Transoral laser microsurgery for the unknown primary: role for lingual tonsillectomy

Area of Science:

• Otolaryngology
• Head and Neck Surgery
• Oncology

Background:

• Unknown primary head and neck cancer presents a diagnostic challenge.
• Transoral laser microsurgery (TLM) is a minimally invasive technique for head and neck procedures.
• Identifying the primary tumor site is crucial for effective treatment planning.

Purpose of the Study:

• To evaluate the efficacy of a TLM-assisted surgical algorithm in detecting occult primary tumors in the head and neck.
• To determine the diagnostic yield of specific TLM-assisted techniques, including lingual tonsillectomy.

Main Methods:

• A retrospective review of 52 patients with unknown primary squamous cell carcinoma (SCC) of the head and neck.
• Patients were treated using a standardized surgical algorithm incorporating TLM-assisted techniques.
• Analysis of tumor identification rates based on the surgical approach, with a focus on lingual tonsillectomy.

Main Results:

• The overall rate of primary tumor identification was 75% (39/52 patients).
• Utilizing a TLM algorithm with lingual tonsillectomy increased the detection rate to 86% (31/36 patients).
• Occult tumors were most frequently located in the lingual tonsils (65%) and palatine tonsils (27.5%).

Conclusions:

• A surgical algorithm incorporating TLM-assisted techniques, particularly lingual tonsillectomy, maximizes the detection of occult primary head and neck tumors.
• TLM-assisted approaches offer a high diagnostic yield for identifying the primary site in cases of unknown primary head and neck cancer.