Question: A 44-year-old patient who suffers a traumatism due to a high intensity traffic accident. Upon admission to the hospital, he is conscious and oriented and manifests pain at the cervical and pelvic level as well as functional impotence in the right lower limb. The physical examination reveals a blood pressure of 100/60 mmHg with 100 beats / minute, an abolition of the vesicular murmur in the lower third of the right hemithorax and dullness to the percussion thereof. The chest radiograph shows a right pleural effusion, also in the lower third. Which of these statements do you think is correct? 
 Options:  <1> It is a large pulmonary hemorrhage so the patient must be operated on urgently by thoracotomy. <2> Since it is an intrathoracic hemorrhage, spontaneous hemostasis is expected, so no therapeutic measures are indicated. <3> Drainage of the pleural cavity with a heavy gauge catheter and monitoring of the patient is indicated. <4> The simple needle-evacuator with needle is the treatment of choice. <5> It is most likely a chylothorax, so a treatment with restriction of heavy chain triglycerides should be established.
3