PathLab

Question 1

1. Morphologic Diagnosis

Answer 1

1. bone marrow (long bone/femoral diaphyseal), serous atrophy of bone marrow fat/adipose tissue, diffuse

Question 2

1. morphologic diagnosis
2. Given the distribution of this lesion, what was the most likely route of entry?
3. Most likely etiologic agent (think broad)?

Answer 2

1. lungs, bronchopneumonia, suppurative, cranioventral
2. aerogenous/aspiration/inhalation
3. bacteria

Question 3

1. morphologic diagnosis
2. What is the term used to describe the sequela of hemopericardium?

Answer 3

1. Right heartbase/auricle:

Hemangiosarcoma: why?

metastases in the lungs

Hemangioma

Hematoma

2. cardiac tamponade

Question 4

1. Give two differential/morphological diagnoses - assume that lesion in neoplastic for one and inflammatory for the other
2. If this lesion is neoplastic, is it more likely to be primary or secondary (metastatic)? why?

Answer 4

1. liver, hepatocellular carcinoma, focal

liver, hepatitis, granulomatous, focal

2. primary

solitary, large, well-circumscribed

Question 5

1. morphologic diagnosis
2. What is the chronicity of this lesion [general category]?

Answer 5

1. lungs, pleuritis (pleurapneumonia), fibrinous (fibronosuppurative), diffuse/widely disseminated
2. acute [fibrinous = acute and fibrous = chronic]

Question 6

1. Morphological Differential Diagnosis for Spleen

Answer 6

1. hemangiosarcoma

hemangioma

hematoma

(nodular) hyperplasia

Question 7

1. morphologic diagnosis
2. differential diagnosis

Answer 7

1. lung, metastatic carcinoma, multi-focal (widely disseminated)
2. pyogranulomatous pneumonia (FIP)

granulomatous pneumonia (systemic fungal or mycobacterial infection)

Question 8

1. Morphologic Diagnosis

Answer 8

1. stomach (nonglandular/squamous portion), ulcers (or ulcerative gastritis), multifocal

Question 9

1. morphologic diagnosis

Answer 9

1. brain, hydrocephalus, diffuse

Question 10

1. morphologic diagnosis
2. common name
3. common underlying cause
4. difference between clot and thrombus

Answer 10

1. abdominal aortic trifurcation, thromboembolism, locally extensive/focal
2. saddle thrombus/thromboembolism
3. hypertrophic cardiomyopathy (HCM)
4. clot - postmortem, red, slippery, glistening, gelatinous

thrombous - antemortem, dry/crumbly, adhered to the blood vessel wall

Question 11

1. morphologic diagnosis
2. common name
3. most of these cases are idiopathic in cats - but there are some conditions that predispose them - what are they?

Answer 11

1. liver, hepatic lipidosis, diffuse
2. fatty liver
3. anorexia in an obese cat

diabetes mellitus

Question 12

1. morphologic diagnosis
2. cause
3. potential sequelae

Answer 12

1. aorta (cranial mesenteric artery), endarteritis, granulomatous/eosinophilic (proliferative/necrotizing), locally extensive; (with intralesional nematode larvae)
2. strongylus vulgaris
3. aneurysm, rupture of blood vessel –> hemoabdomen

Question 13

1. morphologic diagnosis (1 word)

Answer 13

1. hemothorax

Question 14

1. what is abnormal
2. name them

Answer 14

1. presence of stomach bots within the lumen of the stomach
2. gasterophilus intestinalis

Question 15

1. morphologic diagnosis
2. name the syndrome

Answer 15

1. large colon, hypoplasia (aganglionosis), segmental
2. lethal white foal syndrome

Question 16

1. morphologic diagnosis

Answer 16

1. gastrointestinal (intestines) adhesions (firbous), multifocal to coalescing

Question 17

1. morphologic diagnosis
2. pathogenesis (don’t worry too much about this one)

Answer 17

1. mandibular osteomyelitis, suppurative, locally extensive (tooth root abscess)

2.

Question 18

1. morphologic diagnosis
2. potential causes

Answer 18

1. colon, fibrinonecrotic colitis (with fibrin and necrosis)

(pseudomembranosus vs. diptheritic - i think this one is pseudomembranosus)

Question 19

1. morphologic diagnosis (for the liver)
2. differential diagnosis
3. If this lesion were inflammatory rather than neoplastic, what would be the most likely morphologic diagnosis?

Answer 19

1. liver, plasma cell tumor, multifocal
2. lymphoma, mast cell tumor, histiocytic sarcoma
3. liver, hepatitis, granulomatous, multifocal

Question 20

1. morphologic diagnosis
2. what are the possible etiologies?
3. What is the difference between erosion and ulcer?

Answer 20

1. oral mucosa, necrosis with erosions and ulcerations (necro-suppurative stomatitis), locally extensive
2. see pic

Question 21

1. morphologic diagnosis
2. What are the 3 different categories?

Answer 21

1. icterus

Question 22

1. morphologic diagnosis
2. scientific name

Answer 22

1. nasal cavity and nasopharynx, intraluminal nasal bots (fly larvae), multifocal
2. cephenemyia sp.

Question 23

1. morphologic diagnosis
2. scientific name

Answer 23

1. frontal sinus nematodiasis, focally extensive
2. skrjabingylus sp.

Question 24

1. morphologic diagnosis
2. possible etiologies

Answer 24

1. lung, granulomatous pneumonia, multifocal (to coalescing)
2. fungal infection (eg aspergillosis)

bacterial infection (mycobacteriosis)

foreign body reaciton

parasitic infection

Question 25

1. morphologic diagnosis
2. etiologic agent

Answer 25

1. liver, hepatitis, granulomatous, multifocal
2. fascioloides magna

Question 26

1. morphologic diagnosis
2. cause
3. common name of disease

Answer 26

1. spleen, necrosis, multifocal
2. adenovirus type 2 infection
3. marble spleen disease