Another possibility that can explain the pain is pericarditis. It causes chest pain aggravated by laughing yawning and deep breathing and also causes radiation of pain to arms. Again an EKG, heat echo and chest X-ray is required. I think you should discuss these possibilities with your doctor.
Definition of atypiain medicine, atypia is an abnormality in cells tissue. If this is discovered at breast biopsy, removed 6 aug 2015 benign biopsies that show atypia indicate although the cells examined are not frankly malignant neither they entirely normal medical definition of atypism.
Benign atypical junctional melanocytic hyperplasia is characterized by a proliferation of these large cells along the dermoepidermal junction. They are dispersed at uneven intervals and are too few in number to be considered compound nevi.wenty-five of the 400 cases reviewed (6.2%) exhibited benign atypical junctional melanocytic hyperplasia. Patient ages ranged from 18 to 64 years (mean, 35 years). The male to female ratio was 1:1. Lesions were predominantly located on the face (40%) and back (32%).