This document lists 12 medical cases presented at a slide seminar in January 2014, including dyshormonogenetic goiter, solid variant invasive papillary carcinoma of the breast, cribriform morular variant papillary carcinoma of the thyroid, low grade mucoepidermoid carcinoma of the lung, bilateral classical seminoma with ITGCN and persistent mullerian duct syndrome, paraganglioma, symplastic leiomyoma, malignant melanoma of the urinary bladder, cutaneous mastocytosis, hamartomatous nodule in probable androgen insensitivity syndrome, chronic tubulointerstitial nephritis secondary to crystalluria morphology favoring oxaluria, and ganglioneuroblast