Metastatic tumor of the hand of unknown primary origin

Acral metastases in the hand are exceedingly rare. We present the unusual case of a metastatic tumor of the hand of unknown primary site in a 77-year-old man with no known cancer history. The patient presented with pain and swelling in the tip of the left ring finger, which had previously been diagnosed as gout at another clinic. Laboratory tests, including white blood cell count, erythrocyte sedimentation rate/C-reactive protein, and uric acid were all within normal limits. Excisional biopsy was taken by amputation of the distal phalanx of the left ring finger through the distal third of the middle phalanx. Pathology confirmed the presence of a moderately differentiated adenocarcinoma of unknown primary site. Roentgenographic examination of the chest revealed no pathologic findings. The patient refused further investigation and adequate treatment. He died 4 months later. The current description confirms the rarity of metastatic malignancy of the hand and its poor prognosis.

Abstract licence: CC BY-NC

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