Oligo-Metastatic Ductal Breast Carcinoma Presenting as a Subcutaneous Nape Nodule: A Case Report

Breast cancer (BC) in females is the most diagnosed cancer and the leading cause of cancer death in women worldwide, followed by lung, colorectal, and cervical cancers. For oligo-metastatic (OM) cancers, the best definition is a maximum of five metastatic foci, not necessarily located in the same organ or anatomic region, all potentially treatable by ablative local treatment: either surgical resection or radiation when accessible. Oligo-metastatic breast cancer (OM-BC) is currently arising as an emerging entity with more focused research needed to upgrade the guidelines for best management. Given the heterogeneous nature of BC metastasis, evolving molecular mechanisms have been shown to play a lead way for possible future-guided preventive therapy. Soft tissue metastases are particularly very rare and usually seen arising in subcutaneous fat, fascia, or muscle fibers. They can be confused with a primary soft tissue sarcoma and hence it is important to obtain an accurate differential diagnosis. We hereby present a case of OM-BC presenting as a metastatic soft tissue nodule in the nape in a 73-year-old Kuwaiti lady diagnosed with left breast cancer in 2016 (ductal type) with otherwise free metastatic workup in our practice at Kuwait Cancer Control Center (KCCC).