Finger Phalanx Metastasis from Gastric Adenocarcinoma: A Case Report and Literature Review

胃癌是消化系统常见的恶性肿瘤，常见骨转移包括脊柱、骨盆、肋骨，但手指指骨转移是一种极为罕见的临床表现。目前已知3例发表的胃癌转移至手指指骨病例。本文报道1例62岁男性患者，发现左手中指末端疼痛红肿，手指皮肤完好，结合影像学表现及患者胃癌病史，考虑胃癌骨转移可能性大，结合病理，最终诊断为胃腺癌指骨转移。通过对本病例介绍，对于胃癌患者，肢体远端出现疼痛、红肿时，特别是影像学出现肢体远端骨质破坏时，即使是罕见部位亦需考虑转移可能。Gastric cancer is a common malignant tumor of the digestive system, and common bone metastases include the spine, pelvis, and ribs, but finger phalanx metastasis is an extremely rare clinical manifestation. At present, 3 published cases of gastric cancer metastasis to the finger phalanges are known. Combined with the imaging manifestations and the patient’s history of gastric cancer, it was considered that the possibility of gastric cancer bone metastasis was high, and combined with pathology, gastric adenocarcinoma was finally diagnosed with metastasis of the finger bone. Through the introduction of this case, for gastric cancer patients, when there is pain, redness and swelling in the distal limb, especially when the distal limb bone destruction occurs on imaging, even rare sites need to be considered for metastasis.