Block 31 Week 5 Flashcards
pneumothorax =
- air in the pleural space
spontanous pneumothorax?
- spontaneous pneumothorax: presence of air in pleural space in absence of trauma or intervention
managemtn options of a pneumothorax?
primary SP?
- no prev pulm disease
- some have emphysema on CT
Secondary spont pneumothorax?
- established chronic lung disease
- 50 yrs or older w smoking history
conservative management of
- if no symptoms, and good lungs - primary spont pneumothorax
- outpatient review every 2-3 days
- CXR to monitor resolution
surgical referral criteria for a pneumothorax
spontaneous secondary pneumothorax?
- conservative management but as inpatient
- CXR to monitor
needle aspiration ?
- mostly for PSP, outcomes for SSP not great
- recommended for people with minimal symptoms
Heimlich valve?
- one way valve
- plastic tube connected to chest wall, air comes through the tube
- plastic collapses when breathing in so air can’t come back in
Ambulatory management of a pneumothorax?
- PSP only
- can go home w this
- more freq follow up due to risk of valve problems
chest drain requires?
- daily inpatient review
- remove drain when resolved
chance of reoccurance of a pneumothorax?
- PSP - 30% chance
- recurrence after surgical intervention is v low
what means that thoracic surgery is required at initial presentation?
- tension pneumothorax
- high risk occupations
prevention/ pleurodesis of pneumothorax?
- during the first ep if patient sig decompensated i.e. COPD
- not for young people with normal lungs bc risk of fibrosis
surgical procedures for a pneumothorax?
- VATS for chemical pleurodesis
- resection of lung parenchyma to stop air leak
advice for a pneumothorax?
- smoking cessation
- can fly 7 days after full resolution
- diving discourgaged permanently
Pleural effusion?
- fluid between the pleura
- cancer, HF, infection
- TB
- PE
bilateral vs unlateral pleural effusion?
- bilateral - usually due to systemic diseases
- unilateral - usually a local cause
pleural effusion history?
- asbestos exposure/ occupational histiry
- medications - tyrosine kinase inhibitirs
Ix for a pleural effusion?
- XR, US, CT
- pleural effusion aspiration
- pleural biopsy
pleural effusion caused by TB?
- pleural fluid high in adenosine deaminase +/- inteferon gamma
- high prevalence area
Pleural biopsy?
- for thickened pleura
- mesothelioma
pleural infection - empyema?
purulent effusion - requires drainage
intrapleural TPA?
- for failed drainage
- use alteplase
- streptokinase should not be used
Mesothelioma?
-Mesothelioma is a cancer of the mesothelial layer of the pleural cavity that is strongly associated with asbestos exposure
- can present as a painless pleural effusion
- latent period of 30-40 yrs
normal chest X ray?
looking at cxr?
- left hilum is higher than the right
- right D higher than left
pleural effusion CXR?
- fluid doesn’t build up like a line it builds up like a crescent
- could be from bleeding after a fall and the patient is on an AC
asthma involves (3)?
- Reversible airflow limitation
- Airway hyperresponsiveness
- Inflammation of the bronchi
early phase of asthma?
- inhalation of allergens leads to type 1 hypersensitivity reaction in the airways
- Sensitisation occurs during theallergen exposure causing the release of IgE antibodies from plasma cells.
- IgE bind to high affinity receptors on mast cells.
- Subsequent exposure to antigens cause mast cell degranulation and histamine release.
The mediators relased in the early phase of asthma cause…
- These mediators cause smooth muscle contraction and bronchoconstriction whilst inflammation contributes to airway obstruction.
late phase of asthma?
- recruitment of inflammatory cells e.g. T cells
- overtime the airways lay down fibrous tissue
- causing airway remodelling and leads to fixed airway obstruction - irreversible narrowing
Sx of asthma?
- Cough(may be worse at night)
- Dyspnoea
- Chest tightness
signs of asthma?
- Expiratory wheeze - polyphonic
- Prolonged expiratory phase
- Tachypnoea
- harrison’s sulcus
harrison’s sulcus?
a groove at the inferior border of the rib cage that may be seen in children with chronic severe asthma.
signs of resp failure that can occur in a severe asthma attack:
- Tachypnoea
- Tachycardia
- Inability to complete sentences
- Exhaustion
- Reduced respiratory effort
- Silent chest
- Altered conscious level
Asthma exacerbation - moderate?
PEFR > or equal to 50-70%
Severe asthma exacerbation PEFR?
33-50%
life threatening asthma exacerbation PEFR
<33%
near fatal asthma exacerbation?
raised PaCO2 or requires mechanical ventilation with raised inflation pressures
Asthma exacerbations summary table?
Spirometry results for an obstructive lung disease?
- FVC:may be normal but often reduced due to air trapping.
- FEV1:reduced.
- FEV1/FVC:< 70%.
PEFR values in asthma?
- Asthma demonstrates characteristic variability on PEFR diaries
asthma FeNO level?
- > 40 supports diagnosis of asthma
inhaler types - beta agonists?
- Short-acting beta-agonists(SABA): Salbutamol
- Long-acting beta-agonists(LABA): Salmeterol
Steroid inhaler for asthma?
Beclomethasone
LABA-ICS inhaler in asthma?
Seretide (salmeterol/fluticasone)
Stepwise management of asthma?
- 1) ICS - regular preventer
- 2) add LABA - salmeterol: can be MART (combined inhaler)
- 3) increase LAB or add leukotriene receptor antagonist
- 4) referral
Asthma chronic management summary?
ICS -> add LABA -> inc LABA or add montelukast
Acute asthma management ?
- oxygen
- steroids - prednisolone or IV hydrocortisone
- ipatropium bromide - for patients with severe or life-threatening asthma not responding to nebulised salbutamol.
second line therapies in the management of acute asthma?
- Mg sulfate IV
- beta 2 agonist infusion
- aminophylline
BTS asthma pathway
1) SABA
2) ICS
3) laba
chronic bronchitis =
- Chronic bronchitis: chronic productive cough for at least 3 months over two consecutive years.
Emphysema =
- emphysema: abnormal airspace enlargement distal to terminal bronchioles with evidence of alveoli destruction and no obvious fibrosis
aetiology of COPD?
- 90% of cases associated with smoking but only 10% of smokers develop it
- alpha-1 antitrypsin deficiency - AR condition
Pack years =
(number of cigarettes smoked per day, divided by 20, multiplied by the number of years smoked)
chronic bronchitis vs asthma?
- characterised by chronic inflammation with neutrophilic infiltration, CD8+ T lymphocytes and macrophages.
- This differs from asthma, which has a predominant eosinophil infiltration with CD4+ T lymphocytes.
CB leads to (4)?
- Goblet cell hyperplasia
- Mucus hypersecretion
- Chronic inflammation and fibrosis
- Narrowing of small airways
bullae formation in COPD?
- permanent enlargement of airspaces distal to the terminal bronchiole
- Destruction of the lung parenchyma results in a reduced area for gas exchange and chronic hypoxia.
- loss of elastin within alveoli leads to collapse and dilatation and bullae formation - alveoli dilate and may eventually join with neighbouring alveoli forming bullae.
Cor pulmonale =
- right ventricular impairment secondary to COPD
what happens in cor pulmonale?
- Chronic hypoxia causes vasocontriction of pulmonary arteries, which leads to elevated pulmonary arterial pressure.
- The chronic elevation of pulmonary arterial pressure subsequently leads to right heart failure.
how does cor pulmonale present?
- raised jugular venous pressure,
- cyanosis,
- ankle oedema,
- parasternal heave
- hepatomegaly.
COPD symptoms?
- Chronic cough: usually productive
- Sputum production
- Breathlessness: usually on exertion in early stages
- Frequent episodes of ‘bronchitis’: usually in the winter
- Wheeze
Sigsn of COPD - respiratory?
- Dyspnoea
- Pursed lip breathing:(prevents alveolar collapse by increasing the positive end expiratory pressure)
- Wheeze
- Coarse crackles
signs of copd - cardiac?
- Loss of cardiac dullness:due to hyperexpansion of lungs from emphysema
GI sign of COPD?
- Downward displacement of liver:due to hyperexpansion of lungs from emphysema
Signs of COPD retention?
- Drowsy
- Asterixis
- Confusion
signs of CP?
- Peripheral oedema
- Left parasternal heave: caused by right ventricular hypertrophy
- Raised JVP
- Hepatomegaly
Severity of breathlessness =
- MRC dyspnoea scale
Symptoms of an acute exacerbation of copd
diagnosis of COPD?
- spirometry - FEV1/ FVC <70%
- post-bronchodilator ratio of <0.7 consistent with diagnosis of COPD
Distinguishing asthma vs COPD?
- As part of spirometry,reversibility testingmay be completed that assesses spirometry measurements following inhalation of a bronchodilator (e.g. beta-agonist).
- COPD is characterised by limited reversibility post-bronchodilator, which helps differentiate it from asthma.
- Reversibility is a hallmark of asthma.
Features supportive of COPD (versus asthma) include:
- Smoker or ex-smoker
- Symptoms in older adults(> 35 years old)
- Chronic productive cough
- Persistent/progressive breathlessness
- Night time waking with symptoms uncommon
- Variability uncommon(diurnal or day-to-day)
COPD staging
Ix of COPD?
- pulse oximetry
- ABG - if hypoxia or hypercapnia suspected
- ECG(if cor pulmonale suspected)
Bloods for COPD?
- Full blood count: important to assess for anaemia and polycythaemia
- Alpha-1 antitrypsin levels
CXR for COPD?
- Hyperexpanded
- Flattened hemidiaphragms
- Hypodense
- Saber-sheath trachea
CT scan for COPD?
- if alt diagnosis suspected - bronchiectasis, fibrosis
- lung cancer suspected
- echo if CP suspected
Management of COPD - lifestyle?
smoking cessation
- NRT
- smoking cessation services
vaccination
- seasonal influeza vaccine and pneumoccal vaccine
Pulm rehab in COPD?
- MDT programme
- long term lung conditions like COPD
- involvesexercise training, health education, and breathing techniques
- Nutritional education and behavioural techniques are also utilised.
Self management plans in COPD?
- helping patients manage their symptoms including how to manage exacerbations
- education + providing patients with a rescue pack pf ab and steroids
MRAs in COPD?
- prevent activation of muscarinic receptors by ACh
- prevents airway smooth muscle contraction and causes bronchodilation.
LABA?
salmetrol
SAMA =
ipatropium
LAMA =
tiotropium
ICS =
beclomethasone
trimbow inhaler =
formoterol/glycopyrronium/beclometasone
LABA-LAMA-ICS
stepwise management of COPD?
- 1: SABA or SAMA
- 2) LAMA + LABA if no evidence of steroid responsiveness
- or LABA + ICS of steroid responsiveness if asthmatic features
- 3) triple therapy (LABA + LAMA + ICS)
Oral therapies in COPD - theophylline?
- theophylline - some bronchodilator action through inhibition of phosphodiesterase.
Oral therapies in COPD - mucolytics?
- mucolytics - can be used in patients with a chronic productive cough to reduce frequency of cough and sputum production (e.g. carbocisteine).
oral therapies in COPD - ab?
- antibiotics - for acute exacerbations. May be used prophylactically e.g. azithromycin
surgical intervention for COPD?
- Lung reduction surgery
- Bullectomy
- Lung transplantation
Ix for COPD?
- CXR
- ABG
- ECG
- bloods - FBC, U&Es, CRP
- cultures - blood if pyrexial
- theophylline levels
Managing acute COPD exacerbations involves (4)
- oxygen
- bronchodilators
- steroids
- ab
COPD AE - oxygen?
- Venturi mask
COPD AE - bronchodilators?
- usually as nebulisers
- salbutamol: 2.5mg nebulised
- ipatropium (muscarinic antagonist)
steroids in COPD AE?
prednisolone 30 mg once daily should be given for 5 days unless there is a significant contraindication
Ab in COPD AE?
- typically doxyclcine or co-amoxiclav
complications of COPD?
- Respiratory failure
- Pneumonia: often recurrent
- Pneumothorax: rupture of bullous disease
- Polycythaemia or anaemia
- Depression
Resp symptoms pathway
NSCLC types?
- Adenocarcinoma
- squamous cell
- large cell
SCLC?
- undifferentiated
- usually in the central airways
- 10-20% of lung cancer
Which type of LC is rare in non smokers?
SCLC
adenocarcinomas?
- Malignant epithelial neoplasm
- Gland formation
adenocarcinomas are ? tumours
peripheral
which type of cancer is the most common in non smokers?
- adeno
- they make up 40% of LC overall
squamous cell cancer?
- plemorphic squamous cells
- Keratin (individual cells or keratin pearls) and intercellular bridges
SCC arise in ?
- arise centrally in larger bronchi
- often metastasizes to locoregional lymph nodes - paticularly the hilar nodes
- usually cavitates
initial Ix of LC?
- CXR
- spirometry
- bloods - BCP and clotting
General features of LC?
- tiredness
- weight loss
- decreased appetite
- fever
Resp symptoms of LC?
- cough
- haemoptysis
- breathlessness
- wheeze
- stridor
- chest pain
Hypercalcaemia from LC?
non small cell( Squamous)
Small cell cancer paraneoplastic syndromes?
- SIADH
- ectopic ACTH
- eaton lambert
neuro neoplastic syndromes?
- Horners- Pancoast tumour
- Ptosis, miosis, anhydrosis
- fitting - brain mets and low sodium
examination findings in LC?
- wheeze
- dullness - effusion
- signs of SVCO
- lymph nodes - neck or axilla
LC RF?
- Smoking
- Asbestos
- Radon Gas
- Family History
Ix of LC?
- CXR
- CT
- PET-CT
- bronchoscopy
- EUS
risks of bronchoscopy?
- bleeding
- infection
- pneumothorax
- air embolus
EBUS?
- similar to bronchoscopy
- under sedation
- minimally invasive
Risks of EBUS?
- bleeding
- infection
- pneumothorax
mediastinoscopy?
- gold standard
- large biopsies
- invasive
- under general anaesthetic
other signs of lung cancer?
- an effusion
- deviated trachea
- enlarged liver due to mets
- cachexia
- signs of SVCO
Metastatic LC?
- lymphadenopathy
- effects of spread to brain, bone, adrenal and liver
Mets LC acronym?
Brain
Bone
Adrenal
Liver
Lung - other
importance of obtaining a histological diagnosis?
- to distinguish primary from secondary cancer
- molecular testing to ascerrtain suitability for targeted treatments e.g. TKIs
lingula atelectasis
pleural effusion from LC
meniscus from fluid line
TNM staging - N
M staging
EGFR Mutation?
- freq of 10-15% in NSCLC
- sensitive to small molecule tyrosine kinase inhibitor - TKI - erlotinib, gefitinib
pleural effusion =
- imbalance between the formation and removal of pleural fluid
transudative pleural effusion ?
- ↑ Hydrostatic pressure
- ↓ Colloid osmotic pressure
exudative pleural effusion?
- ↑ Pleural permeability.
- ↓ Absorption of pleural fluid by lymphatics
what causes transudative pleural effusion?
- congestive cardiac failure
- liver cirrhosis
- nephrotic syndrome
exudate pleural effusion causes?
- infection
- PE
- neoplastic
- TB
- asbestos related diseases including mesothelioma
malignant pleural effusion?
- metastatic LC
- MM
- Metastatic (non-lung) cancer - kidney, breast, CRC, oesophagus, pancreas
imaging the pleura
- CXR
- thoracic US
- CT/ PET CT
- MRI
Diagnostic pleural aspiration ?
- indicated for pleural effusions that have no clear cause or do not resolve with appropriate treatment e.g. diuretics
straw coloured pleural effusion?
non specific
blood stained aspirated pleural effusion =
malignancy or PE
haemorrhagic aspirated pleural effusion =
haemothorax
frank pus in the pleural effusion?
empyema
pH indicating empyema?
<7.2
malignant pleural effusion?
- common causes: bronchogenic carcinoma, mesothelioma, metastatic disease
high polymorphs in pleural effusion?
empyema
high lymphocytes in pleural effusion?
Lymphoma, TB, RA
high oesinophils in pleural effusions?
Haemothorax, Pneumothorax
glucose in pleural effusion?
- <3.3mmol in
- empyema
- RA
- SLE
- malignancy
amylase in pleural effusion?
- pancreatitis
- oesophageal perf
Adenine deaminase in PE?
- TB
malignant pleural effusion management ?
- chest drain and talc pleurodesis
- Medical thoracoscopy and talc pleurodesis
- Surgical VATS
- Indwelling pleural catheter
exudative stage of pleural effusions?
- sterile pleural fluid accumulates in pleural space
- Pleural fluid originates in lung interstitial spaces and in capillaries of visceral pleura due to increased permeability.
- effusions resolve with ab therapy
fibropurulent stage of pleural effusions?
- Bacterial invasion of the pleural space occurs → accumulation of neutrophils, bacteria and cellular debris
- Deposition of fibrinà loculations
- Pleural fluid pH <7.2 , glucose levels ↓,
organization stage of pleural effusions?
- fibroblasts grow into the exudates from both the visceral and parietal pleural surfaces
- They produce an inelastic membrane called pleural peel.
- Thick pleural fluid
Ix of pleural effusions?
- diagnosis: CXR, thoracic US, CT
- Blood cultures, pleural fluid sampling/drainage (chest drain insertion)
PE - intrapleural thrombolytic agent?
rtPa and Dnase
Spontaneoys pneumothorax
pneumothorax =
- air in pleural cavity
- Primary spontaneous pneumothorax
- Secondary pneumothorax
- Iatrogenic pneumothorax
safe triangle in a pneumothorax
XR of a pneumothorax?
- silhouette sign - normally recognisable tissue boundaries are lost
- lobar collapse - the air in the alveolar tissue makes the lungs less dense than the soft tissue structures that lie adjacent
cancer clinical nurse specialists?
- see people before, at the time of and after diagnosis
- provide continuing support
- facilitate communication between the secondary care team (including the multidisciplinary team), the person’s GP, the community team and the person with lung cancer
- help people access advice and support whenever they need it
lung cancer referral criteria?
urgent CXR for suspected LC?
How many new LC cases a year?
- 50k new cases every year, 35k deaths/ year
- most common cause of cancer deaths per year - 21%
LC is the ? most common cancer in the UK
3rd
proportion of LC cases caused by smoking?
80%
promoting quitting tobacco?
- raising public awareness of harm caused by smoking and second hand smoking
- provide info on how people who smoke can reduce risk of illness and death by using 1 or more medicinally licensed nicotine containing products
- Provide information on using medicinally licensed nicotine-containing products
- awarness of local smokeless tobacco sensation
excisional biopsy =
When an entire lump or suspicious area is removed
incisional biopsy =
orcore biopsysamples a portion of the abnormal tissue without attempting to remove the entire lesion or tumor.
FNA?
- provides cellular specimen
- freq used for carcinomas
core biopsy?
- allow for tumour structural examination
- frequently used for soft tissue sarcoma
- 85-95% accuracy in diagnosis
incisional biopsies?
- small surgical incision carefully placed to access tumour without contamination of critical structures
excisional biopsy?
- small superficial soft tissue masses
process of biopsy?
- samples are received in a fixative solution which halts the autolysis process
- Processing” is the term used to describe the removal of water from tissues and its
- gradual replacement with molten paraffin wax.
- tissues embedded in a wax block
- cutting sections
Stage 1 NSCLC Tx?
- Has not spread to lymph nodes or distal organs
- Surgery to remove part or all of the lung
- May have chemotherapy, immunotherapy or targeted cancer drugs after
Stage 2 NSCLC Tx?
*Some may have neoadjuvant therapy prior to surgery
*Surgery to remove part or all of the lung
* May have chemotherapy combined with immunotherapy or targeted drug Osimertinib (if tumour is positive for EGFR mutation)
drug for EGFR positive LC?
Osimertinib
Stage 3 NSCLC Tx?
*Neoadjuvant therapy
*Surgery to remove part or all of the lung
* Adjuvant treatment
stage 4 NSCLC Tx?
- Control cancer as long as possible and help to reduce symptoms
LC referral guidelines
pulm complications of cocaine toxicity?
- Pulmonary complications of cocaine toxicity include pulmonary edema, pulmonary hemorrhages, pulmonary barotrauma, foreign body granulomas, cocaine related pulmonary infection, asthma
cannabis use and LC?
- cannabis use increases risk of lung cancer - smoking marijuana leads to 4x the deposition of tar compared to cigarette smoking
- lack of research on link between cannabis and lung cancer though
stopping smoking - support?
- behavioural support
- medically licensed products:
- bupropion
- NRT
- vareniciline
- nicotine containing e-cigarettes
- telephone quitlines
methods of preventing uptake of smoking ?
- national campaigns to prevent uptake in young people under 18
- denormalise smoking - news articles, posters, brochures, digital media
- school based interventions - smoking prevention activities
- peer led interventions in school
side effects of chemo?
- N&V
- fatigue
- hair loss
- peripheral nerve damage
- sore mouth and throat
side effects of radiotherapy?
- reddening/ darkening of skin
- tiredness
- breathlessness and cough
- difficulty swallowing
- chest pain/ discomfort
side effects of surgery for LC?
- pneumothorax
- pain
- DVTs
- breathing problems
apical lung tumours (Pancoast tumours)?
- typically NSCLC
- compression of brachial plexus
- produce upper limb paraesthesia or weakness
- Horners syndrome - ptosis, miosis, facial anhidrosis
Pancoast tumours - compression of (3)
- phrenic nerve
- recurrent laryngeal
- SVC
PT - phrenic nerve compression?
- Compression on the phrenic nerve, leading toparalysisof theipsilateral hemidiaphragm, can cause further respiratory compromise.
PT - reccurent laryngeal nerve compression?
hoarse voice
SVCO
- Compression of the superior vena cava(SVC obstruction) can cause facial plethora
- prominence of facial and/or upper limbs veins, and respiratory compromise (Pemberton’s sign).
PNS - PTH?
- Squamous cell lung cancers can produceparathyroid hormone-related peptide(PTHrP),
- which can mimic the function of parathyroid hormone (PTH), leading to clinical featuresofhypercalcaemia.
PNS - osteoarthropathy?
Adenocarcinoma can causehypertrophic osteoarthropathythat can present withclubbing,joint pain, andbone pain.
PNS - ADH?
Small cell lung cancers can produceanti-diuretic hormone(ADH) that can lead tosyndrome of inappropriate antidiuretic syndrome secretion(SIADH), resulting inhyponatraemia.
PNS - cushings?
- SCLC -> ACTH production -> Cushings
Lambert-Eaton syndrome?
- Antibodies against thepresynaptic calcium channel of the neuromuscular junctioncan also be produced by small cell lung cancers,
- resulting in aLambert-Eaton syndrome, which can present withproximal muscle weakness.
aetiology of LC?
- smoking - 80-90% of cases
- asbestos exposure - strongly associated with mesothelioma but also linked to adenocarcinoma of the lung
- radon gas - occurs from uranium
NSCLC form ?% of LC
80-85%
most common form of LC?
Adeno - around 38%
which type of cells are affected in adenocarcinomas?
- musus secreting
- tends to occur in lung peripheries
second most common form of LC?
Squampus cell carcinomas
SCC?
- typically occurs in the central parts of the lungs
- can present w pneumonia secondary to obstructed bronchus
most common cause of SCC?
smoking
histopathology of SCC?
- histopathology classicly shows kertain
Large cell cancer?
- undifferentiated neoplasms
- account for 5% of lung cancers
- metastasise early
SCC tend to metastasise?
late
SCLC nature?
- fast doubling time, aggressive nature and early mets
type of cell affected in SCLC?
- SCLC is a cancer of the APUD cells, a neuroendocrine cell found in the lungs.
- It occurs almost exclusively in smokers.
LC presentation
- Freq asymptomatic
- when symptomaic, cough, malaise and weight loss predominate
- haemoptysis
- features of SVC obstruction or paraneoplastic syndrome
What can you get w LC?
- Hypertrophic pulmonary osteoarthropathy(HPOA)
- Signs of pleural effusion
signs of pleural effusion?
- reduced breath sounds
- reduced VF
- stony dull percussion
SVCO?
- A tumour may cause compression of the superior vena cava.
- This causes engorgement of vessels in the neck and face, shortness of breath and a ‘fullness’ of the head.
Pancoast tumour ?
- tumour of the pulm apex
- may spead to brachial plexus, cervical sympathetic trunk and stellate ganglion, subclavian vein
mets from LC?
- Bone: bone pain, raised ALP
- Brain: focal and non-focal neurology
- Liver: abnormal LFTs
- Adrenal glands: though a common site of metastasis, normally asymptomatic
hypercalcaemia in LC can be from?
- can be due to bony mets or tumour secretion of Parathyroid hormone-related protein (PTHrP) or Calcitriol
Hypercalcaemia mneumonic?
- stones - renal calculi
- bones - bone pain
- groans - abd pain
- thrones - polyuria
- psychiatric moans - signs if altered mental status
lambert eaton syndrome characterised by?
both proximal and ocular muscle weakness.
hypertrophic osteoarthropathy?
- This syndrome is characterised by clubbing and periostitis.
- It features a symmetrical, painful arthropathy affecting the distal joints.
2 week referral for LC
- unexplained haemoptysis and aged over 40
- Patients with evidence of SVCO or stridor require an urgent referral and emergency admission to hospital for further review.
Bloods in LC?
- Deranged liver function tests (LFTs) should prompt suspicion of liver metastasis.
- Calcium (measured in the bone profile) can be elevated in patients with malignant hypercalcaemia or bony metastasis.
- FBC
- U&Es
- LFTs
- Bone profile
Signs of lung cancer on CXR include:
- Focal lesion
- Pleural effusion
- Widened mediastinum (indicative of enlarged nodes)
CT findings in LC?
- Typical findings are a solitary pulmonary nodule with irregular or spiculated (looks like spikes coming out of the surface of the lesion).
- It may also show lymph node involvement or invasion.
Other scans in LC?
- PET-CT - help w staging
- CT/MRI brain - to exclude cerebral mets
Bronchoscopy in LC?
- bronchoscopy - It allows for visualisation of the airways and any lesions that may be impinging or invading them.
- It also allows for washings/brushings to be taken for cytological analysis
Lung function tests in LC?
- allows clinicians to estimate if the patient will have sufficient residual lung capacity following a wedge resection (a wedge of the lung with tumour removed), a lobectomy (an entire lobe is removed) or pneumonectomy (removal of a whole lung).
- This is of particular importance in patients with pre-existing lung disease (e.g. emphysema) as they will already have reduced lung function.
different staging systems for LC?
- NSCLC - TNM
- SCLC - VALSG
management of LC?
- surgical resection
- VATS - key-hole procedure, requires deflation of the lung
- thoracotomy - large incision, open procedure
Radiotherapy in LC?
- It can be used with radical intent (i.e. potentially curative) as an alternative to surgery in early-stage NSCLC.
- It can also be used as a combination with chemotherapy (that can follow surgery) or alone for both NSCLC and SCLC.
Chemotherapy in LC?
- can be used for NSCLC and for SLCLC
SACT in LC?
- Systemic anti-cancer therapy(SACT): these are specific therapies used in non-squamous NSCLC (i.e. adenocarcinoma, large cell undifferentiated)
- for patients w certain mutations like EGFR
EGFR-TK inhibitors?
afatinib, erlotinib and gefitinib.
ALK inhibitors?
crizotinib, ceritinib and alectinib.
NSCLC Tx?
- Surgical resection (normally lobectomy) is the treatment of choice in those where it is potentially curative (e.g. stage I-II).
- Radical radiotherapy can be used where surgery is not suitable
- Adjuvant chemotherapy is used in comb w surgery or given as a palliative therapy to improve survival in advanced disease
SCLC Tx?
- Surgical resection is only an option in early disease,
- Generally, treatment consists of chemotherapy (often cisplatin-based) and/or radiotherapy with the goal of extending survival and reducing symptoms.