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Thyroid Gland - Cyst, Congenital - Gallery

Image of cyst, congenital in the thyroid gland from a female F344/N rat in a chronic study
Thyroid gland - Cyst, Congenital in a female F344 rat from a chronic study. An enlarged follicle is present (arrow).
Image of cyst, congenital in the thyroid gland from a female F344/N rat in a chronic study
Thyroid gland - Cyst, Congenital in a female F344 rat from a chronic study. Higher magnification of the enlarged follicle in Figure 1 shows the ciliated epithelium lining part of the follicle.
Image of cyst, congenital in the thyroid gland from a male B6C3F1 mouse in a chronic study
Thyroid gland - Cyst, Congenital in a male B6C3F1 mouse from a chronic study. A cystic follicle containing keratinized material is present.
Image of cyst, congenital in the thyroid gland from a male B6C3F1 mouse in a chronic study
Thyroid gland - Cyst, Congenital in a male B6C3F1 mouse from a chronic study. There is a cystic follicle containing keratinized material.
NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.