C 2.2: Primary Malignant Neoplastic Diseases Flashcards
what are malignant neoplasms
2 different origins
cancerous growths
epithelial
connective tissue
name for malignant neoplasms that have epithelial origin
carcinoma
or more commonly : adenocarcinoma
name for malignant neoplasms that have connective tissue origin
sarcoma
malignant neoplasms of which origin are most common
epithelial
what are 3 routes of spread for metastatic cancer
blood
lymphatics
direct invasion (cancer is in direct contact w/ another organ, facilitating spread)
proven causes of malignant neoplasms
exposure to carcinogens and radiation
risk factors for malignant neoplasms
viruses (HPV, Hep B and C)
family Hx
environment
hormones (HRT)
list some US signs that would be suspicious of malignancy
hypoechoic halo hypo, solid liver mass multiple liver masses high velocity signs/arterial waveform in a mass hypervascular lymphadenopathy
describe Hepatocellular carcinoma
what are its 3 forms
most common primary tumor of the liver occurring in the 6th decade of life
- focal solitary
- focal multiple
- diffuse infiltration
is HCC more common in W or M
Men
risk factors for HCC
alcoholic cirrhosis
Hep B and C
toxic metabolites (chronic exposure to chemicals)
metabolic disorders
which risk factor of HCC is the most common cause of the disease in the west
alcoholic cirrhosis
another name for HCC
hepatoma
HCC is specifically associated w/ which metabolic disorder
GSD - glycogen storage disease
symptoms of HCC
RUQ pain
weight loss
ascites
hepatomegally (= 15.5cm is norm, 17cm upper limit)
is weight loss in older patients always worrisome
yes
the disruption of the production of which protein produced by the liver may cause ascites?
albumin - controls osmotic balance
US appearance of HCC
often hypo w/ an anechoic halo
<5 cm
high velocity signal w/ doppler
portal/hepatic venous invasion
w/ HCC, is portal or hepatic vein invasion more common
portal
which lab values will be elevated w/ HCC
ALP AST ALT
and AFP
what % of patients w/ HCC will have increased AFP values
70%
3 benign abnormalities that cant be distinguished from the hyperechoic presentation of HCC
hemangioma
adenoma
lipoma
describe a hemangiosarcoma of the liver
what age grp does it typically effect
rare aggressive cancer w/ rapid spread
60-80yrs
hemangiosarcomas of the liver are associated w/ which risk factors
arsenic
thorotrast (old xray contrast)
PVC exposure (polyvinyl chloride)