Subclinical hypothyroidism (SCH) defined as:
-Elevated TSH and normal fT4;-All self-defined subclinical hypothyroidismElevated serum TSH in association with normal total or free T4- and T3-valuesHigh-normal TSH and abnormal response to TRHElevated serum TSH with normal thyroid hormone levels, without symptoms that could be explained by overt hypothyroidism. Here, TG is linked to spindle cell hemangioma.