Clinical Aspects Of Neoplasia Flashcards
What are the host factors that affect the tumour cell growth
1.Blood supply ( fibroblast growth factor,vascular endothelial growth factor)
2.Hormones( prostate,endometrium)
3.Immunological
Characteristics of tumour host interactions
Local effects
Cancer cachexia
Paraneoplastic syndromes
What are the local effects of tumours
1.Tumour impingement
2.ulceration/bleeding
3.Infection
Rupture or infarction
What is cancer cachexia
Weight loss,appetite loss (anorexia)and weakness(asthenia)
What is the cause of cancer cachexia
Macrophage producing TNF alpha
Macrophage inhibitory cytokine 1
What is the importance of paraneoplastic syndromes
Earliest manifestation of an occult neoplasm
Significant clinical problems that maybe lethal
May mimic metastatic disease thereby confounding treatment
What is the importance of paraneoplastic syndrome
Mat represents the earliest manifestation of an occult neoplasm
May represent significant clinical problems and maybe lethal
May mimic metastatic disease and thereby confounding treatment
What does small cell lung cancer produce
ACTH or ACTH like substance
What does small cell lung cancer cause
Cushing syndrome
Where else does Cushing syndrome cause tumors in
Adrenal
Pituitary
What does bronchial carcinoid and pancreatic carcinoma produce
Serotonin
Bradykinin
What does bronchial carcinoid and pancreatic carcinoma cause
Carcinoid syndrome
What does a person who has bronchial carcinoid or pancreatic carcinoma have
Flushing
Diarrhoea
What do renal cell carcinoma and hepato cellular carcinoma produce
Erythropoietin
What does renal carcinoma and hepato cellular carcinoma cause
Polycythaemia
What are the presentations of polycythaemia
An increase in RBC mass
Increase in haemoglobin concentration
Squamous cell carcinoma of lung,and breast carcinoma produces
PTHRP
TGF alpha
TNF
IL-1