I have a lump on my armpit that looks like a line. I think I've had it for as long as I can remember, and I'm only 17. Could it be cancerous? -
![I noticed a red lump under my dogs armpit about a week ago. I've been monitoring it and today when I got home from work I noticed it... | PetCoach I noticed a red lump under my dogs armpit about a week ago. I've been monitoring it and today when I got home from work I noticed it... | PetCoach](https://cf-s3.petcoach.co/question_photo_normal_thumb/uploads/questions/488527/images/34191e2ed5a032fc646a22ffa8a7fd7e42eb76c6.jpeg)
I noticed a red lump under my dogs armpit about a week ago. I've been monitoring it and today when I got home from work I noticed it... | PetCoach
![Skin concern] I have this bump on my armpit and I'm not sure if I should be concerned or if it is normal : r/SkincareAddiction Skin concern] I have this bump on my armpit and I'm not sure if I should be concerned or if it is normal : r/SkincareAddiction](https://external-preview.redd.it/2swA0j42ZymIkiZDC5SFJH7OW6yelMbUCV1W2Wu2DRc.jpg?auto=webp&s=d4d2b289052e1a29d2ac0f42e66464df5d9f4806)