Double
Thyroglossal
cyst
By Dr. HAYDER MOHAMMED
ABDULNABI
ASSIS. PROF. GENERAL SURGERY DEPT.
The most common locations for a thyroglossal cyst is midline or
slightly off midline, between the isthmus of the thyroid and the
hyoid bone or just above the hyoid bone. A thyroglossal cyst can
develop anywhere along a thyroglossal duct, though cysts within the
toTreatment for a thyroglossal cyst is surgical resection, often
requiring concomitant removal of the midsection of the hyoid bone
(Sistrunk procedure), to prevent recurrence. Although generally
benign the cyst will be removed if the patient exhibits difficulty in
breathing or swallowing, or if the cyst is infected. Even if these
symptoms are not present the cyst may be removed to eliminate the
chance of infection or development of a carcinoma,[1] or for
cosmetic reasons if there is unsightly protrusion from the neck.ngue
or in the floor of the mouth are rare.
The Sistrunk procedure involves excision not only of the cyst but
also of the path's tract and branches. A removal of the central
portion of the hyoid bone is indicated to ensure complete removal of
the tract. It is unlikely that there will be a recurrence after such an
operation.
Classification3
Thyroglossal cysts (TGCs) occur in 6 different variants:
Infrahyoid cysts:
About 65% of TGCs.
Mostly found in the paramedian position.
Suprahyoid cysts:
Fewer than 20% of TGCs.
Found in the midline.
Juxtahyoid cysts:
About 15% of TGCs.
Found close to the hyoid bone.
Prognosis
The recurrence rate associated with simple excision of a thyroglossal
cyst (TGC) is approximately 50%. The recurrence rate with a formal
Sistrunk's procedure is approximately 5%.
Recurrence is approximately 3-5% and is increased by incomplete
excision and a history of recurrent infections
Intralingual cysts:
About 2% of TGCs.
Found within the tongue.
Suprasternal cysts:
Fewer than 10% of cases.
Intralaryngeal cysts:
Very rare.
These must be differentiated from other intralaryngeal lesions
Double thyroglossal cysts and the complete failure of the obliterative
process of thyroglossal duct are very rare in the literature. In this
article, we describe a case of two cysts derived from the same
thyroglossal duct, one in the hyoid region and the other in the
tongue base. To our knowledge, this coexistence has not been
described previously in the literature.
To our knowledge this is a unique case of supra and infera hyoid
bone thyroglossal cysts.
INFRA HYOID CYST
INFRA AND SUPRA HYOID CYSTS
HYOID BONE SEPERATING THE TWO CYSTS
EXCISION OF THE TWO CYSTS AND THE CENTRAL PART OF THE
HYOID BONE
COMPLESION OF THE OPERATION