最常见的的原发恶性肿瘤是鳞状细胞癌，其次是起源于唾液腺的腺样囊腺癌。
The most common primary malignant tumor is squamous cell carcinoma, with the second most common being adenoid cystic carcinoma arising from the salivary glands.
进一步的MRI检查显示符合后纵隔水囊状淋巴管瘤的囊状结构和不典型的神经管原肠囊肿及重复性囊肿。
Follow-up MRI demonstrated a cystic structure consistent with a posterior mediastinal cystic hygroma and was atypical for both a neurenteric cyst and a duplication cyst.
结果表明，克氏原螯虾触角腺可分为端囊、迷路和肾管三部分。
The result shows that there are three regions in the antennal gland:coelomosac, labyrinth and nephridial canal.
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