Patient Demographics
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Summary
Background: Spontaneous ovarian hyperstimulation syndrome (sOHSS) can occur following hypothyroidism. Ultrasonography facilitates diagnosis and monitoring of this syndrome. We describe ovarian sonographic changes in a hypothyroid patient with sOHSS after treatment with levothyroxine (l-T4).
Case presentation: A 15-year-old girl presented with abdominal pain and distension for a few months. On examination, she had classical features of hypothyroidism. Abdominal and pelvic ultrasound revealed enlarged ovaries with multiple thin-walled cysts and mild ascitic fluid. On follow-up, abdominal ultrasound showed significant reduction of ovary size after 6 weeks of initiation of l-T4. Normal ovary size with complete regression of ovarian cysts was seen after 4 months.
Conclusion: Serial ultrasound in sOHSS associated with hypothyroidism showed regression of ovarian cysts and ovarian volume after 4 months whereas in other studies, it is reported to happen in various durations, presumably according to its etiology.
Learning points
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OHSS can rarely occur due to hypothyroidism.
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This type of OHSS can be simply treated by l-T4 replacement, rather than conservative management or surgery in severe cases.
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Ultrasound follow-up shows significant regression of ovarian size and cysts within 6 weeks of initiation of l-T4.
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Ultrasound follow-up shows normal ovarian size with complete resolution of ovarian cysts 4 months after treatment.