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Lingual thyroid presenting as acquired hypothyroidism in the adulthood
1The Second Department of Internal Medicine, The Jikei University School of Medicine, Tokyo.
Internal Medicine (Tokyo, Japan)
|June 18, 1998
Summary
Lingual thyroid, a rare ectopic thyroid condition, typically affects children and causes congenital hypothyroidism. This report details an unusual adult male case with late-onset hypothyroidism, presenting without typical symptoms and allowing a normal life.
Area of Science:
- Endocrinology
- Genetics
- Pediatric Medicine
Background:
- Lingual thyroid is a rare congenital anomaly where thyroid tissue is found at the base of the tongue.
- Ectopic thyroid glands are often functionally deficient, leading to hypothyroidism, particularly in pediatric cases.
- Congenital hypothyroidism (cretinism) is a common consequence of untreated thyroid deficiency in infants.
Observation:
- This report presents an exceptionally rare case of lingual thyroid in an adult male.
- The patient developed hypothyroidism in adulthood, with the anomaly remaining asymptomatic and undetected.
- The condition did not impede the patient's ability to lead a normal life.
Findings:
- Lingual thyroid can manifest in adulthood with late-onset hypothyroidism.
- Asymptomatic presentation is possible, even in adult cases of lingual thyroid.
- The functional impact of lingual thyroid may vary, not always leading to severe or early-onset hypothyroidism.
Implications:
- Highlights the importance of considering ectopic thyroid tissue in differential diagnoses, even in adults presenting with hypothyroidism.
- Suggests that lingual thyroid may have a broader clinical spectrum than previously recognized, including asymptomatic adult cases.
- Underscores the need for further research into the long-term outcomes and management strategies for adult lingual thyroid patients.