The aim of the present study was to determine the morphologic and histopathologic characteristics of tumors observed in samples from moribund Capoeta capoeta. For this purpose, ten fish, captured from the Fırat River located in southeastern Anatolia of Turkey, were examined for gross malformations and histopathological morphology. Externally, two different morphological types of tumours were detected in the anus region and on the ventral part of the operculum of one of the examined fish. In this study, tumours in a moribund fish were identified as benign because they were well differentiated, non‐infiltrative and non‐metastatic. In the histological examination, the external growth located in the ventral region of the operculum was characteristic of a papilloma showing exophytic inverted development. This is our first report on both melanomacrophage and green fibrils in the papilloma. The other observed pathological growth, covered with hemorrhagic skin and located near the anus, was characteristic of a benign tumour (subcutaneous lipoma) which constituted typical adipocytes. Thus, our study detected two different types of benign tumours in Capoeta capoeta, and it is the first time being reported in a cyprinid species

中文翻译：

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Capoeta capoeta中两种不同良性肿瘤的组织病理学特征

本研究的目的是确定垂死的Capoeta capoeta样品中观察到的肿瘤的形态学和组织病理学特征。为此，检查了从位于土耳其安纳托利亚东南部的费拉特河捕获的十条鱼的总体畸形和组织病理学形态。在外部，在其中一只被检查的鱼的肛门区域和the腹侧部分检测到两种不同形态的肿瘤。在这项研究中，垂死鱼类中的肿瘤被鉴别为良性的，因为它们具有良好的分化，非浸润性和非转移性。在组织学检查中，位于the的腹侧区域的外部生长是乳头状瘤的特征，表现为外生倒置的发育。这是我们对乳头状瘤中黑色素巨噬细胞和绿色原纤维的首次报道。另一个观察到病理生长，覆盖有出血性皮肤并且位于肛门附近，其特征是构成典型的脂肪细胞的良性肿瘤（皮下脂肪瘤）的特征。因此，我们的研究发现了两种不同类型的良性肿瘤Capoeta capoeta，这是塞浦路斯的一个物种中的第一次报道