Intrathyroidal Lymphoepithelial Cyst. A Report of Two Cases Not Associated with Hashimoto's Thyroiditis

Ryška, Aleš; Vokůrka, J; Ludvíková, Marie

doi:10.1016/s0344-0338(97)80056-8

Cited by 26 publications

(23 citation statements)

References 17 publications

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“…The composition of lesions matched very well with those described by Leblanc et al (1990) and CameselleTeijeiro et al (1994a). Cystic lesions were found identical with findings of Watanabe et al (1995) and Ryka et al (1997).…”

Section: Discussionsupporting

confidence: 74%

“…Cameselle-Teijeiro et al (1994b) as well as Michal et al (1996) also emphasised the enormous developmental potential of such cellular lines and related it to histogenesis of thyroid tumours. Recently, Watanabe et al (1995) and Ryka et al (1997) described intrathyroidal lymphoepithelial cysts in detail, which they derived from UBBs. Leblanc et al (1990) analysed the SCN occurrence in dogs.…”

Section: Introductionmentioning

confidence: 99%

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The expression of sialylated molecules in parafollicular-cell hyperplasia of the canine thyroid gland

Vajner¹,

Vortel²,

Brejcha³

2001

Vet. Med. - Czech

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During the 18-year period (19741991), the lymphocytic thyroiditis with the finding of serum autoantibodies against thyroglobulin was diagnosed in 180 Beagle dogs (92 males and 88 females). In 107 of them (56 males and 51 females), hyperplasia of parafollicular cells was concurrently encountered. In further 11 cases (3 males and 8 females), solid cellular structures were found in the thyroid parenchyma, in 4 females combined with unilocular or multilocular lymphoepithelial cysts. Grimelius stain revealed the presence of parafollicular cells even at the periphery of cellular nests. Using the lectin histochemistry with Maackia amurensis agglutinin (MAA), Sambucus nigra agglutinin (SNA) and Tritrichomonas mobilensis lectin (TML), the presence of sialylated molecules was demonstrated in the cell membranes and perinuclear cytoplasmic regions of parafollicular cells that formed hyperplastic nodules or were interspersed in solid cell nests.

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Section: Discussionsupporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

The expression of sialylated molecules in parafollicular-cell hyperplasia of the canine thyroid gland

Vajner¹,

Vortel²,

Brejcha³

2001

Vet. Med. - Czech

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“…We have also found multiple nests exhibiting squamous features, which are partially explained by squamous metaplasia as one feature of amyloid goiter, but their frequent identification especially near the lymphoepithelial cyst may refer to solid cell nests, especially with the strong immunoreactivity to CEA. Intrathyroid lymphoepithelial cysts may be seen by some authors as a type of cystic degeneration of solid cell nests (ultimobranchial body remnants), depending on their proximity and similar immunohistochemical profile [23,24]. The admixture of intrathyroid parathyroid tissue, lymphoepithelial cyst, and solid cell nests supports the theory of their origin from a branchial derivation [24].…”

Section: Discussionmentioning

confidence: 96%

A Case of Amyloid Goiter Associated with Intrathyroid Parathyroid and Lymphoepithelial Cyst

Abdou

Kandil

2009

Endocr Pathol

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Diffuse enlargement of the thyroid gland accompanied by an interstitial tissue deposition of amyloid is a special entity termed an amyloid goiter. An amyloid goiter is a rare thyroid lesion, which has been described a long time ago. In this report, we add a new classic case of amyloid goiter that differs from other reported cases in its association with intrathyroid parathyroid and lymphoepthelial cyst involved with amyloidosis. The presence of parathyroid tissue inside the thyroid parenchyma and surrounded by amyloid material elicited a diagnostic problem due to suspected medullary carcinoma. Careful histological examination and immunohistochemical staining for parathormone and calcitonin have largely helped in the differential diagnosis. Bilaterality, diffuse, and homogeneous involvement of the thyroid gland, with absence of definite masses, all direct the diagnosis toward amyloid goiter.

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“…6 Only a few reports on the sonographic findings of intrathyroidal lymphoepithelial cyst have been published. 3,4,[7][8][9][10][11] Many describe cystic lesions with or without an internal solid mass on sonographic examination. [7][8][10][11] In 2 cases, the intrathyroidal lymphoepithelial cyst appeared as a heterogenous echoic mass, which showed yellowish pus-like material and creamy green fluid on aspiration, suggesting a cystic mass.…”

Section: Discussionmentioning

confidence: 99%

Lymphoepithelial cyst of the thyroid mimicking malignancy on sonography

Kwak

Kim

Jung

et al. 2006

J. Clin. Ultrasound

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A 52-year-old man presented with a palpable left neck mass that had been present for several months. A sonogram showed a 2-cm hypoechoic mass with internal coarse macrocalcifications in the left lobe of the thyroid gland. CT revealed a well-demarcated hypodense mass within the left thyroid lobe. A left thyroidectomy was performed at the patient's request because of the possibility of malignancy based on sonographic findings. Pathologically, the mass was composed of pseudostratified ciliated columnar epithelial cells simulating respiratory epithelium surrounded by florid lymphoid hyperplasia with germinal centers, consistent with an intrathyroidal lymphoepithelial cyst.

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Intrathyroidal Lymphoepithelial Cyst. A Report of Two Cases Not Associated with Hashimoto's Thyroiditis

Cited by 26 publications

References 17 publications

The expression of sialylated molecules in parafollicular-cell hyperplasia of the canine thyroid gland

The expression of sialylated molecules in parafollicular-cell hyperplasia of the canine thyroid gland

A Case of Amyloid Goiter Associated with Intrathyroid Parathyroid and Lymphoepithelial Cyst

Lymphoepithelial cyst of the thyroid mimicking malignancy on sonography

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