Non-hodgkin's lymphoma

Question 1

Marginal Zone Lymphomas

According to the WHO, what are the four subtypes of marginal zone lymphomas?

Answer 1

1. Extranodal (mucosal associated lympoid tissue - MALT)
2. Nodal
3. Primary cutaneous marginal zone lymphoma
4. Splenic marginal zone lymphoma

Question 2

Extranodal marginal zone lymphoma

what is the most frequent site of involvement of a EMZL?

Answer 2

Stomach

Question 3

EMZL

in what setting is EMZL most likely to occur in?

Answer 3

Chronic immune stimulation by bacteria, virusus, or autoimmune stimuli

Question 4

EMZL - Match the organism with the site of involvement

H.pylori
Chlamydia psittaci
Campylobacter jejuni
Borrelia afzelii
Achromobcater xylosoxidans

Answer 4

H.pylori - gastric
Chlamydia psittaci - ocular adnexa
Campylobacter jejuni - small intestine
Borrelia afzelii - skin
Achromobcater xylosoxidans - lung