{Reference Type}: Journal Article
{Title}: Rare Presentation of Papillary Carcinoma Within a Sentinel Lymph Node in a Patient With Ductal Carcinoma in Situ of the Breast: A Challenging but Useful Case Report Discussion Regarding Displacement or True Metastasis?
{Author}: Sonam F;Komforti MK;Jakub JW;Cornell LF;Robinson KA;
{Journal}: Int J Surg Pathol
{Volume}: 0
{Issue}: 0
{Year}: 2024 Mar 18
{Factor}: 1.358
{DOI}: 10.1177/10668969241235316
{Abstract}: Papillary carcinoma of the breast is a rare histologic subtype of invasive breast cancer. In contrast, ductal carcinoma in situ (DCIS) is a noninvasive, nonobligate precursor to invasive mammary carcinoma, confined within the terminal duct lobular unit of the breast and surrounded by an intact myoepithelial cell layer at the stromal/epithelial interface. We present an unusual case in which a patient with only DCIS of the breast exhibited papillary carcinoma within a sentinel lymph node, leading to questions about the origin of the lymph node lesion-whether it represents a true metastasis or iatrogenic displacement during diagnostic procedures. This case underscores the diagnostic challenges and clinical implications associated with such rare presentations.