QuestionSBA
QuestionChoice
The patient is presenting with Horner's syndrome, the three characteristics of which are ptosis, miosis and anhydrosis. In carotid artery dissection, there would be an additional red flag feature of neck pain.
10004838
c
Horner's syndrome as a result of carotid artery dissection
QuestionChoice
The patient is presenting with Horner's syndrome, the three characteristics of which are ptosis, miosis and anhydrosis. The mass described in the question stem is a Pancoast tumour which is a tumour originating in the apical zone of the lung. As it grows, it leads to impingement of the sympathetic chain resulting in Horner's syndrome.
10004836
a
Horner's syndrome as a result of a Pancoast tumour
QuestionChoice
Cervical ribs are osseous anomalies which would cause Horner's syndrome through the compression of the sympathetic chain. Additional symptoms which include the compression of the subclavian vein or artery would result in Thoracic outlet syndrome.
10004840
e
Horner's syndrome caused by a cervical rib
QuestionChoice
Congenital Horner's syndrome would be present with the patient from birth, and thus would not explain a newly-acquired presentation.
10004839
d
Congenital Horner's syndrome
QuestionChoice
The patient is presenting with Horner's syndrome, the three characteristics of which are ptosis, miosis and anhydrosis. Features indicative of strokes such as sudden onset and involvement of other body features such as arms and legs would be seen.
10004837
b
Horner's syndrome as a result of a stroke
Concept
Chapter
2693
4339
Horner's syndrome
Topic
132
Respiratory
13514
A 67-year-old man presents to the emergency department with a newly-acquired drooping eyelid, constricted pupil and decreased sweating on the right side of his face. He is sent for a chest X-ray, and a mass is found in the apical zone of his right lung.

Which of the following is the most likely mechanism of this patient's presentation?
a