Unit 3- Hematopoietic System Flashcards

1
Q

Lymphatic Circulation

A

Subcapsular sinuses, trabecular sinuses, medullary sinuses, efferent lymphatics, thoracic duct

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2
Q

Small Lymph Node Reaction Patterns

A

Lymphoid atrophy, lymph node degeneration, lymph node hypoplasia

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3
Q

Enlarged Lymph Node Reaction Patterns

A

Lymphoid hyperplasia and drainage, lymphadenitis, metastatic neoplasia, primary neoplasia

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4
Q

Lymphoid Hyperplasia

A

Response to antigen presentation or interleukins, local or generalized, draining site of local infection

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5
Q

Lymph Node Histology Structure

A

Capsule, germinal center, outer cortex, and inner cortex

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6
Q

Suppurative Lymphadenitis

A

Bacterial infection, Strep, Cornyebacterium, and Trueperella pyogenes

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7
Q

Granulomatous Lymphadenitis

A

Bacterial, viral, or fungal

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8
Q

Equine Lymphadenitis

A

Strangles caused by Strep equi in the retropharyngeal lymph node

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9
Q

Onion Skin Lymph Node in Sheep

A

Caseous lymphadenitis caused by Cornyebacterium pseudotuberculosis

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10
Q

Bovine Granulomatous Lymph Node

A

Mycobacterium bovis in mesenteric lymph node

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11
Q

Rhodococcus equi

A

Respiratory disease and enteric disease in foals causing lymphadenitis

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12
Q

Primary Neoplasias of LN

A

Lymphoma, plasma cell tumor, and histiocytic neoplasm

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13
Q

Metastatic Neoplasias of LN

A

Carcinoma, melanoma, mast cell tumor

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14
Q

Oral Melanoma

A

Aggressive and metastasize to lymph nodes and lungs

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15
Q

Hemosiderosis

A

Brownish discoloration observed in lymph nodes draining areas of hemorrhage

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16
Q

Anthracosis

A

Carbon particles retained by macrophages so medulla appears black

17
Q

White Pulp of Spleen

A

Lymphoid follicles

18
Q

Red Pulp of Spleen

A

Hematopoietic center

19
Q

Bloody Spleen

A

Diffuse splenomegaly with bloody consistency, congestion, septicemia, or acute hemolytic anemia

20
Q

Anthrax

A

Rapid post mortem autolysis and blood oozing from body orifices, do not perform post mortem

21
Q

Meaty Spleen

A

Diffuse splenomegaly with firm consistency, neoplasia, septicemia, chronic hemolytic anemia, granulomatous disease, diffuse follicular hyperplasia

22
Q

Tularemia

A

Francisella tularensis, rabbit fever causes systemic disease in cats, multifocal miliary white foci in spleen, lymph node, and liver

23
Q

Nodular Bloody Spleen

A

Hematoma, hemangiosarcoma, incomplete contraction, acute infarct, nodular hyperplasia

24
Q

Splenic Hemangiosarcoma

A

Most common malignant tumor in canine, leads to hemabdomen, poor prognosis, endothelial cells fill with blood

25
Q

Classical Swine Fever

A

Hog cholera, pestivirus targets macrophage, endothelial, and epithelial cells causing hemorrhage in kidneys, splenic infarct, necrotizing tonsilitis, and ulcers

26
Q

Turkey Egg Kidney

A

Ecchymosis of kidneys due to hog cholera

27
Q

Nodular Meaty Spleen

A

Focal nodular hyperplasia, granuloma, abscess, neoplasia

28
Q

Histiocytic Sarcoma

A

Interstitial dendritic cells in bernese mountain dogs, rottweilers, and retreivers, has local or disseminated form in hematopoietic areas

29
Q

Siderotic Plaques

A

Incidental lesions of the spleen

30
Q

Splenic Amyloidosis

A

Orange and waxy spleen

31
Q

Thymus Structure

A

Epithelial and lymphoid tissue, lobulated and split into cortical and medullary areas

32
Q

Severe Combined Immunodeficiency

A

Arabian foals lack B and T lymphocytes, develop disease after a few days, atrophy of the thymus

33
Q

Thymic Lymphoma

A

Neoplasm of T-lymphocytes in younger animals, malignant

34
Q

Thymoma

A

Neoplasm of epithelial cells, less common, slow growing and encapsulated

35
Q

Tonsil Reaction Patterns

A

Lymphoid depletion, inflammation, inflammatory polyps, neoplasia

36
Q

Tonsil Lymphoid Depletion

A

Viral infections like classical swine fever

37
Q

Tonsil Inflammation

A

Only primary or hematogenous, tonsils lack afferent lymphatics

38
Q

Tonsil Inflammatory Polyps

A

Common in older dogs

39
Q

Tonsil Neoplasia

A

Primary only, tonsils lack afferent lymphatics