Reaction profile

The FDA adverse-event record for pr-thymus, lesion(s)

34 FDA reports name pr-thymus, lesion(s), a lower-volume reaction in the CVM extract (VeDDRA 99687). Plate stamps and neighbourhood peers follow.

#1930 of 2,481
by report volume (all reactions)
34
reports citing this reaction
100.0%
death-coded share
Dog
most-affected species
Verify with FDA CVM →

Release-over-release change

What changed in the latest FDA data snapshot

PlainBreed reconstructed the prior snapshot from dated openFDA partitions through 2025 Q4, then compared it with the 2026-07-27 openFDA export. PR-THYMUS, LESION(S) has 34 reports now versus 34 in that prior snapshot: 0 the same number of (0.0%).

Report change
+0
Death-coded reports
+0
Death-coded share
+0.0 pts

This compares reported-event counts in two source snapshots. It does not establish a change in real-world risk, product safety, or disease incidence.

Subscribe to PR-THYMUS, LESION(S) changes

FDA AER · VeDDRA plate

Code 99687 VOL-TRACE

VOL-TRACE · DEATH-HOT · LOWER-Q · PHOTO-FINISH · SPECIES-DOG · DRUG-LEAD · DESK-WIDE · BOOK-FULL

  • VOL-TRACE 34 reports
  • DEATH-HOT 100.0%
  • LOWER-Q #1930/2481
  • PHOTO-FINISH Attractiveness to mal…
  • SPECIES-DOG Dog · 14
  • DRUG-LEAD Florfenicol, Flun… · 8
  • DESK-WIDE 15 breeds
  • BOOK-FULL 8/8 fields

Nearest volume peer: Attractiveness to males (±0 reports)

Upper-third death-coded share drives the outcome stamps on this plate; volume band, corpus rank, and co-report peers follow. Not a clinical diagnosis.

Lower-volume neighbourhood around PR-THYMUS, LESION

Lower-third volume poles plus nearest peers, not a full reaction corpus board reprint.

Vomiting · highest174348Attractiveness to mal… · near34Encephalopathy NOS · near34Eyelid mass NOS · near34PR-THYMUS, LESION(S) · this …34Product tampering · near34Urinary tract neoplas… · low…10
FDA AER report volume · neighbourhood around PR-THYMUS, LESION(S)

PR-THYMUS, LESION(S): high death-coded share in the FDA AER plate

Signature read: PR-THYMUS, LESION(S)'s 100.0% death-coded share is among the highest in the openFDA reaction corpus. Report volume is lower-third scale: 34 named reports in the openFDA extract. Death-coded share is upper-third: 34 of 34 reports (100.0% of named reports). Nearest volume peer: Attractiveness to males (±0 reports). Lead species Dog (14). Lead co-reported drug Florfenicol, Flunixin (8).

Read these counts as reporting volume, not risk: per our methodology, A high death-coded share in FDA filings does not prove causation; co-reporting is voluntary temporal association only. Browse the full reactions index or the about page for how PlainBreed frames FDA CVM extracts.

Species Most Affected

Dog 14
Cattle 11
Cat 9

Breeds Most Affected

Holstein-Friesian also known as Holstein 11
Retriever - Labrador 6
Domestic Shorthair 3
Crossbred Canine/dog 2
Cat (unknown) 2
Retriever - Golden 1
Persian 1
Domestic (unspecified) 1
Spaniel - Cocker American 1
Collie - Border 1

Associated Drugs

Florfenicol, Flunixin 8
Carprofen 3
Tildipirosin 3
Cefovecin 3
Maropitant 2
Cefovecin Sodium 2
Imidacloprid + Moxidectin 2
Milbemycin Oxime + Spinosad 2
Diazepam 2
Methylprednisolone Acetate 1
Selamectin 1
Dexmedetomidine Hydrochloride 1
Moxidectin 1
Vitamin B12 1
Meloxicam 1
Praziquantel + Pyrantel 1
Amoxicillin Trihydrate; Clavulanate Potassium ( K-Clavulanate) 1
Ticarcillin Disodium, Clavulanate Potassium 1
Vaccines (Unknown) 1
Anesthetic 1

What to do with this reaction

A report does not prove a drug caused the reaction; consult a veterinarian before acting on this data.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

openFDA Animal & Veterinary Adverse Events (FDA CVM) for PR-THYMUS, LESION(S) (#1930 of 2,481 by report volume); death-coded 100.0%. PlainBreed reaction plate · death-coded share stamp 100.0% · vintage 2025.

Informational only. FDA adverse-event reports are voluntary and do not prove causation; consult a veterinarian before acting on them. Verify with FDA CVM →