In this task you are given a medical question pair hand-generated. Your task is to classify a given post into two categories 1) 'Similar' if the given two questions have a same connotation 2) 'Dissimilar' if the given two questions have a different connotation or meaning.

Q: Sentence1: Does lung cancer always effect oxygen levels. 
 Sentence2: I was diagnosed with lung cancer and I have been on therapy. My oxygen saturation levels have been around 90% and I am worried if this is ever going to improve. Should I ask my doctor if therapy needs to be changed?

A: Dissimilar
****
Q: Sentence1: I've had this bruise on my thigh for at least two months, and it still hasn't healed. Could it be skin cancer? 
 Sentence2: I injured by wrist and there is pain, swelling, redness and bruise. Did I fracture my hand?

A: Dissimilar
****
Q: Sentence1: Does anyone know what to do with a child around the age of 13 who suffers from serious anxiety? 
 Sentence2: Does anxiety present differently in teens vs adults?

A:
Dissimilar
****