在胃肠道类癌研究中,作者发现部分人肿瘤前列腺酸性磷酸酶(PAP)呈阳性反应。该酶在直肠类癌中尤为突出。由于在直肠类癌的鉴别诊断中,常常考虑到前列腺癌,因而这个发现具有临床病理学的重要性。作者对105例胃肠道类癌进行了前瞻性研究,根据组织块的可应用性选择病例。其中位于胃部者13例, In the gastrointestinal carcinoid study, the authors found that some human tumors were positive for prostate acid phosphatase (PAP). This enzyme is particularly prominent in rectal carcinoid. Since the prostate cancer is often considered in the differential diagnosis of rectal carcinoid, this finding has clinical pathological importance. The authors conducted a prospective study of 105 cases of gastrointestinal carcinoid tumors and selected cases based on the applicability of the tissue blocks. Of these, 13 were located in the stomach.