OPB Flashcards
Incidence of breast cancer
1 in 8 women
Most common cancer in women
Breast cancer
2 most common cancers overall
1) Lung
2) Breast
Risk factors for breast cancer
- Age >50
- Benign breast disease
- Proliferative types of hyperplasia
- Exposure to ionising radiation
- Later first child birth
- History of breast cancer
- Family history of breast or ovarian cancer in a 1st degree relative
- Hormone therapy use
- Nulliparity
- Obesity
- Alcohol
- No breast-feeding
- Elevated endogenous oestrogen levels
- Hormonal contraceptive use
- Increased mammography density of breast tissue
- Menarche <12
- Menopause >45
Features which may make you suspect inflammatory breast cancer
- Erythema
- Oedema
- Peau d’orange
- Nipple retraction
Clinical features of breast cancer
- Breast lump
- Change in shape of breast
- Nipple discharge
- Skin changes
- Pain
- Ulceration
Most common sites of metastasis for breast cancer
- Bone
- Lung
- Liver
- Pleura
- Adrenal glands
- Skin
- Brain
Investigations to consider in a patient with ?breast cancer
- Mammogram (>40 years old)
- US (<40 years old)
- MRI
- FNA/core biopsy/vacuum assisted biopsy
Factors influencing choice of surgical management option in breast cancer patients
- Patient age
- Comorbidities
- Patient preference
- Tumour stage (size, lymphovascular invasion, nodal involvement, location)
- Tumour biomarkers
- Tumour: breast size ratio
Contra-indications for breast conservation surgery/wide local incision/lumpectomy in breast cancer patients?
- Large primary tumour
- Central primary tumour
- Small breast size
- Patient unfit for surgery/follow up radiotherapy
- Severe lung/heart disease
- Pes excavatum
- Chronic lack of mobility at ipsilateral shoulder
- Kyphoscoliosis
Indications for mastectomy (rather than WLE) in breast cancer patients
- Multifocal disease
- Bilateral disease where it is not possible to conserve the breasts
- Extensive DCIS
- Patients unsuitable for breast radiotherapy
- Significant family history of risk regarding procedures
Indications for axillary sampling (rather than axillary clearance)
- Negative findings on US of the axilla +/- biopsy
- High upper quadrant tumour (avoid irradiation of ‘cleared’ axilla)
Indications for axillary clearance (rather than axillary sampling)
- Histologically confirmed invasive breast cancer/ >1 node axilla biopsy confirmed malignant
- Patient preference
Main complication of axillary clearance
Lymphoedema
Aim of adjuvant therapy in breast cancer patients
Aim to reduce risk of recurrence locally or systemically
Indications for breast adjuvant radiotherapy in breast cancer patients
- No lymph node metastases in an adequate axillary node sample (4 nodes)
- <4 nodes involved in an adequate axillary node clearance (10 nodes)
- Invasive disease with inadequate excision margins unsuitable for re-excision
- Conserved breast unsuitable for excision
- T4 disease at presentation
Indications for chest wall radiotherapy after mastectomy in breast cancer patients
- Tumour size >5cm
- 4 or more involved nodes
- Involved resection margins
Indications for adjuvant chemotherapy after surgery in breast cancer patients
- High-risk early breast cancer
- Grade 3
- LVI
- Nodal involvement
- Triple negative
- HER2+
Main hormonal treatment of breast cancer in pre-menopausal women
- 5 years Tamoxifen
OR
- 5 years tamoxifen + another 5 years (if still pre-menopausal) or 5 years of letrozole (if post-menopausal)
Main hormonal treatments of breast cancer in post-menopausal women
- 5 years tamoxifen
OR
- 5 years tamoxifen + 5 years letrozole
OR
- 5 years letrozole
Indications for 5 years of tamoxifen treatment in pre-menopausal women with breast cancer
- Grade 1-2
- T1 <2cm
- Node -
- ER+
Indications for 10 years of tamoxifen or 5 years or tamoxifen + 5 years letrozole in pre-menopausal women with breast cancer
- T2-4
- Grade 3
- Node +
- HER2+
- ER poor
Indications for 5 years of treatment with tamoxifen in post-menopausal women with breast cancer
- Grade 1-2
- T1 <2cm
- Node -
- ER+
Indications for 5 years of treatment with tamoxifen + 5 years with letrozole in post-menopausal women with breast cancer
- Grade 2
- T2 >2cm
- Node -
- ER+
Indications for 5 years of treatment with letrozole in post-menopausal women with breast cancer
- Grade 3
- T3-4
- Node +
- HER2+
- ER poor
- Response to neo-adjuvant aromatase inhibitors
- Tamoxifen contra-indicated
What scan needs to be done before starting a breast cancer patient on letrozole
DEXA scan
How would you check menopausal status in patients on tamoxifen?
Check hormone levels after 6 weeks off tamoxifen
How would you confirm menopause in a women <50 on tamoxifen?
- FSH >30 on 2 occasions >6 weeks apart
AND - Amenorrhoeic for 24 months
How would you confirm menopause in a women 50-54 on tamoxifen?
- FSH >30 on 2 occasions >6 weeks apart
AND - Amenorrhoeic for 12 months
Which group of breast cancer patients should be offered immunotherapy, and what treatment would you offer?
- HER2 + patients
- Herceptin for 6-12 months
Features that increase risk of breast cancer recurrence
- Tumour size >1cm
- ER-
- Involvement of lymph nodes
Long-term follow up of ‘cured’ breast cancer patients
YEAR 1
- Clinical examination and mammogram
- Check family history and consider genetic testing
YEAR 2-4
- Mammogram
- Clinical examination if bilateral mastectomy performed
YEAR 5
- Clinical examination and mammogram
- Consider changing endocrine therapy
YEAR 6-10
- Mammogram
Year 10
- Mammogram with clinical examination
- Stop endocrine therapy as appropriate
- Discharge to breast screening programme
- Contact genetics if high risk patient
- Reassess family history and consider genetic referral
Define neutropenic sepsis
WCC <1 + pyrexia as a potential complication of systemic anti-cancer treatment
When are patients on SACT at risk of neutropenic sepsis?
Days 7-21 post-treatment
Risk factors for neutropenic sepsis
- Age >65
- Poor performance status
- Previous neutropenic sepsis
- Combined chemotherapy + radiotherapy
- Poor nutrition
- Advanced disease
- Co-morbidities
- Active infection
- Central venous catheters
- Surgical wounds
- Previous MRSA colonisation
- Unwell contacts
Clinical features of neutropenic sepsis
- Pyrexia (temp >37.5 or <36)
- Malaise
- Infective symptoms e.g. cough
What scoring assessment is used for initial assessment of patients with ?neutropenic sepsis
Formal risk assessment - combines NEWS score and MASCC score (maximum score is 26 - patients <21 or with NEWS Score >6 are high risk)
What investigations would you carry out in a patient with ?neutropenic sepsis?
- Clinical examination (including mouth and perineum) for signs of infection
- Daily bloods (CRP, FBC, U&Es, LFTs) while on antibiotics - must be requested URGENTLY on admission and following day
- Peripheral (and central) blood cultures
- Viral throat swabs
- Urine dipstick and MSU
- CXR
- Consider abdominal x-ray and CT or stool cultures for C. diff
Antibiotic choice in patients with standard risk neutropenic sepsis
1) IV piperacillin/tazobactam 4.5g qds
Antibiotic choice in patients with high risk neutropenic sepsis
1) IV piperacillin/tazobactam 4.5g qds + IV gentamicin
Side effects of Tazocin
- GI upset
- Rash, pruritis
- Phlebitis
- Insomnia
Side effects of Gentamicin
- Neurotoxicity (vertigo, gait instability)
- Ototoxicity
- Nephrotoxicity
- Oedema
- Rash, pruritis
What does dose regime of Tazocin depend on
Renal function - creatinine clearance determines if Tazocin is given bd, td or qds
Antibiotic management of a patient with neutropenic sepsis with previous MRSA or presumed central line infection
1) IV Tazocin + Vancomycin
Antibiotic management of a patient with neutropenic sepsis with suspected atypical pneumonia
1) IV Tazocin + Clarithromycin
Side effects of Vancomycin
- Anaphylactic reaction
- ‘Red man’ syndrome
- Back pain
- Bradycardia
- Chest pain
- Dyspnoea
- Hearing loss
- Hypotension
- Muscle pain
Side effects of clarithromycin
- Decreased appetite
- GI upset
- Dizziness
- Headache
- Insomnia
- Pancreatitis
- Skin reactions
- Vasodilation
- Vision disorders
What would you recommend in regards to chemotherapy treatment in a patient recovering from neutropenic sepsis?
- Reduce dose of chemotherapy
OR
- Delay chemotherapy cycle by a week
Clinical features of malignant spinal cord compression
- Pain (most commonly in the back, exaggerated by coughing and straining, and in a radicular pattern)
- Weakness
- Bowel problems
- Altered sensation
- Urinary incontinence
- Faecal incontinence
- Bilateral sciatica
- Saddle anaesthesia
Radicular pain in a patient with previous/current malignancy is ??? until proven otherwise
malignant spinal cord compression
What is the 1st line investigation in a patient with ?malignant spinal cord compression
URGENT MRI of the WHOLE spine (within 24 hours)
Management options for a patient with malignant spinal cord compression
1) 16mg PO dexamethasone (as a ‘holding measure’) followed by 8mg bd dexamethasone + PPI cover (given in the daytime)
2) Radiotherapy (20Gy in 5 fractions) to the affected area and 1-2 vertebrae above and below
OR
Surgery (fixation of the affected vertebrae) (1st line in indicated patients)
Or
OR
Chemotherapy (for sensitive tumours)
OR
Hormone treatment (in metastatic prostate cancer)
Side effects of lumbar spine radiotherapy
- Skin reaction
- Fatigue
- Cystitis
- Diarrhoea
Indications for surgery in patients with malignant spinal cord compression
- Single vertebral region of involvement
- No evidence of widespread metastasis
- Radio-resistant primary tumour (e.g. renal, sarcoma)
- Previous radiotherapy to a affected site)
- Unknown primary (allows us to get tissue for histology)
Causes of SVC obstruction
- Bronchus cancer
- Lung cancer (SCLC)
- Lymphoma
- Other malignancy
- Aneurysms
- Goitre
- Fibrosis
- Infection
- Central line in situ
- Thrombosis
Clinical features of SVC obstruction
- Swelling of face, neck, one/both arms
- Distended veins
- Shortness of breath
- Lethargy
- Headache
- Nasal congestion
- Epistaxis
- Dizziness
- Syncope
Symptoms are often worse on bending forward or lying down - Neck veins don’t collapse on compression
- Visible veins
- Raised JVP
- Arm oedema
- Plethora
Investigations to consider in a patient with SVC obstruction
1) CXR (looking for a mass)
2) CT chest with contrast (provides 3D information about the cause - contrast will accumulate in the area before the obstruction)
3) Venogram
4) Routine bloods and coagulation screen
Management of a patient with malignant SVC obstruction
Dexamethasone is often given first line (although there is limited evidence for this)
1) Radiological stenting
2) Chemotherapy (in SCLC, lymphoma, teratoma)
OR
Radiotherapy (in other malignant causes)
Define malignant hypercalcemia
Corrected serum calcium >2.65 mmol/L on two occasions in patients with malignancy
3 most common causes of malignant hypercalcemia
- Lung cancer
- Breast cancer
- Multiple myeloma
Differentials for malignant hypercalcemia
- Brain/bony metastasis
- Delirium
- Paraneoplastic syndrome
- Electrolyte imbalances
- Infection
Clinical features of malignant hypercalcemia
May be asymptomatic (particularly in mild cases)
- Bone pain, pathological fractures
- Delirium, drowsiness, coma
- Fatigue
- Muscle weakness
- Impaired concentration and memory
- Depression
- GI upset
- Polyuria, polydipsia and dehydration
- Renal colic, renal stones, renal impairment
- Hypertension
- Shortened QT on ECG
- Pruritus
- Eye infections, corneal calcifications
Investigations to consider in a patient with ?malignant hypercalcemia
- General infection screen e.g. MSU
- Routine bloods including calcium and PTH
- CT head (rule out brain metastasis)
Management of a patient with malignant hypercalcemia
1) Adequate rehydration to correct dehydration
- Oral rehydration if appropriate
- 3L of 0.9% NaCl over 24 hours
2) IV zolendronate 4mg over 15 mins in 100ml 0.9% NaCl (if eGFR >30)
OR
Pamidronate (if eGFR <30)
3) Review medications affecting renal function (e.g. NSAIDs, diuretics, ACE inhibitors)
4) Check U&Es in 3-4 days
Management of a patient with neutropenic sepsis with a penicillin allergy
1) IV Vancomycin + Metronidazole + PO Ciprofloxacin
Side effects of metronidazole
- Dry mouth
- Myalgia
- GI upset
- Metallic taste
Side effects of ciprofloxacin
- Tendon damage
- Arthralgia, myalgia
- GI upset
- Dizziness
- Dyspnoea
- Fever
- Headache
- QT prolongation
- Skin reactions
- Sleep disorders
- Altered taste
- Tinnitus
- Vision disorders
Oral antibiotic stepdown in patients with neutropenic sepsis
Co-amoxiclav + ciprofloxacin
Indications for GCS-F in patients with neutropenic sepsis
- Profound neutropenia (<0.1)
- Prolonged neutropenia (> 10 days)
- Pneumonia
- Hypotension
- Multi-organ dysfunction
- Uncontrolled primary disease
- Invasive fungal infection
- Age >65
- Hospital inpatient at time of developing fever
Most common malignant causes of spinal cord compression
- Breast
- Lung
- Prostate
- Multiple myeloma
What is the scoring system used to consider surgery in patients with malignant spinal cord compression, and what factors does it take into account?
Tokuhasi score:
- Patient’s general condition
- Number of extra-spinal bone metastasis
- Number of spinal bone metastasis
- Metastasis in major organs
- Primary site of cancer
- Neurological deficit
What blood tests should you request to monitor a patient on bisphosphonates
- Renal function
- Calcium
- Phosphate
- Potassium
Side effects of bisphosphonates
- GI upset
- Flu-like symptoms
- Osteonecrosis of the jaw
Mechanism of action of Tamoxifen
Oestrogen receptor antagonist
Route of administration of Tamoxifen
Oral
Indications for Tamoxifen
- ER+ breast cancer (as adjuvant or neb-adjuvant therapy) post-surgery/radiotherapy in pre- or peri-menopausal women
- Breast cancer patients for 5 years after tumour removal
- Primary prevention of breast cancer (in women >30 with moderate/high risk)
- Gynaecomastia in males
Contraindications for tamoxifen
- Family/personal history of idiopathic VTE
- Pregnancy
- Concurrent anastrozole therapy
Side effects of tamoxifen
MOST IMPORTANT:
1) endometrial changes (hyperplasia, polyps, cancer, uterine sarcoma)
2) Increased risk of thromboembolism
- Alopecia
- Anaemia
- Cataracts
- Cerebral ischaemia
- Fatigue
- Fluid retention
- Headache
- Hot flushes
- Nausea
- Retinopathy
Tamoxifen DOES NOT affect bone mineral density
Route of administration of aromatase inhibitors
Oral
Indications for letrozole
- Adjuvant treatment of ER+ invasive early breast cancer in post-menopausal women
- 1st line treatment in ER/PR+ or ER/PR status unknown locally advanced or metastatic breast cancer in post-menopausal women
- Extended adjuvant therapy of early breast cancer in post-menopausal women who have received 5 years of adjuvant tamoxifen
- Treatment of advanced breast cancer in post-menopausal women where other anti-oestrogen therapy has failed
Indications for exemestane
- Adjuvant treatment of ER+ early breast cancer in post-menopausal women following 2-3 years of tamoxifen
- Advanced breast cancer in post-menopausal women where anti-oestrogen therapy has failure
Indications for anastrozole
- Adjuvant treatment of ER+ early invasive breast cancer in post-menopausal women
- Adjuvant treatment of ER+ early breast cancer in post-menopausal women following 2-3 years of tamoxifen
- Advanced breast cancer in post-menopausal women which is ER+ or responsive to Tamoxifen
Contra-indications for aromatase inhibitors
- Pre-menopausal women
- Pregnancy and breast feeding