POLIOMYELITIS Figure 3-18 POLIOMYELITIS Perivascular lymphoid cuffing (arrow) is a nonspecific finding. More about this image found in POLIOMYELITIS Perivascular lymphoid cuffing (arrow) is a nonspecific findi...

LYMPHOID INTERSTITIAL PNEUMONITIS (LIP) Figure 9-12 LYMPHOID INTERSTITIAL PNEUMONITIS (LIP) A: Chest computerized tomography (CT) scan showing widespread nodularity. B: There is a diffuse and nodular lymphocytic infiltration. C: Peribronchial and perivascular lymphocytic aggregates are seen. D... More about this image found in LYMPHOID INTERSTITIAL PNEUMONITIS (LIP) A: Chest computerized tomography (...

LYMPHOID NODULE AT ANORECTAL JUNCTION Figure 9-18 LYMPHOID NODULE AT ANORECTAL JUNCTION A large germinal center is seen. More about this image found in LYMPHOID NODULE AT ANORECTAL JUNCTION A large germinal center is seen.

LIVER IN EARLY HIV INFECTION Figure 9-21 LIVER IN EARLY HIV INFECTION A: Portal tract with a reactive lymphoid follicle. B: HIVp24 immunohistochemistry in liver portal tract lymphoid follicle shows virus in dendritic cells. More about this image found in LIVER IN EARLY HIV INFECTION A: Portal tract with a reactive lymphoid foll...

YERSINIA APPENDICITIS Figure 13-12 YERSINIA APPENDICITIS A–C: Yersinia enterocolitica infection, showing lymphoid hyperplasia (A) and focal germinal center neutrophil infiltration with early microabscess formation (B, arrow; C) are seen. D,E: Y. pseudotuberculosis appendix involvement demonstrates lymphoid hyperplasia and epithelioid cell granuloma formation in relation to germinal centers. (Courtesy of Dr. L. W. Lamps, University of Michigan, Ann Arbor, MI) More about this image found in YERSINIA APPENDICITIS A–C: Yersinia enterocolitic...

CHRONIC H. PYLORI-ASSOCIATED GASTRITIS Figure 13-30 CHRONIC H. PYLORI-ASSOCIATED GASTRITIS A prominent lymphoplasmacytic mucosal infiltrate and interspersed secondary lymphoid follicles with germinal centers are present. More about this image found in CHRONIC H. PYLORI-ASSOCIATED GASTRITIS A prominent lympho...

EBV-ASSOCIATED INFECTIOUS MONONUCLEOSIS Figure 8-8 EBV-ASSOCIATED INFECTIOUS MONONUCLEOSIS Lymph node with architectural distortion (A) with focal capsular permeation by lymphoid cells (top), a polymorphic mononuclear infiltrate (B) with associated plasma cells (C) and focal mitotic activity (cen... More about this image found in EBV-ASSOCIATED INFECTIOUS MONONUCLEOSIS Lymph node with architectural dist...

C. TRACHOMATIS INFECTIONS Figure 18-12 C. TRACHOMATIS INFECTIONS A: Eyelid with early stage of trachoma (A), shows a typically granular conjunctiva due to the presence of multiple lymphoid follicles. (Courtesy of the CDC PHIL) B: Lymphogranuloma venereum (LGV) demonstrating draining lymph nodes. (Courtesy of Dr. M. Gaviria, Pontifica Bolivariana University, Medellín, Colombia) More about this image found in C. TRACHOMATIS INFECTIONS A: Eyelid with early stage of t...

PERSISTENT GENERALIZED LYMPHADENOPATHY (PGL) Figure 9-2 PERSISTENT GENERALIZED LYMPHADENOPATHY (PGL) A: The lymph node has irregularly shaped reactive follicles. B: PGL lymph node follicle in center with macrophage phagocytosis and apoptotic debris. C: HIVp24 stains HIV virus in follicular dend... More about this image found in PERSISTENT GENERALIZED LYMPHADENOPATHY (PGL) A: The lymph node has irregul...

PRIMARY EFFUSION LYMPHOMA (PEL) Figure 8-22 PRIMARY EFFUSION LYMPHOMA (PEL) A: Cytologic cell block preparation of pleural effusion fluid shows sheets of dyscohesive atypical lymphoid cells at low power. B: High power illustrates the typical high-grade cytomorphology, prominent single nucleoli, ... More about this image found in PRIMARY EFFUSION LYMPHOMA (PEL) A: Cytologic cell block preparation of ple...