Intralesional Cryotherapy With a Argon Gas Based Device for the Treatment of Keloid and Hypertrophic Scars

Amsterdam UMC, location VUmc

Status: Completed

Conditions: Cicatrix; Keloid; Hypertrophic

Treatments: Procedure: Intralesional cryotherapy

Study type: Interventional

Funder types: Other

Identifiers

NCT02063243

12/293

Details and patient eligibility

About

This prospective evaluation studies the effectiveness of Intralesional (IL) cryotherapy with a argon gas based device in treating keloids and hypertrophic scars in population consisting of all Fitzpatrick skin type patients

Full description

Intralesional (IL) cryotherapy is a novel treatment for keloids and hypertrophic scars, in which the scar is frozen from inside. Published results are promising, however only Caucasian patient populations have been studied. This prospective evaluation studies the effectiveness of IL cryotherapy in treating keloids and hypertrophic scars in a population consisting of all Fitzpatrick skin type patients.

Multiple devices are available, mostly based on a simple open system. Closed, argon gas based, systems are highly controlled and provide accurate freezing. However, this technique has never been used for IL cryotherapy for the treatment of keloid or hypertrophic scars. All patients with keloid or hypertrophic scars meeting inclusion criteria were treated with a argon based device called Seednet. Scar quality and possible recurrence are assessed pre- and postsurgery (3, 6 and 12 months) with objective devices determine scar color, scar elasticity, scar volume and patient's skin type. In addition, scars are evaluated using the Patient and Observer Scar Assessment Scale.

Enrollment: 33 patients

Sex: All

Ages: 10+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Keloids, defined as excessive scar tissue raised above skin level and proliferating beyond the confines of the original lesion
• Hypertrophic scars1 older than 12 months and insensitive to other treatments. Keloids were distinguished from hypertrophic scars based on the clinical judgment of experienced plastic surgeons and on the age of the scar (>1yr)
• A period between previous treatment and IL cryotherapy covered a minimum of 12 weeks
• Patients with all Fitzpatrick17 skin types
• Patients older than 10 years of age

Exclusion criteria

• pregnancy
• diabetes mellitus

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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33 participants in 1 patient group

keloid or hypertrophic scars

Other group

Description:

All patient including all skin types with keloid or hypertrophic disease receiving Intralesional Cryotherapy

Treatment:

Procedure: Intralesional cryotherapy