Allergic Nasal Polyp is characterized by: 1) Hyperplastic respiratory epithelium 2) Edematous stroma 3) Dilated congested capillaries The document contains diagrams and photomicrographs of various pathological conditions affecting multiple organ systems. The sections describe microscopic findings, histological features, and pathological changes seen in conditions such as pneumonia, emphysema, infarction, cancer, glomerulonephritis, bilharziasis, appendicitis, liver diseases, and others.

2. PATHOLOGY DEPARTMENT
FACULTY OF MEDICINE
AL-AZHAR UNIVERSITY

4. Allergic Nasal Polyp
1
2 4
3
1) Resp. epith.
2) Edematous core
3) Hyperplastic mucous
glands
4) Mucus

5. Allergic Nasal Polyp
1 1) Hyperplastic resp. epithel.
2) Edematous stroma
3) Dilated congested capillaries
4) Eosinophils
2
3 4

6. 1- Fibrinous (inflammation) Pleurisy

7. 4- Lobar Pneumonia, red hepatization
(Diagram)
Alveolar Alveolar
Alveolar wall
wall
Capillary
Alveolar
Lumen Alveolar
capillary
Alveolar
lumen

8. 4- Lobar Pneumonia, red hepatization
(Low Power)
Alveolar
wall
Alveolar
Lumen

9. 14- Chronic Venous Congestion, Lung
(Diagram)
Heart Failure Cell
Congested Alveolar
capillaries
Red Cells

10. 14- Chronic Venous Congestion, Lung
Low Power
Alveolar Wall
Alveolar Capillary
Alveolar Space

11. 14- Chronic Venous Congestion, Lung
High Power
Thick Congested Alveolar wall
Heart Failure
cells
Brown Hemosiderin

12. Lobar Pneumonia, Grey Hepatization
1
2
3
4
1) Inflammatory cells
2) Clumps of fibrin and edema
3) Fragmented RBCs
4) Congested alveolar capillaries

13. Bronchopneumonia

14. Bronchopneumonia

15. Emphysema
1
2
3
1) Distended, distorted, thin-walled, and wide alveolar spaces
2) Intralveolar spur
3) Thick walled capillaries

16. Emphysema
2
3
1
1) Distended, distorted, thin-walled, and wide alveolar spaces
2) Thick walled capillaries
3) Inflamed alveolar speta with congested blood vessel

17. Infarction, Lung
Congested lung tissue
Infarct

18. Oat Cell Carcinoma
1
2
1) Lung tissue
2) Tumor showing peripheral infiltration of lung tissue (short arrows)

19. Oat Cell Carcinoma
Malignant cells

21. Acute Diffuse Glomerulonephritis
3
1
2
1) This glomerulus is enlarged, hypercellular and capillary loops are poorly defined.
2) Increased numbers of epithelial, endothelial, and mesangial cells as well as
neutrophils in and around the glomerular capillary loops.
3) Tubule shows intraluminal casts

22. Rapidly Progressive Glomerulonephritis
1
2
3
1) Epithelial creascent
2) Compressed and distorted glomerular capillaries
3) Edematous stroma

23. Chronic Glomerulonephritis
4
3
1
2
1) Global glomerulosclerosis
2) Tubular thyroidization
3) Arteriolosclerosis
4) Interstitial chronic inflammatory cells

24. Infarction, Kidney
High Power
Inflammatory
Infarct Zone
Viable
Tissue

25. Infarction, Kidney
High Power

26. Renal Cell Carcinoma
1
2
1) Sheets and cords of vacuolated malignant tumor cells
2) Thin vascularized connective tissue septa

27. Nephroblastoma
1
2
3
1) Blastema cells
2) Epithelial cells
3) Undifferentiated stroma cells

29. 30- Bilharziasis, urinary bladder
Diagram
Transitional epithelium
Calcified Ova
Brun’s nest
Fresh Ova

30. 30- Bilhaarziasis Transitional Bladder
. Urinary
EpithelialEpithelium
Changes
Epithelial Hyperplasia
Cystitis Cystica
Brun’s nest

31. 30- Bilhaarziasis . Urinary Bladder
Epithelial Changes
Epithelial
Hyperplasia
Cystitis
Glandularis

33. Prostatic Hyperplasia
2
1
1) Hyperplastic prostatic acini
2) Fibromuscular stroma

34. Prostatic Hyperplasia
1
2
1) Dilated acinus containing corpora amyllacae
2) Papillary formation

35. Seminoma
1
2
1) Benign-looking testicular tissue
2) Tumor tissue

36. Seminoma
1
2
1) Cords of seminoma cells
2) Vascularized fibrous septa

38. 2- Acute Suppurative Appendicitis
(Diagram)

39. 2- Acute Suppurative Appendicitis
(Low Power)

40. 2- Acute Suppurative Appendicitis
(Low power)

41. 2- Acute Suppurative Appendicitis
(Congested dilated Bl. Vs. with PNLs infiltration)

42. Amoebic Colitis
2
1
3
1) Flask-shaped ulcer
2) Undermined edge
3) Necrotic floor

43. Amoebic Colitis
1
2
1) Entamoeba histolytica
2) Inflammatory cells

44. 29- Bilharzial Polyp, colon
Diagram
Polyp
Bilharzial
Ova
Vasular C. T. Core

45. 30- Bilharzial Polyp, colon
Low Power
Calcjfied Bilharzial Ova
Calcified Bilharzial Ova in C.T. Stroma
Colonic In C.T.Stroma
mucosa

46. 42- Adenoma, Intestine

48. 56- Adenocarcinoma, Colon

50. adenocarcinoma

53. 57- Mucoid Carcinoma, Colon

58. 12- Fatty Change, liver
Low Power
Signet ring
cells

59. 12- Fatty Change, liver
High Power
Normal Cells
Signet ring cells

60. 15- Chronic Venous Congestion, liver
(Diagram)
Congested Central
vein
Degenerated liver c
Degenerated liver
cells
Portal Tract

61. 15- Chronic Venous Congestion, liver
Low Power

62. 15- Chronic Venous Congestion, liver
High Power

63. Amoebic Liver Abscess
2
3
1
1) Necrotic liver cells
2) Entamoeba histolytica
3) Hepatocytes infiltrated with chronic inflammatory cells

64. Acute Yellow Atrophy
1
4
2
3
1) Necrotic hepatocytes + interstitial hemorrhage
2) Dilated congested sinusoid
3) Normal-looking bile ductule
4) Chronic inflammatory cells

65. 31- Bilharzial Fibrosis, liver

68. Portal Cirrhosis
1
2
1) Cirrhotic nodules with absent central veins
2) Bands of vascularized fibrous tissue infiltrated with chronic
inflammatory cells

69. Portal Cirrhosis
1
2
1) Cirrhotic nodules showing fatty change with absent central veins
2) Bands of vascularized fibrous tissue infiltrated with chronic
inflammatory cells. Blood vessels are dilated

70. Portal Cirrhosis
Higher power of previous slide

71. Biliary Cirrhosis
1
2
1) Dilated bile ductules and canaliculi filled with
brown bile pigment
2) Cholestasis

72. Biliary Cirrhosis
1
1) Bands of fibrous tissue surrounding cirrhotic nodule

73. Hepatocellular Carcinoma
1
1) Cords and clusters of malignant hepatocytes

75. Proliferative Phase
Glands are regular, round or elongated,
Lined by columnar epithelium
No secretion
Stroma is dense and cellular

76. Secretory Phase
Glands are dilated and tortuous
Lined with col. Or cuboidal epith.
Sub- or supranuclear vacuoles
Luminal secretion
Stroma is edematous
Cells are plump

77. Secretory Phase
1
2

78. Endometrial Hyperplasia
1
2
3
1) Glands
2) Stroma
3) Hemorrhage

79. Endometrial Hyperplasia
1
2

80. 34- Leiomyoma

82. Adenocarcinoma, Uterus
1
2
1) Malignant glands
2) Desmoplastic stroma

83. Adenocarcinoma, Uterus
1
2
3
1) Malignant glands
2) Desmoplastic stroma
3) Invasion of myometrium

84. Complete Hydatidiform Mole
1
2
1) Chorionic villi
2) Trophoblast

85. Choriocarcinoma
1
2
1) Cytotrophoblasts (Langhans cells)
2) syncytiotrophoblasts

87. Fibrocystic changes of Breast
1
2
3
4
5
1) Epitheliosis
2) Cyst
3) Adenosis
4) Fibrosis
5) Apocrine metaplasia

88. 43- Pericanalicular Fibroadenoma

89. 44- Intracanalicular Fibroadenoma

91. Ductal Carcinoma-in-situ
1
2
3
1) Dilated breast duct filled with malignant cells
2) Central necrosis
3) Stromal fibrosis

92. 54- Infiltrating Duct carcinoma

96. 1 Rheumatic Myocarditis
2
3
1) Myocardium
2) Blood vessels
3) Perivascular Aschoff body

97. Rheumatic Myocarditis
1
2
1) Fibrinoid degeneration of collagen fibers and interstitial edema
2) Aschoff giant cell

98. Muscle
Bundles
Congested
Capillary
Fibrous Tissue

100. Bacterial Endocarditis
1
2
3
1) Ulcerated valve cusp
2) Bacterial colonies
3) Inflammatory cells

101. Bacterial Endocarditis
1
2
3
1) Sparse inflammatory cells
2) Fibrin
3) Colonies of bacteria

102. Atheroma
1 6
2
3
4
1) Focal calcification
2) Fibrosis
3) Ulcerated
5
endothelium
4) Foam cells
5) Cholesterol clefts
6) Recanalisation

104. Colloid Goitre
1
2
1) Acini
2) cyst

105. Toxic Goiter
1
1) Follicle
2) Inflammatory cells
2

106. Papillary Carcinoma
1
2
1) Tumor papillae lined by tumor cells
2) Psammoma body

107. Papillary Carcinoma
1
2
1) Tumor papillae lined by tumor cells
2) Tumor nuclei

109. 18- Infarction, spleen
Diagram
Capsule
Infarct
Hyperemic Zone

110. 18- Infarction, spleen
Low Power
Capsule
Infarct
Hyperemic Zone

111. 21- T.B. Lymphadenitis
Diagram

112. 21- T.B.Lymphadenitis
Low power
Lymphoid Tissue Langhan’s
Giant Cell
Tubercle

113. Hodgkin’s Lymphoma
(Mixed Cellularity Type)

114. 58- Metastatic Carcinoma, Lymph Node

115. •Soft tissue

116. 25- Rhinoscleroma
Diagram
Stratified Squamous Mickulicz cell Lymphocyt Russle Body
Epithelium e

117. 25- Rhinoscleroma
Low Power

118. 26- Actinomycosis
Diagram
Colony
Chronic inflammatory cells
Fibrous Tissue
Multiple abscesses

119. 26- Actinomycosis
LOW Power
Chronic
inflammatory
cells
Fungal Colonies

120. 35- Lipoma

123. 39- Cavernous Lymphangioma

125. 40- Cavernous Hemangioma

126. bone

127. 37- Chondroma

130. 45- Giant Cell Tumor, Bone

133. 47- Chondrosarcoma

134. 48- Osteosarcoma

137. Skin

138. 41- Squamous Cell Papilloma

140. 38- Capillary Hemangioma

141. 50- Intradermal Nevocytic Nevus

144. 51- Malignant Melanoma

148. 52- Squamous Cell Carcinoma

152. 53- Basal Cell Carcinoma

158. Meningioma
1
2
1) Whorls of round, spindle or oval cells
2) Central capillary with hyalinised wall

159. Meningioma
Multiple psammoma bodies

160. 33- Schwanoma

162. Astrocytoma
1
2
1) Astrocytes with large nuclei and scanty cytoplasm
2) Network of interlacing fibrils