PetHealthLogOpen the app
Dog Mast Cell Tumor Monitoring Tracker
Illustrative photo
Free, offline, no account · Updated July 2026

Dog Mast Cell Tumor Monitoring Tracker

Mast cell tumors can change over time and react unpredictably. Track lump size, appearance, medications, and symptoms so you and your vet can monitor changes and decide on next steps together.

Start tracking - it's free
Lump size & locationAppearance changesMedication logSymptom notes

Vet visit coming up?

Build a printable prep checklist — what to bring, what to write down, questions to ask.

Build my checklist →

Why monitoring mast cell tumors is challenging

Mast cell tumors can swell, shrink, or change appearance, making it hard to judge progress from memory alone.

Dogs may be on several medications, and keeping doses straight across weeks is easy to lose track of.

Subtle symptoms like vomiting or a flushed lump can matter, but only if you notice the pattern over time.

What the tracker actually does

Helpful supplies for monitoring at home (#ad)

As an Amazon Associate, PetHealthLog may earn from qualifying purchases.

Digital pet scale →Daily pill organizer →Recovery cone (e-collar) →

Affiliate links: as an Amazon Associate, PetHealthLog may earn from qualifying purchases at no extra cost to you. Informational only, not veterinary advice.

Get started in under a minute

  1. Measure and log each lump's size and location, adding photos when appearance changes.
  2. Record every medication dose and any symptoms like vomiting or low energy.
  3. Export your monitoring history before vet visits so your veterinarian can assess changes over time.
Open PetHealthLog

Frequently asked questions

How often should I measure my dog's lumps?
Measuring on a consistent schedule, such as weekly, makes changes easier to spot than occasional checks. The app helps you keep a steady record, while your veterinarian advises how closely to monitor a given tumor.
What changes in a lump should I report?
Sudden growth, redness, swelling, or a lump that flares and shrinks can be worth flagging. Logging measurements and photos helps you describe these changes accurately to your vet.
Why do mast cell tumors sometimes swell suddenly?
These tumors can release substances that cause local swelling or redness, which is one reason tracking appearance matters. Share your notes with your veterinarian, who can interpret what they mean.
Can I track several lumps separately?
Yes. Keeping a separate record for each lump's size and location helps you and your vet follow multiple sites without confusing them.
Does this app diagnose or treat tumors?
No. PetHealthLog only helps you organize observations. Mast cell tumors require professional diagnosis and treatment, so always work with a licensed veterinarian.

Start monitoring your dog's mast cell tumors today

Free, offline, and ready the moment you open it.

Start with PetHealthLog
Informational only - not veterinary advice. PetHealthLog helps you keep records and stay organised, but it does not diagnose, prescribe, or decide your pet's treatment. Diagnosis and any plan should be decided with a licensed veterinarian.

More free pet-health tools

Related buyer guide

Looking for product picks? Browse all PetHealthLog buyer guides → — vet-informed picks with #ad affiliate links. Always confirm the right product with your own vet.

When to contact a vet immediately

A tracker is for patterns over time — it is not for emergencies. Contact a veterinarian or an emergency clinic right away if your pet has difficulty breathing, collapses or cannot stand, has a seizure that does not stop or seizures that repeat, is straining to urinate without producing urine, has severe bleeding, or may have swallowed something toxic (see ASPCA Animal Poison Control).

Sources & further reading

PetHealthLog is a record-keeping tool, not veterinary advice. Nothing on this page diagnoses or treats any condition — always follow your own veterinarian's guidance.