First-bite syndrome in oncologic patients

Area of Science:

• Oncology
• Otolaryngology
• Pain Management

Background:

• First-bite syndrome (FBS) is a debilitating complication following parapharyngeal space surgery, characterized by sharp pain in the parotid or mandibular region at the onset of meals.
• Its pathogenesis involves selective sympathetic denervation of the parotid gland, with current treatments yielding poor outcomes.
• FBS is frequently misdiagnosed and significantly impacts patient quality of life.

Observation:

• Two patients undergoing major cervical oncologic surgeries (extended radical neck dissection and external carotid artery ligation) developed refractory FBS post-operatively.
• Conventional medical treatments for FBS were ineffective in these patients.
• Both patients experienced unexpected symptom improvement during external adjuvant radiotherapy, remaining asymptomatic for 7 and 10 months.

Findings:

• Radiotherapy demonstrated a significant positive effect on FBS symptoms in two oncologic patients.
• This observation challenges the conventional understanding of FBS treatment and suggests a potential new therapeutic avenue.
• The study highlights the need to consider radiotherapy in managing refractory FBS, particularly in the oncologic population.

Implications:

• Radiotherapy may represent a novel treatment modality for refractory first-bite syndrome, especially in patients with a history of head and neck cancer surgery.
• Further research is warranted to elucidate the pathophysiological mechanisms underlying radiotherapy's efficacy in FBS.
• This finding could lead to improved management strategies and enhanced quality of life for patients suffering from this often-misunderstood condition.