Part 4
- Created by: amiedesancha_
- Created on: 03-12-18 18:07
Presentation of breast cancer
Breast lump
****** discharge and / or inversion
Eythema, peau d'orange, ****** ulcer / eczma
Skin dimpling / deforrmity / puckering
Axillary mass
lymphoedema
Diagnostic score for breast cancer
Physical exam = P/E
Mammography = M
US = U
Cytology = C
Core biopsies = B
1 = normal
2 = benign
3 = intermediate
4 = suspicious of malignancy
5 = malignancy
Classic lobular carcinoma in situ (LCIS) / lobular
Not considered breast cancer
But a marker of increased risk
(2)
Ductal carcinoma in situ (DCIS), pleomorphic LCIS
Considered a cancer
Remain in the basement membrane of the tubules of the breast
Tamoxifen
Drug given to a patient who is oestrogen receptor positive
Reduces risk of recurrence so can be continued after remission
1 and 2 = early, 3 = locally advanced
Stage 1 and 2 breast cancer =
Stage 3 =
Inflammatory breast cancer
A form of locally advanced breast cancer
Most aggressive form
Presents as swelling, tenderness and redness
Sentinel lymph node biopsy is contraindicated
Herceptin (trastuzumab)
Treatment for HER-2 receptor (EGFR) +ve breast cancer
TP53
Breast cancer = 80-90%
High risk of sarcoma
High risk of childhood leukaemia
Adrenal cancer
Lung Cancer
Clinical features
Most common:
Anorexia and weight loss
Cough, dyspnea
Supraclavicular LNs
Others:
Chest pain, haemoptysis
Hoarseness, dysphagia
Bone pain, clubbing
Neurological manifestations
Small cell lung carcinoma
10-15% of lung cancers
Predominantly smokers
More aggressive form
Rarely resectable (<1%) therefore surgery is ineffectibe
Chemosensitive but prone to recurrence and resistance to chemotherapy
NSCLC
80-85% of lung cancers
Adenocarcinoma
Squamous cell carcinoma
Large cell
Adenocarcinoma
Most common type of cancer in NSCLC
Due to EGFR mutations
K-ras
and more
5, 8 and 9
What numbered lymph nodes are missed in endobronchial USS
Indications for surgery
Stage I and II (some with IIIa)
Adequate lung function (FEV1 >60% - should allow pneumonectomy)
No significant co-morbidities
Chemotherapy in NSCLC
Chemotherapy in what cancer?
Platinum + new agents (gemcitabine)
Chemoradiotherapy in N2/N3 disease + immune therapy
EGFR
Overexpressed in 60% of NSCLC
Inhibition especially effective in adenocarcinomas
Response correlates with mutation in the gene
Resistance common
Most mutations are exon-19 short in frame deletions, or exon-21 point mutations
Ab that blocks PD-1
Pembrolizumab
Stage IV squamous cell LC
Treat with:
Pembrolizumab
Platinum chemo
Nivolumab
Stage IV non-squamous cell LC without mutations
Treat with:
Platinum chemo
Nivolumab
Non-SCC with EGFR or ALK rearranged
Treat with
Tyrosine kinase inhibitors (for EGFR)
Platinum chemo
Nivolumab
Asthma
Diagnose:
Both sides of chest expanding - Yes
Breath sounds same on both sides - Yes
Lung resonant on both sides - Yes
Wheezes from narrow airways - Yes
Severe asthma attack
Breathless at rest, speech in words or phrases
RR >25
Pulse >110
Loud wheeze
<33% predicted PERF/FEV1
PaCO2 >40mmHg
PaO2 < 60mmHg
Life threatening asthma attack
Cyanosed at rest, too breathless to speak
RR > 25
Pulse >110 or may be bradycardic
May have a quiet chest
<20% predicted PERF/FEV1
PaCO2 >45mmHg
PaO2 <60mmHg despite O2 therapy
Types of hypersensitivity
Type 1 = Allergy
Mediated by IgE mast cells
Type 2 = Antibody mediated - complement mediated
Triggered by complexes of Ab-Ag (IgM,IgG) against cell surface / ECM
Type 3 = Immune complex mediated
Soluble immune complexes, IgM and IgG
Type 4 = Cell mediated
Serum sickness
Accumulation of Type III mediated immune complexes in the body
Asthma
A combination of type 1 and type 4 hypersensitivity
Asthma
Wheeze
SOB
Chest tightness
Cough
Allergic asthma
Easily recognised
usually commences in childhood
associated with past Fhx of allergic disease
Eosinophillic inflammation
Good response to ICS
Non-allergic asthma
Sputum may be neutrophilic
Eosinophilic or with few inflamm cells
Less response to ICS
Late onset asthma
More common in women
Tendency to be non-allergic
Higher doses of ICS required
Asthma with fixed airflow limitation
Long-standing
Airflow limitation due to airway remodelling
SABA
Salbutamol
LABA
Formoterol
Salmeterol
Vilanterol
Short acting anticholinergic/musc antagonist
Ipratropium
Long acting antiC/M antagonists
Tiotropium
Umeclidinium
Histamine and Leukotriens
Bronchoconstrictor mediators from Mast cells
Tiotropium
10% increase when combined with SABA
Attenuates IL-13 goblet induced metaplasia
(IL-13 most important cytokine in hypersecretion)
ICS
Group of drugs that:
Suppress the Th2 airway inflammation
Reducing infiltration and activating of eosinophils
as well as other cells
Long acting ICS
Fluticasone Furoate
FF / Vilanterol
Only licensed ICS/LABA in asthma
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