Pulmonary Malignancies Flashcards
RF for pulmonary malignancies
smoking/ second hand smoke- synergistic with all other RFs
radon, radiation
asbestos- more bronchogenic cancers than mesothelioma
Presentation of pulmonary malignancy
There are no early symptoms Common- cough, hemoptysis, weight loss (cacexhia), chest pain, metastasis SVC syndrome Pancoast tumor paraneaplastic syndrome
SVC- syndrome
tumor blocks SVC drainage from head –> facial redness and swelling, HA, cyanosis, dilation of veins
Pancoast tumors
tumors in lung apices- affects nerves
brachial plexus- pain in arm or shoulder
recurrent laryngeal nerve- hoarseness of voice or vocal paralysis
sympathetic ganglia- Horners syndrome (Ptosis, Miosis, and Anhydrosis)
Paraneaplastic syndromes
SCLC- cushing syndrome (ACTH), SIADH
SqCC- hyperparathyroidism (hyperCa and Fractures)
Carcinoid- serotonin syndrome
Pulmonary Malignancy- Dx
CXR- coin lesions and compare to old CXR
CT scan- get a better look, nodal mets
Sputum cytology- look for malignant cells in sputum
Biopsy-
-bronchoscope for central tumors
- mediastinoscope for metastases to nodes
- percutaneous CT guided for peripheral tumors
Thoracotomy or wedge resection for non diagnostic biopsy
How are bronchogenic carcinomas divided
small cell vs non small cell
What is the key difference between SCLC and NSCLC
Treatment modality
SCLC will mets more quickly so is not amenable to Surgery or radiation, so tx with chemo
NSCLC- tx with surgery or radiation
Squamous cells carcinoma (SqCC)- location and size
Central and large
SqCC- RF
99% smoking related
SqCC- paraneoplastic syndrome
hyperparathyroidism
inc PTrH, hyperCa, and fractures
SqCC- microscopy
Normal microscopy for SqCC= Squamous cells, keratin pearls, intracellular bridges
SqCC- Tx
surgery or radiation
Adenocarcinoma- location, size
peripheral, small coin lesion
Adenocarcinoma- RF
Most common LC or non smokers
75% smoking associated
Adenocarcinoma- tx
surgical resection or radiation
Adenocarcinoma- bronchioalveolar subtype
spreads along the alveoli using the BM as scaffolding so its not a solid mass but rather looks like diffuse pneumonia on CXR
Large cell carcinoma (LCC)- location, size
central or peripheral
large
this is a wastebasket categories for other tumors
LCC- RF
99% smoking related
LCC- Tx
surgery or rads
Small cell carcinoma (SCLC = small cell lung cancer) = oat cell carcinoma- location
central
SCLC- mets
metastasizes early normally via hematogenous route
brain is common place it goes- not from TA notes
SCLC- RF
99% smoking related
SCLC- paraneoplastic syndromes
Cushing syndrome (ACTH) SIADH
SCLC- microscopy
small dark cells with little cytoplasm
sheet like growth
SCLC- tx
chemo
Brochogenic carcinomas
SqCC
Adenocarcinoma
LCC
SCLC
Bronchial carcinoid tumor- what is this
low grade tumor of neuroendocrine origin
Bronchial carcinoid tumor- where does it originate
Originates in the bronchi where neurosecratory cells are found
This may lead to obstruction
Bronchial carcinoid tumors- paraneaplastic syndrome
Serotonin syndrome= flushing, hyperthermia, diaphoresis, tachypnea, dilated pupils, seizure, myoclonus)
Seratnonin syndrome and seratonin metabolism
Seratonin is metabolized in the liver
carcinoid tumors of the colon (which may produce seratonin) will not cause seratonin syndrome- b/c of first pass metabolism
Bronchial carcinoid tumor- microscopy
uniform cells
neurosecratory granules on EM
Pulmonary hamartoma- what is this
slow growing, benign growth of cartilage
remove to differentiate it from cancers
Bronchial carcinoid tumor- prognosis
very good (not on TA notes)
bronchial carcinoid tumor CXR
calcified region= granuloma (not on TA notes)
Mets to lungs- MC, lesions
Breast is MC tumor to mets to lungs
multiple lesions
Lymphangytic carcinoma
types of metastasis only seen by microscopy not on X ray
little plugs of tumor in lymphatics
Malignant mesothelioma- what is this
cancer of the pleura
Malignant mesothelioma- prognosis
always fatal due to SOB and tamponade
Malignant mesothelioma- RF
almost always assoc with asbestos
Malignant Mesothelioma- gross appearance
rind like substance around organs
1st lung –> heart/ mediastinum
Malignant mesothelioma- microscopy
psommoma bodies
Seratonin Syndrome- classic triad (from up to date)
mental status changes,
autonomic hyperactivity,
neuromuscular abnormalities