Oncology Flashcards
What are the presenting features of prostatic cancer
Frequently asymptomatic Prostatic symptoms: poor stream, nocturia, dribbling, frequency Metastatic symptoms: bone pain, pathological fracture
Where would a cancerous prostate feel like?
Craggy Hard Enlarged Obliteration of median sulcus
What Duke’s stage CR Ca does this picture illustrate?

Stage A
(Innermost lining of bowel or SLIGHTLY growing in to muscle layer)
What are the features of a colorectal cancer of Duke’s stage A?
Innermost lining of bowel only
OR
SLIGHTLY growing in to muscle layer
What are the features of a Duke’s stage B colorectal cancer?
Cancer has grown through muscle layer of bowel
What Duke’s stage colorectal cancer does this picture illustrate?

Stage B
(Grown through muscle layer of bowel)
What Duke’s stage colorectal cancer does this picture illustrate?

Stage C
(Spread to one or more lymph nodes close to bowel)
What Duke’s stage colorectal cancer does this picture illustrate?

D
(Spread to somewhere else in body - eg. liver or lungs)
What are the features of Duke’s Stage C colorectal cancer?
Cancer has spread to one or more local lymphnodes (close to bowel)
What are the features of Duke’s Stage D colorectal cancer?
Cancer has spread to somewhere else in body (eg. liver or lungs)
Where does Colon cancer metastasise to through invasion?
Urinary bladder
Small bowel
Duodenum
Internal genitals
Abdominal wall
Retroperitoneum
Where are the common sites of metastases when colon cancer spreads haematogenically?
Lung and liver (most common)
Can also (rarely) go to brain, skeleton and kidnets
Once colorectal cancer has invaded lymph nodes, what other common lymphnodes can the cancer spread to?
Aortic lymphnodes
Liver ligament
Mediastinal lymph nodes
Supraclavicular lymph nodes
Inferior mesenteric lymph nodes (rectal)
Pelvic wall lymph nodes (rectal)
Which is more common, colon or rectal cancer?
Colon
What is the most common histology for a colorectal cancer?
adenocarcinoma (90-95%)
How does colorectal cancer spread?
Local invasion
Lymphatic
Venous spread
Coelomic
List the less common types of colorectal cancer
Squamous cell
Carcinoid
GI stromal tumour
Primary malignant lymphoma
List presentation of bowel cancer
Altered bowel habit
Weight loss
Rectal bleeding
Abdo pain
Anaemia symptoms
What investigations would you do to a pt if you suspected colorectal cancer?
RECTAL EXAM
Bloods: FBC (looking for anaemia)
Us and Es (?nutrition)
LFTs (detect abnormal liver function)
CEA (carcinogenic-embryonic antigen)
Sigmoidoscopy ((rigid/flexible) catches about 60% tumours) or Colonoscopy (gold standard)
Biopsy
CT (for staging)
Liver ultrasound/MRI (to detect liver mets)
What is the 5 year survival rate for a Stage A CRCa?
80%
What is the 5 year survival rate for a Stage B CRCa?
50%
What is the 5 year survival rate for a Stage C CRCa?
15-40%
What is the 5 year survival rate for a Stage D CRCa?
6%
What investigations would be useful for looking for mets in CRCa?
LFTs
Liver ultrasound
MRI (more specific for showing liver mets)