Ectopic multinodular goitre. 1998

Y T Pang
Department of Otolaryngology, National University Hospital, Singapore.

A 61-year-old man presented with a slowly enlarging lateral neck mass. There was no other associated ENT symptoms. Clinical examination was unremarkable. The pan endoscopy was normal. The mass when excised was found to be subplatysmal. The histology was that of a multinodular thyroid tissue. Subsequent investigations showed normally placed thyroid with multinodular changes. Laterally placed thyroid tissue have been reported since the 18th century. Initially, they were found to contain malignant tissue and hence the term lateral aberrant thyroid tumours. In later years, benign ectopic thyroid tissue was described in the lateral neck. It is now felt that ectopic thyroid tissue are derived from thyroid cell rests that have failed to fuse with the main thyroid tissue during development. They are subjected to the same goitrogenic stimulation as the normally placed thyroid tissue. Our case supports the view that not all laterally placed thyroid tissue are malignant.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009135 Muscular Diseases Acquired, familial, and congenital disorders of SKELETAL MUSCLE and SMOOTH MUSCLE. Muscle Disorders,Myopathies,Myopathic Conditions,Muscle Disorder,Muscular Disease,Myopathic Condition,Myopathy
D009334 Neck Muscles The neck muscles consist of the platysma, splenius cervicis, sternocleidomastoid(eus), longus colli, the anterior, medius, and posterior scalenes, digastric(us), stylohyoid(eus), mylohyoid(eus), geniohyoid(eus), sternohyoid(eus), omohyoid(eus), sternothyroid(eus), and thyrohyoid(eus). Muscle, Neck,Muscles, Neck,Neck Muscle
D002828 Choristoma A mass of histologically normal tissue present in an abnormal location. Aberrant Tissue,Ectopic Tissue,Heterotopic Tissue,Aberrant Tissues,Choristomas,Ectopic Tissues,Heterotopic Tissues,Tissue, Aberrant,Tissue, Ectopic,Tissue, Heterotopic,Tissues, Aberrant,Tissues, Ectopic,Tissues, Heterotopic
D006044 Goiter, Nodular An enlarged THYROID GLAND containing multiple nodules (THYROID NODULE), usually resulting from recurrent thyroid HYPERPLASIA and involution over many years to produce the irregular enlargement. Multinodular goiters may be nontoxic or may induce THYROTOXICOSIS. Nodular Goiter,Goiters, Nodular,Nodular Goiters
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013961 Thyroid Gland A highly vascularized endocrine gland consisting of two lobes joined by a thin band of tissue with one lobe on each side of the TRACHEA. It secretes THYROID HORMONES from the follicular cells and CALCITONIN from the parafollicular cells thereby regulating METABOLISM and CALCIUM level in blood, respectively. Thyroid,Gland, Thyroid,Glands, Thyroid,Thyroid Glands,Thyroids

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