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Capsular pseudoinvasion after fine‐needle aspiration of follicular adenomas of the thyroid
Author(s) -
VercelliRetta Jorge,
Almeida Edgardo,
Ardao Gonzalo,
Paseyro Ana M.,
Pedreira Graciela,
Morelli Raúl,
Balboa Oscar
Publication year - 1997
Publication title -
diagnostic cytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.417
H-Index - 65
eISSN - 1097-0339
pISSN - 8755-1039
DOI - 10.1002/(sici)1097-0339(199710)17:4<295::aid-dc11>3.0.co;2-j
Subject(s) - medicine , parenchyma , thyroid , follicular phase , fine needle aspiration , adenoma , pathology , differential diagnosis , follicular carcinoma , complication , thyroid cancer , follicular thyroid cancer , capsule , thyroid carcinoma , radiology , surgery , papillary carcinoma , biopsy , papillary thyroid cancer , botany , biology
Two cases of an unusual finding of capsular pseudoinvasion in follicular thyroid adenomas after fine‐needle aspiration (FNA) procedures are reported. These capsular breaches were noted along the hemorrhagic needle track, which traversed the normal peripheral thyroid parenchyma into the lesions. A reparative reaction was seen at some points along one of the tracks. Histologic examination also showed extrusion of the tumor parenchyma through the capsular interruption in one case. Surgical pathologists should be aware of this rare complication of FNA of thyroid follicular adenomas as a differential diagnosis of minimally invasive (encapsulated) follicular carcinoma. Diagn. Cytopathol. 1997;17:295–297. © 1997 Wiley‐Liss, Inc.