TABLE 1.

Each ICN Was Lesioned by HIFU, RFA, or EtOH

ICN	Neurolytic Technique	Pathology Results	Pathology Nerve Lesioned
Right ICN 1	HIFU	Muscle necrosis, nerve intact	No
Right ICN 2	HIFU	Muscle necrosis, nerve intact	No
Right ICN 3	HIFU	Muscle and nerve necrosis with hyperemia and stromal hyalinization	Yes
Right ICN 4	HIFU	Muscle and nerve necrosis with hyperemia	Yes
Left ICN 1	RFA	Muscle necrosis and nerve stromal hyalinization	Yes
Left ICN 2	RFA	Muscle necrosis without nerve damage	No
Left ICN 3	RFA	Muscle and nerve necrosis with hyperemia and stromal hyalinization	Yes
Left ICN 4	RFA	Muscle necrosis without nerve damage	No
Left ICN 5	EtOH	Muscle necrosis without nerve damage	No
Left ICN 6	EtOH	Muscle necrosis without nerve damage	No
Left ICN 7	EtOH	Muscle necrosis with no nerve present	No
Left ICN 8	EtOH	Muscle necrosis without nerve damage	No

The pathology results are described for each lesion. Note that the pig was euthanized 1 hour postprocedure. No significant difference (P = 0.41) was seen between each neurolytic technique, comparing nerve damage on a 3 × 2 contingency table.

ICN indicates intercostal nerve.