CT shows a renal mass with calcifications associated with fat. What could the lesion be?
RCC
AML
teratoma
any of the above
Correct Answer :
A. RCC
tumors with calcification associated with fat are uncommon, but are almost always malignant RCC.
Related Questions
d. hypertension
. Metastatic tumors to the kidney are common from all of the following organs, EXCEPT:
lungs
thyroid
breasts
What is false concerning end-stage renal disease (ESRD)?
ARPKD accounts for 5% of ESRD in children
more than one-half of patients with ARPKD require kidney transplant before age 20 years
ADPKD is a common cause of ESRD
uncommonly, juvenile nephronophthisis causes ESRD in children
What is the likelihood that simple renal cysts increase in size and number over time?
never
unlikely
likely
always
Which of the following conditions carries the worst prognosis?
acquired cystic renal disease
juvenile nephronophthisis
medullary sponge kidney
bilateral multicystic dysplastic kidney
What is false concerning renal malignancy?
RCC occurs in < 5% of patients with tuberous sclerosis
in glomerulocystic kidney disease, renal tumors are typically solitary, large, with central necrosis
in Von Hippel-Lindau syndrome, renal tumors are frequently bilateral and multicentric
in acquired cystic disease, tumors are commonly bilateral, and metastatic in 15% of cases
d. all of the above
. What is the most common histologic subtype of renal sarcomas?
rhabdomyosarcoma
nephrosarcoma
leiomyosarcoma
What is the most powerful single predictor of oncologic outcomes in RCC cases?
margin status and grade
tumor size
tumor stage
the time interval between the tumor emergence and excision
d. CT can detect renal vein involvement in 82-95% of cases and vena caval involvement in 95-100% of cases
. In RCC, ipsilateral adrenal metastasis occurs in:
0.3 - 2%
2 - 10%
11 - 18%
What type of renal adenomas is a precursor to papillary RCC?
adenoma with clear cell
papillary adenoma
metanephric adenoma
none of the above
What is the proper terminology of a renal cyst with the following characteristics: well-marginated, anechoic, with thin visible back wall, positive posterior acoustic enhancement, no septations, and no calcifications?
hyperattenuating renal cyst
solitary renal cyst
uncomplicated renal cyst
focal renal cyst
On histological examination of a resected renal tumor, the presence of multiple mitochondria observed on electron microscopy is diagnostic for:
renal oncocytoma
multiloculated cystic nephromas
metanephric adenoma
adenoma with clear cell
What does determine the renal function status after partial nephrectomy of a single kidney?
the quality of the kidney and renal function prior to surgery
the quantity of vascularized parenchymal mass preserved after excision
the tumor
warm ischemia time
d. neurosarcoma
. What is false concerning targeted molecular therapy?
is a personalized medical therapy devised to meet each persons individual needs for cancer`s specifications
treats cancer by interrupting unique molecular abnormalities that drive cancer growth
some cancer types have different molecular targets
Fuhrmans grading system for renal cell carcinoma relies on:
nuclear size, outline, and nucleoli
cohesiveness and the degree of cellular atypia
chromatin structure and content of the interphase nucleus
multinucleation and mitosis
What is false concerning renal oncocytoma?
the central scar on CT or MRI, and the spoke-wheel pattern of vessels on angiograms are not specific to oncocytoma
calcification, necrosis, and hemorrhage are rare in oncocytomas
it is thought to arise from the basement membrane of proximal convoluted tubules
treatment is partial nephrectomy or tumor excision
What can NOT be a manifestation of a renal tumor?
right hydrocele
left varicocele
painless hematuria
hypertension
In renal mass(es), the main indication to take a renal biopsy is the suspicion of:
papillary RCC
renal metastases
renal oncocytoma
renal xanthogranuloma
What is (are) the risk factor(s) for developing simple renal cysts?
male gender
hypertension
renal insufficiency
all of the above
Which of the following conditions carries the best prognosis?
acquired cystic renal disease
juvenile nephronophthisis
medullary sponge kidney
bilateral multicystic dysplastic kidney
After radical nephrectomy for organ-confined RCC, what is (are) the recommended surveillance radiologic examination(s)?
chest X-ray and abdominal ultrasonography every 3 months for the first year, and then annually for 3 years
annual chest X-ray for 3 years
abdominal and chest CT every 6 months for the first year, and then annually for 3 years
no radiological examination required
Antenatal sonography is the diagnostic tool for the following condition:
glomerulocystic kidney disease
developmental cystic renal disease
Juvenile nephronophthisis
medullary cystic kidney disease
d. renal vein thrombi can be resected after incising the vein between 2 vascular clamps
. Manifestations of paraneoplastic syndrome associated with RCC include all of the following, EXCEPT:
anemia and erythrocytosis
hepatic dysfunction and elevated human chorionic gonadotropin levels
hypocalcemia
Regarding simple renal cysts, fluid attenuation on non-contrast CT series is:
< - 10 HU
< - 20 HU
< 10 HU
< 20 HU
What is the treatment of a 3-cm renal mass suggestive of RCC adjacent to a huge renal cyst?
cyst aspiration and sclerosis
partial nephrectomy
endoscopic marsupialization and fulguration of the cyst
administration of TKIs
After radical nephrectomy, what is the 5-year survival rate for stage I RCC?
80%
85%
90%
95%
The etiology of renal cysts includes all of the following, EXCEPT:
autosomal dominant polycystic kidney disease (ADPKD)
developmental cystic renal disease
inherited cystic renal disease
systemic disease with associated renal cysts
What is true regarding cancer incidence in renal cystic diseases?
is > 90% in Bosniak type IV renal cysts
in patients receiving renal transplants for polycystic kidney disease is 48% higher than that expected in the general population
all of the above
simple renal cysts might turn malignant in < 4% of cases
d. 19 - 26%
. What is false regarding radical nephrectomy operation?
nodal involvement doesn`t influence prognosis
renal artery should be ligated before the vein to avoid kidney ballooning
cardiopulmonary bypass with deep hypothermic circulatory arrest is performed in patients with supra-diaphragmatic tumor thrombi
The likelihood of malignancy in category IIF (indeterminate) renal cysts is:
20%
30%
40%
50%
d. melanoma
. The second most common RCC subtype is:
collecting duct b. clear cell
papillary
chromophobe