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Table 2 Detailed information for cats of the control group

From: Sensitivity and specificity of a real-time reverse transcriptase polymerase chain reaction detecting feline coronavirus mutations in effusion and serum/plasma of cats to diagnose feline infectious peritonitis

cat

symptoms leading to inclusion

diagnosis

method of confirmation of diagnosis

samples available

result of RT-PCR of effusion samples

result of RT-PCR of serum/plasma samples

detected mutation

1

pleural effusion

bacterial pleuritis

bacterial culture and cytology

effusion

negative

n.d.

n.d.

2

pleural effusion

chronic kidney disease, hypertensive encephalopathy; effusion most likely due to hypervolemia

full post-mortem examination including histopathology

effusion

FIPV

n.d.

M1058L

3

pleural effusion

decompensated cardiac disease

echocardiography

effusion

negative

n.d.

n.d.

4

pleural effusion

decompensated cardiac disease

echocardiography

effusion

negative

n.d.

n.d.

5

ascites

persistent foramen ovale

histopathology

effusion

negative

n.d.

n.d.

6

pleural effusion

decompensated cardiac disease

echocardiography

effusion

negative

n.d.

n.d.

7

pleural effusion

decompensated cardiac disease

echocardiography

effusion

negative

n.d.

n.d.

8

ascites

invasive pancreatic adenocarcinoma

histology of organ samples (obtained post-mortem)

effusion

negative

n.d.

n.d.

9

pleural effusion

decompensated cardiac disease

echocardiography

effusion

negative

n.d.

n.d.

10

pleural effusion

pulmonary adenocarcinoma

full post-mortem examination including histopathology

effusion

negative

n.d.

n.d.

11

pleural effusion

carcinoma

cytology

effusion

negative

n.d.

n.d.

12

ascites

carcinoma

cytology

effusion

negative

n.d.

n.d.

13

pleural effusion

lymphoma

cytology

effusion

negative

n.d.

n.d.

14

ascites

lymphoma

full post-mortem examination including histopathology

effusion and plasma

negative

negative

n.d.

15

pleural effusion

decompensated cardiac disease

echocardiography

effusion

negative

n.d.

n.d.

16

pleural effusion, neurological signs

carcinoma

full post-mortem examination including histopathology

effusion and plasma

negative

negative

n.d.

17

pleural effusion

chronic cardiomyopathy

full post-mortem examination including histopathology

effusion

negative

n.d.

n.d.

18

fever, icterus

cholangiohepatitis

full post-mortem examination including histopathology

plasma

n.d.

negative

n.d.

19

pleural effusion

pulmonary adenocarcinoma

full post-mortem examination including histopathology

effusion

negative

n.d.

n.d.

20

pleural effusion

lymphoma

full post-mortem examination including histopathology

effusion

negative

n.d.

n.d.

21

pleural effusion and ascites

malignant round cell tumor

cytology

effusion

BLD

n.d.

n.d.

22

pleural effusion

lymphoma

cytology

effusion

BLD

n.d.

n.d.

23

pleural effusion

decompensated cardiac disease

echocardiography

effusion

negative

n.d.

n.d.

24

pleural effusion

bacterial pleuritis

bacterial culture and cytology

effusion

negative

n.d.

n.d.

25

ascites

cholangiocarcinoma

full post-mortem examination including histopathology

effusion

negative

n.d.

n.d.

  1. BLD feline coronavirus present, but below limit of detection, FIPV feline infectious peritonitis virus, n.d. not determined, RT-PCR reverse transcriptase polymerase chain reaction