A 54-year-old man presents with loss of sympathetic innervation to the left side of his head, characteristic of Horner syndrome. An MRI revealed a left-sided pulmonary sulcus tumor with a location approximated by the black dot to which the arrow is pointing in the given photo. What structure is most likely compromised by the tumor? (A) Cervical anterior roots (B) Thoracic posterior primary rami (C) Thoracic posterior roots (D) Thoracic anterior roots (E) Thoracic gray rami communicantes

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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A 54-year-old man presents with loss of sympathetic
innervation to the left side of his head, characteristic of Horner
syndrome. An MRI revealed a left-sided pulmonary sulcus
tumor with a location approximated by the black dot to which
the arrow is pointing in the given photo. What structure is
most likely compromised by the tumor?
(A) Cervical anterior roots
(B) Thoracic posterior primary rami
(C) Thoracic posterior roots
(D) Thoracic anterior roots
(E) Thoracic gray rami communicantes
Transcribed Image Text:A 54-year-old man presents with loss of sympathetic innervation to the left side of his head, characteristic of Horner syndrome. An MRI revealed a left-sided pulmonary sulcus tumor with a location approximated by the black dot to which the arrow is pointing in the given photo. What structure is most likely compromised by the tumor? (A) Cervical anterior roots (B) Thoracic posterior primary rami (C) Thoracic posterior roots (D) Thoracic anterior roots (E) Thoracic gray rami communicantes
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