A7san slides ,♥, A7san comments :D

1. Revision

2. .Organ :- Intestine-
Disease :- Para T.B-
.Stain :- H & E-
Lesion :- The intestinal mucosa is filled with-
macrophages , giant cells and lymphocytes
((granulomatous reaction

3. Paratuberculosis

4. paratuberculosis
Organ: intestine
Stain: Ziehl Neelsen
lesion: the acid-fast bacilli is seen in the
intestinal mucosa

5. Paratuberculosis

6. organ :- Endometrium-
-Stain :- H & E
-Disease :- Brucellosis
-Lesion :- severe endometritis represented by
preglandular round cell infiltration necrotic
endometeritis ch. By necrotic epi. + Adhesion
.with few infl. Cell infiltration

7. Brucellosis

8. organ :- Endometrium-
-Stain :- H & E
-Disease :- Brucellosis
-Lesion :- severe endometritis represented by
preglandular round cell infiltration +Edema

9. Brucellosis

10. .Organ :- liver-
.Stain :- H & E-
.Disease :- Brucellosis-
Lesion :- presence of pyogranuloma-
characterized by presence of Caseous necrosis
surrounded by epithelioid cells , giant cells
and neutrophils then enclosed by fibrous C.T

11. Brucellosis

12. .Organ :- liver-
.Stain :- H & E-
.Disease :- Brucellosis-
Lesion :- presence of pyogranuloma-
characterized by presence of Caseous necrosis
surrounded by epithelioid cells , giant cells
and neutrophils then enclosed by fibrous C.T

13. Brucellosis

14. .Organ :- liver-
.Stain :- H & E-
.Disease :- Brucellosis-
Lesion :- presence of pyogranuloma-
characterized by presence of Caseous necrosis
surrounded by epithelioid cells , giant cells
and neutrophils then enclosed by fibrous C.T

15. Brucellosis

16. .Organ :- Lung-
Stain :- H & E-
Disease :- T.B-
Micro :- Granulomatous reaction + calcification-
.in center

17. Tuberculosis

18. .Organ :- Lymph node-
.Stain :- H & E-
Disease :- T.B-
Micro :- Granulomatous reaction + caseation &-
.calcification

19. Tuberculosis

20. .Organ :- Kidney-
Stain :- H & E-
Disease :- T.B-
.Micro :- Granulomatous reaction + Giant cells-

21. Tuberculosis

22. Tuberculosis

23. .Organ :- Lung-
.Stain :- H & E-
.Disease :- Pneumonic pasteurellosis-
Lesion :- Fibrous bronchopneumonia-
characterized by filling of alveoli with
serofibrinous exudate infiltrated with
neutrophils and macrophages , congestion of
interalveolar capillaries and hemorrhage

24. Pasteurellosis

25. .Organ :- Lung-
.Stain :- H & E-
.Disease :- Pneumonic pasteurellosis-
Lesion :- Fibrous bronchopneumonia-
characterized by filling of alveoli with
serofibrinous exudate infiltrated with
neutrophils and macrophages , congestion of
interalveolar capillaries and hemorrhage

26. Pasteurellosis

27. Pneumonic pasteurellosis
.Organ :- Lung-
.Stain :- Silver stain-
.Disease :- Pneumonic pasteurellosis-
Lesion :- Blackish stained P.hemorrage freely-
inside alveolar lumen & trapped intra-alveolar
.macrophage

28. Pasteurellosis

29. .Organ :- Lung-
.Stain :- IHC-
.Disease :- pneumonic pasteurellosis-
Lesion :- Positive brown immunolabelling-
against P.multocida mainly inside cytoplasm
.of macrophages infiltrating lumen of alveoli

30. Pasteurellosis

31. Pasteurellosis

32. Organ :- Spinal cord-
Stain :- H & E-
( Disease :- Actinomycosis ( A.pyogenes-
Lesion :- Consists of centrally located bacterial-
colonies surrounded by number of neutrophil,
lymphocyte & epithelioid cells all surrounded
by Fibrous C.T

33. Actinomyces pyogenes
A. pyogenes

35. Actinomyces pyogenes

36. Organ :- Spinal cord-
Stain :- H & E-
( Disease :- Actinomycosis ( A.pyogenes-
Lesion :- Consists of centrally located bacterial-
colonies surrounded by number of neutrophil,
lymphocyte & epithelioid cells all surrounded
by Fibrous C.T

37. Actinomyces pyogenes

38. Actinomyces pyogenes

39. Actinomyces pyogenes

40. Actinomyces pyogenes

41. Actinomyces pyogenes

42. Organ :- Intestine-
(Stain :- IHC ( ImmunoHistoChemestry-
Lesion :- Lowsenia enteritis-
Micro :- Brown stained lowsenia enteritis in-
lamina propria & in between intestine villi

43. Lawsonia intracellularis

44. Organ :- Intestine-
(Stain :- IHC ( ImmunoHistoChemestry-
Lesion :- Lowsenia enteritis-
Micro :- Brown stained lowsenia enteritis in-
lamina propria & in between intestine villi

45. Lawsonia intracellularis

46. .Organ :- Lung-
.Disease :- Avian influenza-
Micro :- Congestion, perivascular edema &-
.fibrosis

47. Avian influenza -Lung

48. Avian influenza - Spleen

49. Avian influenza
Organ: spleen
Stain: H &E
Disease: Avian influenza
Lesion: hemorrhage , congestion & hemolysis of
red pulp

50. Avian influenza ( High power of
( spleen

51. Avian influenza
Organ: lung
Stain: H &E
Disease: Avian influenza
Lesion: congestion, haemorrhage and
hemosiderosis

52. Avian influenza

53. Organ :- Heart-
Stain :- H & E-
Disease :- Leukosis sarcoma-
Micro :- Focal invasion & replacement of-
myocardium with pleomorphic leukocytes

54. Avian leukosis

55. .Organ :- Intestine-
.Stain :- H&E-
.Disease :- Intestinal coccidiosis-
Micro :- Various developmental stages of-
coccidia were seen in the epithelial lining of
intestinal crypts (arrow) or free in lamina
( .propria besides extravasated RBCs (arrow

56. Intestinal coccidiosis

57. Intestinal coccidiosis

58. Intestinal coccidiosis

59. .Organ :- Intestine-
.Stain :- H & E-
.Disease :- Ascariasis-
Lesion :- Presence of adult worm in the lumen-
.of intestine with desquamation of epithelium

60. Fowl Ascariasis

61. dermatophytosis
• Organ: skin
• Lesion:- dermatophytosis
• Stain: H&E
• Micro: severe inflammatory in skin beside
loss of hair shaft and ectothrix

62. Dermatophtosis

63. Dermatophtosis – Hair follicle

64. .Organ :- Lung-
.Stain :- PAS-
.Disease :- Dermatophytosis-
Micro :- PAS + hyphae are seen in skin-
( .( Brownish color

66. .Organ :- Lung-
.Stain :- H & E-
.Disease :- Aspergillosis-
Micro :- severe pneumonia appear as dense-
rounded fosci eosinophilic center beside
.granulomatous reaction

67. Aspergillosis

69. .Organ :- Intestine-
Disease :- Para T.B-
.Stain :- H & E-
Lesion :- The intestinal mucosa is filled with-
macrophages , giant cells and lymphocytes
((granulomatous reaction

70. paratuberculosis - 9

71. Organ :- spleen-
Stain :- H & E-
Disease :- Brucellosis-
Micro :- pyogranulomatous spleen represented-
by aggregation of mononuclear cells,
epithelioid cells & neutrophil

73. .Organ :- liver-
.Stain :- H & E-
.Disease :- Brucellosis-
Lesion :- presence of pyogranuloma-
characterized by presence of Caseous necrosis
surrounded by epithelioid cells , giant cells
and neutrophils then enclosed by fibrous C.T

74. Brucellosis-17

75. Pneumonic pasteurellosis
.Organ :- Lung-
.Stain :- Silver stain-
.Disease :- Pneumonic pasteurellosis-
Lesion :- Blackish stained P.hemorrage freely-
inside alveolar lumen & trapped intra-alveolar
.macrophage

76. Pneumonic pasteurellosis silver stain

77. .Organ :- Lung-
.Stain :- H & E-
.Disease :- Pneumonic pasteurellosis-
Lesion :- Fibrous bronchopneumonia-
characterized by filling of alveoli with
serofibrinous exudate infiltrated with
neutrophils and macrophages , congestion of
interalveolar capillaries and hemorrhage

78. Pneumonic pasteurellosis H & E-6

79. .Organ :- Lung-
.Stain :- IHC-
.Disease :- pneumonic pasteurellosis-
Lesion :- Positive brown immunolabelling-
against P.multocida mainly inside cytoplasm
.of macrophages infiltrating lumen of alveoli

80. Pneumonic pasteurellosis IHC- 7

81. Pneumonic pasteurellosis IHC- 7

82. Organ :- Lung-
Stain :- H & E-
Disease :- Avian influenza-
Micro :- Congestion & infiltration with-
mononuclear cell in the interstitial tissue

83. Lung - Avian influenza

84. Organ :- Heart-
Stain :- H & E-
Disease :- Leukosis sarcoma-
Micro :- Focal invasion & replacement of-
myocardium with pleomorphic leukocytes

85. Heart - Leukosis sarcoma

86. Organ :- Spleen-
Stain :- H & E-
Disease :- Avian influenza-
Micro :- Periarteriolar edema & necrosis of-
lymphoid tissue

87. Spleen - Avian influenza

88. Organ :- Spinal cord-
Stain :- H & E-
( Disease :- Actinomycosis ( A.pyogenes-
Lesion :- Consists of centrally located bacterial-
colonies surrounded by number of neutrophil,
lymphocyte & epithelioid cells all surrounded
by Fibrous C.T

89. (Actinomycosis ( A.pyogenes

90. (Actinomycosis ( A.pyogenes

91. Organ :- Intestine-
(Stain :- IHC ( ImmunoHistoChemestry-
Lesion :- Lowsenia enteritis-
Micro :- Brown stained lowsenia enteritis in-
lamina propria & in between intestine villi

92. Lowsenia enteritis

93. .Organ :- Intestine-
.Stain :- H & E-
.Disease :- Ascariasis-
Lesion :- Presence of adult worm in the lumen-
.of intestine with desquamation of epithelium

95. .Organ :- Intestine-
.Stain :- H&E-
.Disease :- Intestinal coccidiosis-
Micro :- Various developmental stages of-
coccidia were seen in the epithelial lining of
intestinal crypts (arrow) or free in lamina
( .propria besides extravasated RBCs (arrow

97. .Organ :- Skin-
.Stain :- H&E-
.Disease :- Fowl pox-
Micro :- The skin showed hyperplasia of prickle-
cell layer which contain ICIB moreover the
prickle cell layer shows hydropic degeneration
.

99. .Organ :- Lung-
.Stain :- PAS-
.Disease :- Dermatophytosis-
Micro :- PAS + hyphae are seen in skin-
( .( Brownish color

102. .Organ :- Skin-
.Stain :- H & E-
.Disease :- Dermatophytosis-
Micro :- Severe inflammatory reaction-
(dermatitis) in the skin besides loss of hair
shaft, the presence of perifollicular ectothrix,
. arthrospores & hyperkeratosis

105. .Organ :- Lung-
.Stain :- H & E-
.Disease :- Aspergillosis-
Micro :- severe pneumonia appear as dense-
rounded fosci eosinophilic center beside
.granulomatous reaction