Journal List > Int J Thyroidol > v.9(1) > 1082754

Park, Choi, Kim, and Kim: Thyroid Hemiagenesis Associated with Papillary Thyroid Carcinoma

Abstract

Thyroid hemiagenesis is a rare congenital anomaly that is caused by a developmental defect of a thyroid. Previous reports indicate that thyroid cancer associated with hemiagenesis is extremely rare. A 47-year-old woman presented with single nodule in the right thyroid gland that was incidentally detected during a routine medical checkup. Ultrasonography showed a 1.5×1.2 cm sized ill-defined irregular hypoehoic nodule in the right thyroid and the isthmus was present. However, the left thyroid was not seen and thyroid was disconnected at left paraisthmic area. Fine-needle aspiration cytology confirmed that the right thyroid nodule was papillary thyroid carcinoma. Total thyroidectomy with bilateral central compartment node dissection was performed. Permanent pathologic finding was 1.3×1 cm sized classical type papillary thyroid carcinoma with nodular hyperplasia. There was extensive lymphatic invasion and 3 metastatic lymph nodes out of 4 in central compartment. In conclusion, although thyroid hemiagenesis associated with thyroid carcinoma is extremely rare, treatment strategy is not different with patients with normal anatomy. And the possibility of developing a thyroid carcinoma should be considered in patients with hemiagenesis. Furthermore, it requires awareness of anatomical difference around the thyroid gland during operation.

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Fig. 1.
Ultrasonography of the thyroid gland showing one hypoechoic nodule (arrow) in the right thyroid (A) and no thyroid tissue in the left thyroid (B).
ijt-9-43f1.tif
Fig. 2.
Operative finding of specimen showing absence of left lobe.
ijt-9-43f2.tif
Table 1.
Thyroid hemiagenesis associated with thyroid cancer
Study Age Sex Site of thyroid hemiagenesis Thyroid tumor Isthmus
Hanburger et al.14) 14 F Left PTC+ FTC Absent
Harada et al.15) 74 F Right PTC Present
Greening et al.16) 51 F Left PTC Absent
Khatri et al.11) 41 F Right PTC Present
McHenry et al.10) 58 F Left FTC Present
Shaha et al.12) 30 F Right PTC Present
Park et al.17) 43 F Right PTC Unknown
Huang et al.8) 47 F Right PTC Present
Pizzini et al.4) 54 M Left PTC Present
Lee et al.3) 69 F Left PTC Unknown
Kim et al.9) 56 F Left FTC Present
Park et al.13) 29 F Right PTC Present
Nam et al.18) 53 F Right PTC Absent
Wang et al.5) 49 F Right MTC Absent
  60 F Left PTC Present
Karatag et al.19) 59 F Left PTC Unknown
Campenni et al.20) 36 M Left PTC Absent
Park (present report) 47 F Left PTC Present

FTC: follicular thyroid carcinoma, MTC: medullary thyroid carcinoma, PTC: papillary thyroid carcinoma

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