Pain from the lungs is referred to which spinal levels?

Pain from the lungs is referred to which spinal levels?

• A. T3-T4
• B. T9-T11
• C. T1-T2
• D. T5-T6

Answer: (D)

Pain from internal thoracic organs is felt in somatic body-wall regions because visceral sensory fibers converge with somatic fibers at the same spinal levels. The lungs and pleura send pain signals to the thoracic spinal cord segments, and the brain interprets that input as coming from the corresponding chest wall dermatomes. For the lungs, the relevant thoracic segments are in the mid-thoracic region, roughly around the levels that give the chest-wall dermatomes at the midline of the chest. The typical referred-pain area corresponds to about the mid-thoracic dermatomes, which aligns with T5–T6. That makes T5–T6 the best match for lung pain referral among the given options. Other levels lie either higher, lower, or outside the common pulmonary referral band, so they don’t fit as well.

Pain from internal thoracic organs is felt in somatic body-wall regions because visceral sensory fibers converge with somatic fibers at the same spinal levels. The lungs and pleura send pain signals to the thoracic spinal cord segments, and the brain interprets that input as coming from the corresponding chest wall dermatomes.

For the lungs, the relevant thoracic segments are in the mid-thoracic region, roughly around the levels that give the chest-wall dermatomes at the midline of the chest. The typical referred-pain area corresponds to about the mid-thoracic dermatomes, which aligns with T5–T6. That makes T5–T6 the best match for lung pain referral among the given options.

Other levels lie either higher, lower, or outside the common pulmonary referral band, so they don’t fit as well.