{'fraction_non_alphanumeric': 0.022144522144522144, 'fraction_numerical': 0.005827505827505828, 'mean_word_length': 5.179856115107913, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
[Metastatic renal tumor originating from esophageal carcinoma: a case report].

A 61-year-old male, who had undergone operation of esophageal carcinoma 11 months earlier, was admitted for left flank pain and high fever. Intravenous pyelography showed a space occupying lesion in the upper half of the left kidney. Computed tomographic scan showed an irregular low density area in the upper half of the left kidney. Angiograms revealed a hypovascular mass with encasement vessels in the same site. Left nephrectomy and paraaortic lymph node biopsy was performed. Pathological examination revealed a metastatic squamous carcinoma from the esophageal carcinoma. Chemotherapy was conducted, but he died 2 months later. Autopsy revealed recurrence in the retroperitoneum, and no metastasis in the right kidney. The literature on secondary renal tumor is reviewed.