Thompson D J, Cave N J, Scrimgeour A B, Thompson K G
Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11222, Palmerston North 4442 , New Zealand.
N Z Vet J. 2011 Nov;59(6):332-6. doi: 10.1080/00480169.2011.609479.
Abstract
A 5-year-old male neutered Labrador Retriever Afghan crossbred dog was examined after collapsing. The dog was recumbent, dyspnoeic and mildly tachypnoeic. There was a tachyarrhythmia (300 beats per minute) and subcutaneous oedema of the ventral neck and right forelimb.
The dog had a sustained ventricular tachycardia originating in the right ventricle and on echocardiography a mass was identified in the interventricular septum. Due to the poor prognosis the owners agreed to euthanasia of the dog.
A reddish-grey mass was found in the interventricular septum and smaller red foci found scattered throughout the myocardium. There was a single, raised, splenic nodule with several smaller red foci within the splenic parenchyma. Hepatic congestion, pancreatic oedema, ascites and subcutaneous oedema of the right forelimb and neck were present. Sections of the splenic nodule, interventricular septal mass and both ventricular-free walls showed neoplastic mesenchymal cells.
Haemangiosarcoma of the myocardium and spleen with right-sided congestive heart failure.
This case report describes an atypical location for haemangiosarcoma. The investigation supports the use of echocardiography as a component of the protocol for staging haemangiosarcoma even in the absence of apericardial effusion. It also provides further evidence for the inclusion of intracardiac neoplasia as a differential diagnosis for dogs with unexplained cardiac arrhythmias.
摘要
一只5岁已绝育的拉布拉多寻回犬与阿富汗猎犬的杂交雄性犬在倒地后接受检查。该犬呈卧位，呼吸困难且轻度呼吸急促。存在快速心律失常（每分钟300次心跳）以及颈部腹侧和右前肢的皮下水肿。
该犬患有起源于右心室的持续性室性心动过速，超声心动图检查发现室间隔有一个肿块。由于预后不良，主人同意对该犬实施安乐死。
在室间隔发现一个红灰色肿块，在心肌中散在分布着较小的红色病灶。脾脏有一个单一的、隆起的结节，脾实质内有几个较小的红色病灶。存在肝充血、胰腺水肿、腹水以及右前肢和颈部的皮下水肿。脾脏结节、室间隔肿块以及两个心室游离壁的切片显示有肿瘤性间充质细胞。
心肌和脾脏血管肉瘤伴右侧充血性心力衰竭。
本病例报告描述了血管肉瘤的非典型位置。该研究支持即使在没有心包积液的情况下，将超声心动图作为血管肉瘤分期方案的一部分使用。它还为将心脏内肿瘤作为不明原因心律失常犬的鉴别诊断提供了进一步证据。
