Oncology Flashcards
What is the most common tumour causing bone metastases?
Prostate
What is the most common site for bone metastases?
Spine
What is a specific carcinogen for hepatocelllular carcinoma?
Aflatoxin ( produced by aspergillus)
How does cyclophosphamide work?
Causes cross-linking of DNA
What is the mechanism of action of methotrexate?
Inhibits dihydrofolate reductase and thymidylate synthesis
What are adverse effects of methotrexate?
Myelosuppression, mucositis, liver fibrosis, lung fibrosis
Which type of lung cancer is typically peripheral?
Adenocarcinoma
What is the most common type of lung cancer in non-smokers?
Adenocarcinoma
How is agitation managed in palliative care?
Haloperidol
How are hiccups managed in palliative care?
Chlorpromazine
How do you convert oral codeine to oral morphine?
Divide by 10
How do you convert oral tramadol to oral morphine?
Divide by 10
How do you convert oral morphine to oral oxycodone?
Divide by 1.5
How do you convert oral morphine to subcut diamorphine?
Divide by 2
How do you convert oral morphine to subcut diamorphine?
Divide by 3
How do you convert oral oxycodone to subcut diamorphine?
Divide by 1.5
How are secretions managed in palliative care?
Hyoscine Butylbromide SC 20mg hourly
What are the features of spinal cord compression?
Back pain,(may be worse on lying down and coughing), lower limb weakness, sensory changes, absent reflexes at level of lesion, increased below
How is spinal cord compression managed?
High dose oral dexamethasone, consider radiotherapy or surgery
What are features of spinal metastases?
unrelenting back pain, worse with sneezing, coughing, or straining, nocturnal, associated with tenderness
What are features of SVC obstruction?
SOB, swelling of face, neck, and arms, headache, visual disturbance, pulseless jugular venous distension
How is an SVC obstruction generally managed?
Dex, balloon venoplasty, stenting
What is CA 125 a tumour marker for?
ovarian cancer
What is CA 19-9 a tumour marker for?
Pancreatic cancer
What is CA 15-3 a tumour marker for?
Breast cancer
What is PSA a tumour marker for?
Prostate cancer
What is AFP a tumour marker for?
Hepatocellular carcinoma, teratoma
What is CEA a tumour marker for?
Colorectal cancer
What is S-100 a tumour marker for?
Melanoma, schwannomas