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Clinical Problem Solving: Pathology
Oct 2011

Pathology Quiz Case 2: Diagnosis

Arch Otolaryngol Head Neck Surg. 2011;137(10):1048. doi:10.1001/archoto.2011.162-b

Diagnosis: Suspensory muscle of the thyroid (levator glandulae thyroideae [LGT])

The LGT, or suspensory muscle of the thyroid, is a fibrous or muscular band that is usually found attached superiorly to the body of the hyoid bone and inferiorly to the thyroid isthmus or pyramidal lobe. This accessory muscle was first described in 1743 and initially named the thyro-adenoidien. It ran from the inferior constrictor muscle to the thyroid gland. Then, in 1794, it was named the LGT.1 Although, to our knowledge, there have been no reports about the prevalence of the LGT in the general population, there have been anatomical studies citing its presence in select groups, specifically in southern Asia. According to Sultana et al,2 the LGT was found in 43.3% of Bangladeshi cadavers, and its presence was associated with the pyramidal lobe 84.6% of the time. According to Lehr,3 the LGT is present in 1 in 203 cases (0.49%) of ethnically mixed cadavers.

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