The umbilical clue: recognizing Sister Mary Joseph’s nodule

<i>Clinical significance:</i> Sister Mary Joseph's nodule (SMJN) represents a rare but important clinical sign of metastatic intra-abdominal or pelvic malignancy, often indicating advanced disease.<i>Clinical awareness:</i> Heightened awareness of umbilical lesions among clinicians is essential, particularly in elderly patients presenting with nonspecific systemic symptoms such as weight loss, asthenia, or abdominal pain.Early diagnosis of SMJN is essential, as it frequently signifies advanced metastatic disease. Prompt recognition allows timely initiation of appropriate therapy or palliative care to optimize patient outcomes.