Lymph node architecture is partially effaced by a polymorphous paracortical infiltrate composed of small lymphocytes, numerous histiocytes, scattered immunoblast‑like large cells, and foci of karyorrhexis without definite necrosis. Immunohistochemically, lymph node in the effaced are show the background lymphoid population is predominantly CD3-positive T cells with sparse CD20-positive B cells. Scattered large cells express CD30, while CD20, CD10 and BCL2 are negative in the large cells. CD15 highlights mainly small cells.The Ki-67 proliferation index in the involved areas is approximately 40%. No definite Reed-Sternberg-type cells or overt features of lymphoma are identified. Rest of lymph node stained as reactive process pattern of immunostaining.
Paraffin block for immunostaining.
Sections immunostained for CD20, Cd3, Bcl2, CDd10, CD15, CD30 and Ki-67 and DAB detection system was used.
Cervical lymph node, excision biopsy, immunostaining:
COMMENT:
Correlation with clinical findings and appropriate viral serologic studies (e.g. EBV and others as clinically indicated) is recommended.