Congenital Foregut Duplication Cysts of the Anterior Tongue

Abstract

Foregut duplication cysts rarely present in the anterior tongue and are easily misdiagnosed preoperatively. An MRI study is helpful in preoperative planning, although all lesions were radiologically indistinguishable from dermoid cysts. These masses may be an underappreciated entity in the differential diagnosis of congenital anterior tongue masses.

Colonic-Type Adenocarcinoma of the Base of the Tongue: A Case Report of a Rare Neoplasm

“…Of relevance is a recent case description of an adenocarcinoma arising in a lingual foregut duplication cyst of the floor of the mouth in a 61-year-old man [19]. The findings of this case report strongly suggest that such cysts, classified as choristomas partially composed of gastrointestinal epithelia, [20] could represent the anatomic foundation for the tumor described herein, rather than a salivary gland origin. Thus, recognition of the potential malignant transformation of lingual choristomas along with a thorough clinical and immunohistochemical workup of such tumors is pivotal to resolve the differential diagnosis of challenging cases such as this one.…”

Intralingual Cystic Mass in an Adolescent with History of Hydatidosis: Case Report

“…Four main theories have tried to explain pathogenesis of LFDCs. 7 But none of them can explain incorporation of the heterotopic enteric tissue into the tongue. It was postulated that since foregut and pharyngeal arches are closely apposed LFDCs may arise from abnormal cellular migration.…”

Lingual Foregut Duplication in a Middle-Aged Adult: Fig 1.

“…Complete excision of the cyst is the treatment of choice for foregut duplications, with no recurrences reported. 8 MR imaging is the technique of choice for oral cavity lesions, providing excellent contrast resolution of soft tissues with multiple pulse sequences, but enhanced CT may also be useful in the absence of dental amalgam. Lingual duplications typically appear as nonenhancing or thinly rim-enhancing cystic lesions.…”

“…On T2-weighted images, they appear uniformly hyperintense. 8 CT typically reveals a well-defined homogeneous cystic mass, but loculation is possible. 9 Prenatally, sonography can also be of diagnostic use, followed by MR imaging for confirmation.…”

“…The presence of proteinaceous fluid in duplication cysts produces similar signal intensities on T1 and T2 sequences, so these lesions may be difficult to distinguish. 8 Mucocele of the tongue demonstrates the typical findings of a cystic lesion, with low signal intensity on T1 and high signal intensity on T2. 10 Venolymphatic malformations display similar signal intensities on T1 and T2 sequences, with a heterogeneous and often infiltrative appearance.…”