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.
Dysplastic (atypical, Clark) melanocytic nevi are acquired pigmented melanocytic proliferations of the skin with distinct clinical and histologic features. In the appropriate clinically setting dysplastic (atypical, Clark) melanocytic nevi are cutaneous markers for the development of familial and nonfamilial melanomas.ysplastic (atypical, Clark) melanocytic nevi may be considered intermediate lesions of tumor progression, as approximately 30% of melanoma arise in association with a precursor nevus, most commonly a dysplastic nevus.