Table 3.
Anatomical classification of RSG.
| Type | Location | Anatomy | Present study [n (%)] |
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| I | Anterior mediastinum | Anterior to great vessels, trachea and RLN | 22 (73.3%) |
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| II | Posterior mediastinum | Posterior to great vessels, trachea and RLN | - |
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| IIA | Ipsilateral extension | 6 (20.0%) | |
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| IIB | Contralateral extension | - | |
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| II B1 | Extension posterior to both trachea and esophagus | 1 (3.3%) | |
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| II B2 | Extension between trachea and esophagus | - | |
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| III | Isolated mediastinal goiter | No connection to orthotopic gland; may have mediastinal blood supply | 1 (3.3%) |
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