title: Metastasis to the lingual lymph node in patients with squamous cell carcinoma of the floor of the mouth: a report of two cases.
abstract: Cancer of the tongue or the floor of the mouth sometimes metastasizes to the lingual lymph node. We present two patients with squamous cell carcinoma of the floor of the mouth who developed metastases to the lateral lingual lymph nodes. Case 1, a 62-year old male, had squamous cell carcinoma of the floor of the mouth (T3N2cM0). He underwent tumor resection and bilateral neck dissection, and histological examination revealed five metastatic nodes including the lateral lingual node near the hyoid bone. No recurrent tumors were evident, but he died of pneumonia 10 months after the surgery. Case 2, a 62-year old male, had squamous cell carcinoma of the floor of the mouth (T2N2cM0). He underwent tumor resection and bilateral neck dissection, and histological examination revealed three metastatic nodes including the lateral lingual node near the sublingual gland. No recurrence was found in the oral and neck regions, but he died of liver metastasis 18 months after the surgery. Metastasis to the lingual lymph node may cause a recurrence of oral cancer in the neck, since conventional neck dissection cannot remove this node even in the case of en bloc resection of the primary tumor and the neck. When CT, MRI, or intra-operative palpation findings lead to a suspicion of metastasis to the lingual lymph node, the area of neck dissection should be extended to include this node.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan. mumeda@med.kobe-u.ac.jp
authors.forename: Masahiro
authors.initials: M
authors.lastname: Umeda
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Minamikawa
authors.forename: Takashi
authors.initials: T
authors.lastname: Shigeta
authors.forename: Akiko
authors.initials: A
authors.lastname: Oguni
authors.forename: Tomoko
authors.initials: T
authors.lastname: Kataoka
authors.forename: Hidenori
authors.initials: H
authors.lastname: Takahashi
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Shibuya
authors.forename: Takahide
authors.initials: T
authors.lastname: Komori
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D017809:Fatal Outcome; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology; D008207:Lymphatic Metastasis / Q000473:pathology*; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D009362:Neoplasm Metastasis; D010173:Palpation; D014057:Tomography, X-Ray Computed