Dent in Leg

i met this lady in the gym today, she’s about 35 years old, and she asked me a question i have never heard/seen before. she claims that 6 months ago she slammed the anterior portion of her thigh into her bed post. she immediately recieved a large swollen bruise. however, once the bruise and swelling subsided, she noticed a 1/2 deep indentation on her quad. it’s not muscle definition from the working out cause i looked at it for her, it is literally like somebody took a bite out of the meat of her quad. any ideas?