Hemolymphatics Flashcards
Is this finding normal or abnormal in young animals? What about adult animals?
This is normal in young animals - hemopoietically active bone marrow
This is abnormal in adult animals - bone marrow hyperplasia
This is dog guts. Give 2 MDxs.
MDx: Icterus
(causes: pre-hepatic: hemolytic anemia, hepatic, post-hepatic: obstruct bile outflow)
MDx: Splenomegaly
(cause: increased hematopoiesis)
What is the hemolymphatic associated lesion that Canine Parvovirus-2 causes?
Bone marrow depression and lymphoid depletion
Main MDx: fibronecrotizing enteritis
From a dog
MDx?
Metastatic melanoma
From a horse
What the heck is this?
Hemangiosarcoma invading the bone marrow (gross)
Bones from a llama
MDx? Disease?
MDx: multifocal granulomatous osteomyelitis
Disease: tuberculosis
(i think etiology is Mycobacterium bovis)
From a goat
What is this?
Lymphosarcoma
[tumor replaces marrow]
From a cow
MDx? Etiology?
MDx: serous atrophy of fat
Etiology: chronic emaciation
From a dog
What is this?
Multiple Myeloma
Lymph node from dog
MDx? What do you see on histology that is abnormal?
MDx: acute lymphadenitis
Histologically will see neutrophils which are not supposed to be in the lymph nodes
From a horse
MDx? Etiology? Disease?
MDx: acute suppurative lymphadenitis
Etiology: Streptococcus equi subsp. equi
Disease: Strangles
(Bastard strangles - any other lymph nodes that are enlarged like this)
Lymph node from a sheep
MDx? Etiology?
MDx: chronic caseous lymphadenitis
Etiology: Corynebacterium pseudotuberculosis
Lymph node from an ox
MDx? Etiology? Dz?
MDx: multifocal granulomatous lymphadenitis
Etiology: mycobacterium bovis
Dz: tuberculosis
Cat
MDx? What causes this?
MDx: lymphoma (lymphosarcoma) of cranial mediastinal lymph nodes
FELV infection
What is this? Etiology?
Jowl abcess
Etiology: Streptococcus porcinus
Cow
What is this? Etiology? What does it cause?
Lymphosarcoma
Etiology: bovine leukemia virus
Can cause severe compression atrophy of the spinal cord
Mandibular LN of a cat
MDX? Etiology?
MDx: diffuse granulomatous lymphadenitis
Etiology: Cryptococcus gatti
[C. neoformans causes malacia of the brain]
From a goat
MDx? Etiology?
MDx: diffuse granulomatous lymphadenitis
Etiology: corynebacterium pseudotuberculosis
Ileum of ox
MDx? Etiology?
MDx: acute, severe, diffuse necrosis of Peyer’s patches of the ileum
Etiology: bovine viral diarrhea virus
Dog spleen
Give 2 MDxs
MDx: siderotic plaques (incidental)
MDx: nodular hyperplasia
What DDxs do you have for a meaty spleen in the dog?
Histiocytic sarcoma (mast cell tumor)
Lymphoma
Plasma cell tumor
Splenitis
Amyloidosis
Dog
What is this?
Chronic infarct: wedge shaped, light colored
[Acute: red color (classical swine fever)]
Pig spleen
MDx? Disease?
MDx: diffuse splenic congestion
Disease: african swine fever
