hodgkins lymphoma Flashcards
What is hodgkins lymphoma
lymphoid neoplasms affecting lymph nodes
Morphology of hodgkins lymphoma
large dysplastic mononuclear and multinucleated cells surrounded by a variable mixture mature non neoplastic inflammatory cells
Hodgkins lymphoma will usually present with
Lymphadenopathy
History of hodgkins
Thomas hodgkin in 1832 following affected lymph glands in postmoterm cases
dOROTHY REED and carl stenberg identified abnormal cell that defines HL in 1898
Diagnostic features of HD
Reed Stenberg cells and its variations in cancerous area
Hodgkins cancerous cells overproduce this cytokine
IL-13
Cancerous R-S cells origin
B origin
Virus that causes HL
EBV
Nucleus in R-S cell
Bi or multinucleate with prominent nucleolus in each nucleus
Other hodgkins cells apart from R-S cells are
Mononucleate
Affected lymph node morphology
Scattered tumour cells mixed with reactive lymphocytes,plasma cells, macrophages,neutrophils,eosinophils, with variable amount of fibrosis
Hodgkin disease sex distributuion
M>F
HL and age
Increased incidence with age, peaks at third decade, then a decline
Classical hodkins dx accounts for what percentage of hodgkins lymphoma
90%
Peak incidence in hodgkins dx
between ages 15-35
and another peak in late life for all subtypes than nodular sclerosis
Nodular sclerosis occurs mostly in
Young adults
Occupational risks foe HL
Wood dust
Benzene exposure
Nitrous oxide as dental anaesthetic
Highest incidence of EB virus association
Mixed cellularity HD