Midterm - Radiology Flashcards
three compartments for thoracic neoplasms
lung, pleura, mediastinum
use a CT to determine the?
extent of disease LOCALLY
use a PET-CT to determine the?
whole body stage of a disease (are there mets??)
when to use an MRI?
suspect soft tissue tumor (pancoast, mesothelioma)
three primary cancers of the lung
adeno, squamous, BAC (ACIS/MIC)
most common neoplasm of the pleura
mets, fibrous tumor (mesothelioma are RARE)
four T’s of the anterior mediastinal mass
thymoma, thyroid cancer, teratoma, terrible lymphoma
primary lung cancer presenting as mediastinal mass
small cell
which lung cancer presents centrally?
squamous cell
if you see well defined heart margins on a CXR, then the mass is?
posterior, often lower lobe
lung cancers are most often in what lobe?
upper lobes
BAC has what characteristic CT finding?
ground glass opacity
what does BAC look like on a PET-CT?
“warm” because it is slow growing (not as bright as other cancers)
collapsed lobes are most frequently from cancers originating in what part of the lung?
central masses
“snow storm” on CXR suggests?
stage 4 metastatic cancer, probably adenocarcinoma
cavitary lesions suggest metastases from what type of cancer?
likely head/neck if smoker, cervical if female non-smoker
what looks like a ball under a rug, causing sharp defined borders on CXR?
fibrous tumor of pleura
most common metastasis to pleura?
lung cancer
if the trachea is displaced and there is a dense soft tissue mass in the upper anterior mediastinum, it is probably?
thyroid cancer
