Table 1.

Patient profiles

Case	Age/gender	Primary lesion	Present tumor lesion	Pretreatment	History of bilateral neck dissection
Case 001	54/male	Hypopharynx	Primary lesion	CT, RT	–
Case 002	48/female	Maxillary sinus	Primary lesion	CT, RT	–
Case 003	65/male	Hypopharynx	Cervical lymphnode	CT, RT, OP	–a
Case 004	57/male	Maxillary sinus	Lung	CT, RT, OP	–a
Case 005	60/male	Hypopharynx	Lung	CT, RT, OP	+
Case 006	71/male	Hypopharynx	Lung	CT, RT	–
Case 007	63/male	Maxillary sinus	Primary lesion	CT, RT	–
Case 008	61/male	Mesopharynx	Primary lesion	CT, RT, OP	–a
Case 009	54/male	Larynx	Skin	CT, RT, OP	+

CT chemotherapy, RT radiation therapy, OP operation

^aUnilateral neck dissection