A 68-year-old woman presents with complaints of abdominal discomfort, significant weight loss, and a noticeable mass around her navel. On physical examination, a firm, palpable nodule is observed at the umbilicus. Further imaging and evaluation raise concerns for an advanced intra-abdominal malignancy with metastatic spread. Question: The umbilical nodularity seen in this patient is colloquially known as:
