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| ** Over-large, anovulatory follicles | | ** Over-large, anovulatory follicles |
| * As the [[The_Ovary_-_Folliculogenesis_-_Anatomy_%26_Physiology|follicular waves]] overlap with each other, several generations of [[The_Ovary_-_Follicles_-_Anatomy_%26_Physiology|follicles]] may be present at the same time. | | * As the [[The_Ovary_-_Folliculogenesis_-_Anatomy_%26_Physiology|follicular waves]] overlap with each other, several generations of [[The_Ovary_-_Follicles_-_Anatomy_%26_Physiology|follicles]] may be present at the same time. |
− | * The small growing follicles are visible on the surface of the ovary as small slightly raised vesicles measuring between 2 - 4 mm, whereas the mature pre-ovulatory follicle measures between 13 - 20 mm [19,20] and is spherical, turgid, with a thin clear translucent wall and protrudes markedly from the ovarian surface. | + | * The small growing follicles are visible on the surface of the [[Female_Reproductive_Tract_-The_Ovary_-_Anatomy_%26_Physiology|ovary]] as small slightly raised vesicles measuring between 2 - 4 mm, whereas the mature pre-ovulatory follicle measures between 13 - 20 mm [19,20] and is spherical, turgid, with a thin clear translucent wall and protrudes markedly from the [[Female_Reproductive_Tract_-The_Ovary_-_Anatomy_%26_Physiology|ovarian surface]]. |
| * The appearance of regressing follicles depends on the stage of regression. | | * The appearance of regressing follicles depends on the stage of regression. |
− | ** At the start of regression the follicular wall becomes thick and opaque and the diameter decreases slowly until the follicle recedes into the ovary itself. | + | ** At the start of regression the follicular wall becomes thick and opaque and the diameter decreases slowly until the follicle recedes into the [[Female_Reproductive_Tract_-The_Ovary_-_Anatomy_%26_Physiology|ovary]] itself. |
| ** Large anovulatory follicles are present in about 50% of non-mated females and their size and appearance can be highly variable. | | ** Large anovulatory follicles are present in about 50% of non-mated females and their size and appearance can be highly variable. |
| *** They vary in size from 25 - 60 mm and may have a thin or thick, opaque wall and contain either serous or haemorrhagic fluid with various amounts of fibrin. | | *** They vary in size from 25 - 60 mm and may have a thin or thick, opaque wall and contain either serous or haemorrhagic fluid with various amounts of fibrin. |