Non-Hodgkin's lymphomas of the gastrointestinal tract. An evaluation of paraffin section immunostaining.
Although the gastrointestinal (GI) tract is the most common site of primary extranodal lymphomas, the lineage of these tumors has been controversial. The authors used paraffin-reactive antibodies detecting markers of B-, T-, histiocytic, and epithelial cells to study 34 non-Hodgkin's lymphomas of the GI tract for which unequivocal frozen-section immunophenotypine was available as a control to determine whether these antibodies are reliable in the study of these tumors. Frozen-section studies revealed 31 tumors of B-cell origin and three T-cell tumors. Paraffin-reactive antibodies confirmed B-cell lineage in 28 of the 31 cases, with equivocal results in the remaining three. Only one of the T-cell lymphomas was identified in paraffin studies. Our results indicate that paraffin-reactive antibodies can reliably identify most B-cell lymphomas in the GI tract but may be unreliable in the detection of lymphomas of T-cell origin.
Hematopathology Section, Mallory Institute of Pathology, Boston, Massachusetts 02118.
B C
BC
Wolf
A W
AW
Martin
H J
HJ
Ree
P M
PM
Banks
S
S
Smith
R S
RS
Neiman
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000951:Antigens, Neoplasm / Q000032:analysis; D001402:B-Lymphocytes / Q000473:pathology; D005069:Evaluation Studies as Topic; D005260:Female; D005629:Frozen Sections; D005770:Gastrointestinal Neoplasms / Q000378:metabolism / Q000473:pathology*; D006801:Humans; D007124:Immunoenzyme Techniques; D008228:Lymphoma, Non-Hodgkin / Q000378:metabolism / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D010232:Paraffin; D010641:Phenotype; D010865:Pilot Projects; D012189:Retrospective Studies; D013194:Staining and Labeling; D013601:T-Lymphocytes / Q000473:pathology
D000951:Antigens, Neoplasm; D010232:Paraffin