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Objective Methods for Breast Sensibility Testing.

Eleni Kostidou1, Martin Schmelz1, Natasha Hasemaki1

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Larger breast volume correlates with larger nipple-areola complexes but also with impaired nerve function in both small (C-fiber) and thick (Aβ-fiber) nerve fibers. This suggests potential neuropathy affecting nipple sensitivity.

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Area of Science:

  • Breast anatomy and neurophysiology
  • Sensory function assessment

Background:

  • Nipple-areola complex sensitivity is influenced by various factors.
  • Understanding these factors is crucial for breast-related research and procedures.

Purpose of the Study:

  • To objectively assess how breast volume impacts nipple-areola complex sensitivity.
  • To investigate the relationship between volumetric differences and nerve fiber function.

Main Methods:

  • Assessed mechanosensitive Aβ-fiber and mechanoinsensitive C-fiber function in 34 female volunteers.
  • Used mechanical (von Frey test) and chemical (histamine iontophoresis) stimulation.
  • Quantified flare responses using laser Doppler imaging and correlated with breast volume.

Main Results:

  • Larger nipple-areola complex area correlated with increased breast volume.
  • Increased breast volume was associated with higher mechanical thresholds.
  • Higher mechanical thresholds correlated with smaller flare responses, indicating combined small- and thick-fiber neuropathy.

Conclusions:

  • Objective sensory testing successfully quantified Aβ and C fiber function.
  • Increased breast volume is linked to larger nipples but impaired nerve function.
  • Sensory testing can aid in managing patients undergoing breast operations.