Peritoneum (LS) Flashcards

1
Q

List the 3 routes of infection that cause Peritonitits.

A
  • direct → perforating lesions
  • hematogenous
  • release of bile or pancreatic enzymes
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2
Q

List the 6 types of Peritonitis

A
  • Fibronous
  • Fibrinohemorrhagic
  • Suppurative
  • Pyogranulomatous
  • Granulomatous
  • Chemical
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3
Q

Etiology of Fibrinous Peritonitis

A
  • FIP
  • Mycoplasma hyorhinis
  • Glasser’s Dz (Hemophilus spp.)
  • Blackleg
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4
Q

Lesions of Fibrinous Peritonitis

A
  • yellow sheets & strands of fibrin adhered to viscera
  • excess serous to serosangiuneous fluid in the cavity
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5
Q

Sequelae of Fibrinous Peritonitis.

A
  • complete resolution
  • healing w/ fibrous adhesions
  • Septicemia → death
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6
Q

When is Fibrinohemorrhagic peritonitis often seen?

A
  • Most cases of Clostridial hemoglobinuria
  • some cases of blackleg & septicemic pastuerellosis
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7
Q

4 Causes of Suppurative Peritonitis

A
  • contaminated wound (post castration)
  • contaminated abdonimal SX
  • ruptured organs
  • “Hardware Dz”
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8
Q

Lesion of Suppurative Peritonitis

A
  • red peritoneum w/ deposits of pus
  • scattered abscesses
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9
Q

Sequelae of Suppurative Peritonitis

A
  • Recovery if abscess is walled off
  • chronic infection & emaciation
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10
Q

Suppurative Peritonitis in Horses?

A
  • almost always fatal
  • Most commonly due to rupture or performation of stomach or intestine
  • R. equi in foals w/ infected umbilicus
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11
Q

What 2 agents cause very characteristic pyogranulomatous or granulomatous peritonits in Dogs?

A
  • Nocardia
  • Actinomyces
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12
Q

What causes pyogranulomatous peritonitis in Cats?

A

FIP

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13
Q

Pearl Dz. (TB) causes what form of peritonitis?

A

Granulomatous peritonitis

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14
Q

3 Exogenous causes of Chemical Peritonitis?

A
  • Intraperitoneal injections
  • SX glove powder
  • accidental spillage of barium sulfate
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15
Q

3 Endogenous causes of Chemical Peritonitis?

A
  • bile & pancreatic enzymes
  • leakage of chyle from a ruptured lymphatic
  • cystitis & rupture of urinary bladder
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16
Q

Sequelae of Peritonitis?

A

death from septicemia

17
Q

Lesions of abdominal fat necrosis?

(2)

A
  • foci of white, necrotic adipose tissue surrounded by zone of intense hyperemia w/ fibrin deposits
  • chicken soup peritoneal fluid
18
Q

List the 3 types of abdominal fat necrosis.

A
  • Pancreatic
  • Focal necrosis→ sheep
  • massive necrosis (lipomatosis) → cattle
19
Q

Lipomatosis if most frequently reported in what type of cattle?

A
  • Channel Island breeds - Jersey, Guernsey and the Alderney.
  • excessively fat cattle
20
Q

Lesions of “Wet” form of FIP

(Cornavirus)

A

extensive fibrin & fluid accumulation in the abdomen

21
Q

Lesions of “Dry” form of FIP?

A

scattered, white foci of pyogranulomatous inflammaton on the surface & extending into the viscera

22
Q

Common lesions of FIP?

A

May have:

  • pleuritis
  • ophthalmitis
  • meningitis
23
Q

List the Primary Neoplasms of the Peritoneum

(5)

A
  • Mesotheliomas → cattle & dog
  • Lipomas→ horse & dog
  • Myxomas
  • Fibromas
  • Neurofibromatosis →cattle
24
Q

Lipomas in Horses orginate from where? Consequences?

A
  • mesentary
  • pedunculated
  • may reach enormous size → acute strangulation obstruction of the intestine
25
Q

Lipomas in Dogs arise from where?

A
  • omentum
  • non-pedunculated
  • settle on abdominal floor
26
Q

4 Gross Lesions of Mesotheliomas

A
  • multiple, firm sessile or pedunculate nodules
  • villous projections
  • milky or bloody effusion
  • ascites