PCNA and neoplasm: Tumor presence was associated with increased expression of <i>LH</i> and <i>FSH</i> receptors and <i>c-KIT</i>, while angiogenic and proliferative factors (<i>PCNA</i>, <i>Ki-67</i>, <i>IGF-1</i>, <i>VEGF</i>, and <i>ERα</i>) showed lower expression.