To present a case of rare manifestation of metastases as multiple muscular masses.
A 52 year old male with gastric ulcer as the only history of interest went to traumatology service referring to progressive pain in the left buttock with associated mass effect when walking.
Imaging tests detected a multiple muscle mass. The biopsies showed signet ring gastric adenocarcinoma metastases.
The insidious presentation of muscular symptoms in the absence of traumatic injury, should be suspected and the possibility of a tumour assessed.