Table I. Features of patients undergoing BoNT-A injection.

Case n.	Sex	Age(years)	Tumour site	Treatment	Previous treatment	Cause for treatment
1	M	60	Larynx	Total laryngectomy	–	Pharyngocut. fist.
2	M	57	Larynx	Total laryngectomy, neck dissection	–	Pharyngocut. fist.
3	M	59	Larynx	Pharyngolaryngectomy, neck dissection	–	Pharyngocut. fist.
4	M	69	Larynx	Total laryngectomy	–	Pharyngocut. fist.
5	M	64	Larynx	Total laryngectomy, neck dissection	–	Pharyngocut. fist.
6	M	66	Hypopharynx-larynx	Pharyngo-laryngectomy,neck dissection	Radiotherapy	Pharyngocut. fist.
7	F	62	Oropharynx	Median mandibulotomy,total glossectomy,microvascular reconstruction with rectus abdominis myocutaneous flap and neck dissection	–	Relative hypersalivation
8	F	60	Maxillar sinus cavity and oral cavity	Right subtotal maxillectomy, neck dissection and microvascular reconstruction	Percutaneous needle aspiration	Recurrent sialocele