Glossary

Term · Feeding Your Baby

insufficient glandular tissue

Also: IGT, breast hypoplasia

Breasts with less milk-producing tissue than usual, which can limit how much milk they make. It is a physical trait, not a failing of the mother.

In plain words

Insufficient glandular tissue describes breasts that have less of the tissue that makes milk. The breasts may look widely spaced, tubular, or uneven in shape, with a large . Some people with this trait make enough milk, and others make less than they hoped. It is not caused by anything a mother did before or during pregnancy. Breast size is not a reliable guide to glandular tissue. Many mothers learn about it when milk comes in more slowly than expected, or when a baby is not gaining weight well. A can look at the breasts and the feeding together. Some families use pumping, , or formula alongside breastfeeding to meet the baby's needs.

The deeper version

Insufficient glandular tissue is a clinical description rather than a validated diagnosis, referring to breast hypoplasia with reduced secretory tissue. Breast examination features include widely spaced breasts, tubular or asymmetric shape, a large areola, and limited breast development at puberty or in pregnancy. Its association with low milk supply is most consistent in cases of marked hypoplasia and after breast surgery, and some endocrine conditions can also reduce glandular development. Glandular volume measured by ultrasound is used in research rather than in routine care. Controversy centers on how often the label is applied, and whether it reflects anatomy or the limits of the tools available to assess it (Lawrence and Lawrence, 2016).

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Sources

  • Lawrence RA, Lawrence RM — Breastfeeding: A Guide for the Medical Profession, 8th edition. Elsevier, 2016
  • La Leche League International — The Womanly Art of Breastfeeding, 8th edition

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