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Laparoscopic resection of retroperitoneal ectopic thyroid tissue
Author(s) -
Tamaki Sawako,
Miyakura Yasuyuki,
Someya Soutoku,
Ishikawa Hideki,
Kakizawa Nao,
Hasegawa Fumi,
Tanaka Hiroyuki,
Kikugawa Rina,
Tsujinaka Shingo,
Tanaka Akira,
Lefor Alan Kawarai,
Rikiyama Toshiki
Publication year - 2017
Publication title -
asian journal of endoscopic surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.372
H-Index - 18
eISSN - 1758-5910
pISSN - 1758-5902
DOI - 10.1111/ases.12367
Subject(s) - medicine , ectopic thyroid , radiology , inferior mesenteric artery , histopathological examination , thyroid , superior mesenteric artery , laparoscopy , nuclear medicine , pathology
A 43‐year‐old otherwise healthy woman was found to have a retroperitoneal mass during a routine medical examination and was referred for further evaluation. Abdominal CT scan showed a well‐delineated, low‐density area that exhibited heterogeneous contrast enhancement. The area measured about 20 mm in size and was to the left of the aorta at the level of the inferior mesenteric artery. MRI showed a mass with heterogeneous hypointensity on T 1 ‐weighted images and heterogeneous hyperintensity on T 2 ‐weighted images. PET‐CT scan showed slightly increased 18 F‐fluorodeoxyglucose accumulation within the mass. Laparoscopic resection was performed. A smooth, brownish mass was seen in the retroperitoneum and was resected with minimal blood loss. Histopathological examination showed a nodular mass measuring 40 × 26 × 20 mm that was composed solely of ectopic thyroid tissue. This case shows the exceptional development of ectopic thyroid in the infradiaphragmatic retroperitoneum and demonstrates the usefulness of laparoscopy for resecting such masses.