Lab images Flashcards
Morphologic diagnosis and etiology
Acute necrotizing and hemorrhagic rumenitis
Mycotic rumenitis secondary to long-term antibiotic treatment
Morphologic diagnosis and etiology
Chronic multifocal hyperplastic enteritis
Coccidia
Name the cells on the left and right images.
Etiological diagnosis?
Left: megametocytes
Right: oocysts
Intestinal coccidiosis
Morphologic diagnosis and etiology
Acute severe necrotizing enteritis with villous atrophy
Feline panleukopenia virus
See villi collapsed and necrosis of crypts
Morphologic diagnosis and etiology
Chronic necrotizing colitis
Salmonellosis
See fibrosis at base of necrotic lesions
What type of oral neoplasm is this?
What are the three explanding components?
Periodontal fibromatous epulis
Periodontal ligament, cellular cementum, cell rests of Malassez
What type of oral neoplasm is this?
What type of inflammation is present?
Squamous cell carcinoma
Supparative
Name the organ, pathology and etiology
Lymph node
Lymphoid atrophy d/t canine distemper virus
See reduced cell density of entire LN
Name the organ, pathology and etiology
Lymph node
Lymphadenomegaly d/t multicentric lymphoma
See lymphocytes beyond capsule, white pulp expanded with lymphocytes - can’t differentiate B or T cell origin
Name the organ and morphologic diagnosis.
What is the structure in the center marked by macrophages?
Retropharyngeal LN
Chronic pyogranulomatous lymphadenitis
Abscess
Name the organ and pathologies present.
Lymph node
Lymphoid hyperplasia and squamous cell carcinoma
Name the pathology present in this section of the lymph node
Lymphoid hyperplasia - both B and T cells expanded
Name the pathology present in this section of the lymph node.
Squamous cell carcinoma
Name the organ and diagnosis
Spleen
Hemangiosarcoma
Morphologic diagnosis and gross pathology
Chronic bronchopneumonia
Cranioventral - mild atelectasis and aspiration pneumonia
Morphologic and etiologic diagnoses with causative agent
Morphologic: acute locally extensive fibrinous bronchopneumonia
Etiologic: Pneumonic Pasteurellosis
Causative agent: Mannheimia Haemolytica
Pneumonic pasteurellosis:
What does the alveolar space contain?
Fibrin, neutrophils, oat cells
Oat cells = necrotic neutrophils
Pneumonic pasteurellosis:
What is this image?
Thrombus in pulmonary artery
Pneumonic pasteurellosis:
What do you note about the interlobular septa?
Thickened with fibrin deposition - also in alveolar and bronchiolar lumen
Morphologic and etiologic diagnoses.
What is the arrow pointing to?
Morphologic: Acute multifocal necrotizing bronchitis, bronchiolitis and interstitial pneumonia with intralesional IN inclusions
Etiologic: EHV-1
Arrows = intranuclear inclusions
Morphologic diagnosis and cause
Morphologic: acute diffuse interstitial pneumonia
Cause: moldy sweet potatoes (4-ipomeanol)
See type 2 epithelial cell hyperplasia, bronchiolar epithelial necrosis, acute interstitial pneumonia and edema
Morphologic diagnoses and etiology
Morphologic diagnoses: chronic lymphocyte bronchiolitis and mild alveolar emphysema
Etiology: equine heaves
See sm hypertrophy, peribronchiolar lymphocytes, mucus in bronchioles, bronchiole epithelial hyperplasia
Morphologic and etiologic diagnoses.
Which area is more severe?
Morphologic: acute bronchitis, patchy interstitial pneumonia and bronchopneumonia
Etiologic: respiratory syncytial virus
Cranioventral
What is the arrow pointing to?
Etiologic diagnosis based on this finding.
Multinucleated alveolar syncytial epithelial cell with inclusion
Respiratory syncytial virus
What is the arrow pointing to?
Etiologic diagnosis based on this finding.
Bronchiole lined with syncytial epithelial ells and necrotic cells/neutrophils in lumem
Respiratory syncytial virus
Morphologic diagnosis
Chronic lymphocytic interstitial pneumonia
