Schwannoma Arising in a Lymph Node Mimicking Metastatic Pulmonary Carcinoma

Mitsuhiro Kamiyoshihara, Hitosi Igai, Fumi Ohsawa, Ryohei Yoshikawa, Munenori Ide and Masanori Iwashina

Department of General Thoracic Surgery, Maebashi Red Cross Hospital, Japan
Department of Pathology, Maebashi Red Cross Hospital, Japan

^*Correspondance to: Mitsuhiro Kamiyoshihara 

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Abstract:

Schwannomas commonly arise in the torso, extremities, and mediastinum. However, no interlobar lymph node (#11i) lesions have ever been reported. This is a thought-provoking case, because it involved a schwannoma arising in a lymph node mimicking metastatic pulmonary carcinoma. A 72-year-old man was diagnosed with primary pulmonary carcinoma, and 18F-Fluoro Deoxy Glucose (FDG) positron emission tomography demonstrated high FDG uptake in the primary lesion and in #11i, which suggested metastasis (clinical stage IIA). A right lower lobectomy with lymph node dissection was performed. Fortunately, the enlarged #11i was a schwannoma and not metastasis. If a schwannoma involved a mediastinal lymph node, it could alter the diagnostic process and therapy.

Keywords:

Schwannoma; Lymph node metastasis; Lung cancer; Positron emission tomography

Cite the Article:

Kamiyoshihara M, Igai H, Ohsawa F, Yoshikawa R, Ide M, Iwashina M. Schwannoma Arising in a Lymph Node Mimicking Metastatic Pulmonary Carcinoma. Clin Oncol. 2018; 3: 1456.