hamartomatous
3rd MC GI malignancy is
Gastric carcinoma
Gastric CA likes to mets to the
Liver
Gastric volvulus with obstruction/ischemia is
Mesenteroaxial (SAX to the organ)
Major papilla is AKA
Vater
Minor papilla is AKA
Santorini
Where are ulcers more common stomach or duodenum
Duodenum
Healed ulcer is seen as what shape
Cloverleaf or hourglass
Duodenal tumors are more benign or malignant
Benign
2 MC duodenal tumors
Lipoma and leiomyoma
MC malignant duodenal tumor
adenocarcinoma
Key small bowel feature in scleroderma
Hypomobile, dilated loop of bowel
Loc of pseudosacculations are found on the
Antimesenteric border
MC location of carcinoid tumors in the GI
Appendix
MC loc of adenomatous polyps
Rectum/sigmoid
MC intestinal polyposis syndrome
FAP
What layer of the GI is involved with cobblestone appearance
Submucosal
What is creeping fat
Excessive fat deposition around the serosal surface in Crohn disease
Crohns vs UC has pseudopolyps
UC
Crohns vs UC has fistula
Crohns
behcet mimics; Crohns vs UC
Crohns
Typhilitis loc and population
Leukemics with therapy, likes the cecum, terminal ileum
MC cause of pseudomembranous colitis and what GI follow-through sign would be seen
Clostridial difficile and Accordian sign (Barium between thickened folds)
What % of appendocoliths are calcified for XR
10%
Cause of ischemic bowel disease in SMA and IMA
SMA - occlusive and IMA - Nonocclusive
MC loc of volvulus
Sigmoid
MC cause of toxic megacolon
UC
% of patients with cirrhosis get HCC
90%
How many HU higher is the liver than the spleen (Normally)
10 HU - Liver is 55-65
Complication of primary hemochromatosis
HCC
Do liver hemangiomas change in size
Yes - pregnancy, birthcontrol pills
Central scar T2 SI in FNH and fibrolamellar HCC
FNH - Bright T2
HCC - Low T2
Mirrizzi syndrome
Cystic duct stone that obstructs the common hepatic duct
MC cause of acute colangitis
E. Coli
Cholesterosis is AKA what in the gallbladder
Strawberry gallbladder
UC vs Crohns asso’d with GB CA
UC (also cholangiocarcinoma)
Phlegmon vs Abscess
A phlegmon is unbounded and can keep spreading out along connective tissue and muscle fiber. An abscess is walled in and confined to the area of infection.
Beckwith-Wiedmann syndrome is ass’d with
Pancreatoblastoma
MC functional Islet cell tumor
Insulinoma
Mets to pancreas is from
RCC (MC), lung
Polysplenia is ass’d with
Left sided liver, absent GB, cardiac AbN
MC cause of splenic infarct
Bacterial endocarditis
What is Ram’s horn sign
Blunting of antral fornices with progressive tapering from antrum to pyloris
MC ass’d with horseshoe kidney
Ureteropelvic junction obstruction
Calcifications in the renal cyst are b9 or malignant
usually b9
Def parapelvic and what is an abscess from anteriorly and posteriorly
From renal parenchyma, expands into the renal sinus. Abscess from pancreatitis (ant) and osteomyelitis (post)
Def Peripelvic cyst and what is an abscess from
From sinus structures, likely lymphatic in origin. Abscess from renal inflammatory disease
Def Perinephric cyst
Beneath the renal capsule (can contain a urinoma)
Def Medullary Cystic Kidney Dz
Small kidneys, multiple cysts in the medulla, no calcifications, no cortical cysts
MC form of cystic kidney dz
Adult (AD) PKD
Does ADPKD have cyst wall Ca
Yes, commonly
MC subtype of RCC
Clear cell (seen in VHL pts, bilaterally)
DDx for enhancing renal lesions on MR
RCC, oncocytoma and AML
AML: Content, association and Calcification present(/)
fat, smooth muscles and blood vessels
Tuberous sclerosis
No Calcification
MC benign and malignant renal pelvis tumor
Papilloma and TCC
Corkscrew Ureter is typically used to describe what
TB strictural ureter
MC renal fungal infection
Candidiasis
MC composition of renal calculi
Calcium calculi
Staghorn calculi is made of what commonly
Magnesium Ammonium Phosphate
3 causes of medullary calcinosis
HPT, renal tubular acidosis and medullary sponge kidney
What is the Whitaker test for
Pressure flow study for ureteral obstruction or resistance in upper urinary tract
Cobrahead appearance is with what condition
Ureterocele
MC cause of urethral stricture in males
Gonococcal (MC in bulbopenile urethra)
What is Ormund dz
Idiopathic retroperitoneal fibrosis
90% of retroperitoneal tumors are b9 or malignant
Malignant
MC loc of extraadrenal pheochromocytoma
Organ of Zuckerkandl (proximal to the aortic bifurcation)
Adrenal hemorrhages are more common in neonate or adult
Neonate
Hyperaldosteronism is AKA and D/t
Conn disease and 75% adenoma, 25% hyperplasia
Prostate CA on T2
Low T2 SI with normal high T2 SI surrounding. Found in the posterior aspect
Ass’d with seminal vesicle cyst
Renal agenesis
MC side of varicocele
Left (90%)
MC cause of swollen testicle
Hydrocele
Loc of scrotal pearl
Ca loose body b/w tunica vaginalis membrane
MC testicular CA in young vs old
Germ cell (Seminoma) and lymphoma
What is the precursor to endometrial carcinoma
Endometrial hyperplasia
name of the cyst when a mature follicle fails to involute
Follicular cyst
Embryonic remnants of the broad lig forms what cyst
parovarian cyst
Polycystic ovarian Dz is AKA
Stein-leventhal syndrome
Cell type of ovarian cancer
Serous>Mucinous
Rokitansky nodules
Raised protuberance of hair, bone, teeth
MC ovarian tumor in young women
Dermoid
HU of the IVD
60-120
HU of the thecal sac
0-30
HU of the brain
40-50
MC area of HTN hemorrhage
basal ganglia (Perforating arteries)
Conditions that increase the incidence of aneurysm
Adult PKD, COA, collagen vascular disorders
Size of a giant aneurysm
> 25 mm
Capillary telangiectasia (MC loc, MR/CT)
Pons, CT is usually normal, MR shows increased contrast, low T2 with hemorrhage and it has normal brain matter interposed
Def lacunar infarct
Ischemia/infarction d/t small vessel occlusion - 25%
When does maximum edema occur following ischemia
3-5 days
MC loc of lacunar infarct
Thalamus, caudate, putamen, internal capsule
% of extradural hemorrage with a fx and imaging findings
95%, typically foun in the temporoparietal area
What tears in subdural hemorrhage?
Bridging veins (seen in infants from abuse)
Def subdural hygroma
CSF in subdural space after trauma to arachnoid layer
Occular bruit can be heard from a
carotid-cavernous sinus fistula
Brain tumor frequency in adults
Mets>hemangioblastoma>astro>lymph
Brain tumor frequency in kids
Astro>Medulloblastoma>Ependymoma
What type of edema spares the cortex/gray matter
Vasogenic
3 MC types of astrocytomas
GBM - 55% (grade 4)
Anaplastic - 30% (grade 3)
Low grade - 20% (grade 1/2)
Age/loc/rad of oligodendroglioma
30-50 YO
Cerebral cortex - Frontal lobe
Cystic with hemorrhage and calcifications