1. Vaccine or drug injection: When a kitten receives a vaccine or drug injection, it sometimes has a local injection reaction, showing a small lump or swelling under the skin. This situation usually resolves itself within a few days or weeks.
2. Lipoma: Lipoma may appear in the middle of the scapula of a kitten. It is a benign tumor and usually does not cause serious symptoms. If the lump persists or grows, you can take your kitten to the vet.
3. Tumors: There may be tumors in the middle of the scapula of kittens, which may be benign lipomas or other types of tumors or malignant tumors. If the lump continues to grow or cause other symptoms, you need to take the kitten to the vet in time.
4. Other reasons: In addition to the above reasons, the hard bag in the middle of the kitten's scapula may also be caused by other reasons, such as parasitic infection and skin diseases.
If you find a lump in the middle of the kitten's scapula, you can observe it for a few days to see if it will fade away on its own. If the hard pack persists or gets worse, you can try to give the kitten hot compress or massage to see if it can improve the symptoms. If the situation continues to improve, it is recommended to take the kitten to the veterinarian for treatment.