[Dyspnoea due to intrathoracic haemorrhage and haemangiosarcoma in a horse (author’s transl)].

The research article presents a case of a fourteen-year-old mare of the Gelderland breed exhibiting severe difficulty in breathing, which led to its death. Upon post-mortem examination, the cause was discovered to be a metastasized form of blood vessel cancer (haemangiosarcoma) in the left ovary, a collapsed lung (atelectasis), and blood in the chest cavity (haemothorax) likely due to a rupture in the metastasized tumors.

Research Background

• The study was conducted on a fourteen-year-old mare of the Gelderland breed that presented with severe dyspnoea, a condition characterized by difficulty in breathing.
• The horse had been treated for the same symptom before it eventually succumbed to the condition.

Post-Mortem Findings

• After the horse’s death, a post-mortem examination was conducted, which revealed multiple health conditions that had contributed to its death.
• The examination discovered the existence of haemothorax, a condition where blood gathers in the space between the chest wall and the lung. This was likely due to the rupture of previously undiscovered metastases, or the spread of disease from one organ to another.
• Apart from haemothorax, the horse had experienced atelectasis of the lung, a condition where the lung partially or completely collapses, causing further respiratory distress.
• The examination also discovered a metastasized haemangiosarcoma in the horse’s left ovary. Haemangiosarcoma is a highly invasive type of cancer that begins in the lining of blood vessels and then tends to spread quickly through the body.

Conclusion

• The researchers concluded that these health conditions resulted in severe dyspnoea and ultimately led to the horse’s death.
• The study importantly revealed that haemangiosarcoma in horses can metastasize and lead to other severe complications, such as haemothorax and lung atelectasis.