Question 42 (part 2) · LEK · Lung cancer
Which statement is true?
- A. unilateral facial hypohidrosis is caused by the obstruction of the superior vena cava triggered by a tumour of the apex of the lung.
- B. unilateral facial hypohidrosis is caused by the infiltration of the brachial plexus by a tumour of the apex of the lung.
- C. unilateral facial hypohidrosis is caused by a cancerous process in the sympathetic trunk at the site of the stellate ganglion or above it.
- D. unilateral facial hypohidrosis is caused by the syndrome of inappropriate antidiuretic hormone secretion triggered by bronchial cancer.
- E. unilateral facial hypohidrosis is caused by myasthenia gravis in the course of bronchial cancer.
Hint
Facial sweating depends on sympathetic fibres ascending in the neck; recall the components of Horner syndrome in a Pancoast tumour.
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