■虽然比较少见,淋巴瘤是马最常见的造血肿瘤,多中心淋巴瘤仍然是该疾病最常见的表现。马淋巴瘤的发病机制仍然知之甚少,诊断通常在疾病的晚期得到证实,影响预后。这项研究调查了临床,病态,1例马多中心淋巴瘤的分子特征。
■在Vairão动物繁殖中心住院的5岁杂交母马,葡萄牙,突然出现眶上水肿和下颌淋巴结肿大的临床症状,发展中的发烧,面部水肿,和全身淋巴结病。由于多系统器官衰竭,在第一个临床症状出现24天后,母马最终死亡。血液和生化分析,尸检,并对受影响的组织进行显微镜和分子评估。尸检时,主要发现是多发性多结节性病变,沿口咽浆液表面分布,气管,心包,胃肠道,和肠系膜.微观上,这些包括对CD3(T细胞)表现出免疫阳性的肿瘤圆形细胞的实体增殖.基于这些发现,诊断为中度多中心T细胞淋巴瘤.
■关于马淋巴瘤的分子表征的研究仍然很少。作为一个实体本身是相当异构的,重要的是要描述物种间的特殊性,以了解其发展和行为。
UNASSIGNED: Although relatively uncommon,
lymphoma is the most prevalent haematopoietic neoplasia in horses, and multicentric
lymphoma remains the most common presentation of the disease. The pathogenesis of equine
lymphoma is still poorly understood and the diagnosis is usually confirmed at an advanced stage of the disease, compromising the prognosis. This study investigated the clinical, pathological, and molecular features of a case of equine multicentric
lymphoma.
UNASSIGNED: An apparently healthy 5-year-old crossbreed mare hospitalized at the Centre of Animal Reproduction of Vairão, Portugal, suddenly presented clinical signs of supraorbital oedema and mandibular lymph node enlargement, developing fever, facial oedema, and generalized lymphadenopathy. The mare ended up dying twenty-four days after the first clinical signs due to multisystem organ failure. Haematological and biochemical analyses, necropsy, and microscopic and molecular evaluation of affected tissues were performed. At necropsy, the main findings were multiple multinodular lesions, distributed along the serous surface of oropharynx, trachea, pericardium, gastrointestinal tract, and mesentery. Microscopically, these consisted of solid proliferations of neoplastic round cells that exhibited immunopositivity for CD3 (T cells). Based on these findings, a medium-grade multicentric T-cell
lymphoma was diagnosed.
UNASSIGNED: There is still very little research regarding the molecular characterization of lymphoma in horses. As an entity itself is quite heterogeneous, it is important to describe the interspecies particularities to understand its development and behaviour.