The upper panel shows a sonogram of a Day 7 ovary, the lower panel a Day 10 ovary. Each ovary has a cavity, also called lacuna, which is a normal fluid filled cavity. These a frequently referred to as "cystic" CLs, perhaps an unfortunate term because they are normally functioning corpora lutea secreting the same amount of progesterone as a solid CL, hence no treatment is indicated. On palpation these hollow, or cavitated CL feel rounder and can be mistaken for a luteal cyst. They can be differentiated by determination of the progesterone concentration or by ultrasonography.

Ovaries on days 7 and 10

Credit: Pieterse MC (1999)

Digital Credit: Maarten Drost

Publisher: None

Rights: Name must appear as a credit whenever the image is used -

Description: The upper panel shows a sonogram of a Day 7 ovary, the lower panel a Day 10 ovary. Each ovary has a cavity, also called lacuna, which is a normal fluid filled cavity. These a frequently referred to as "cystic" CLs, perhaps an unfortunate term because they are normally functioning corpora lutea secreting the same amount of progesterone as a solid CL, hence no treatment is indicated. On palpation these hollow, or cavitated CL feel rounder and can be mistaken for a luteal cyst. They can be differentiated by determination of the progesterone concentration or by ultrasonography.

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Ovaries on days 7 and 10

Credit: Pieterse MC (1999)

Digital Credit: Maarten Drost

Publisher: None