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Biomedical subjects

John L Ratz

Publications and source records attributed to John L Ratz.

7 recordsLinked to original sources
PubMed2004

Avulsion and partial matricectomy with the carbon dioxide laser for pincer nail deformity.

BACKGROUND: Pincer nail deformity is a common nail disorder that sometimes necessitates surgical intervention. A multitude of therapeutic modalities has been implemented to treat this condition. OBJECTIVE: To describe the use of the carbon dioxide laser in the successful treatment of pincer nail deformity. METHODS: This is a case report and literature review. RESULTS: A 63-year-old man was evaluated and treated with the carbon dioxide laser for a persistent pincer nail deformity. The patient tolerated the procedure well and had an acceptable surgical outcome. CONCLUSION: Pincer nail deformity may be successfully treated with the carbon dioxide laser, especially when a partial matricectomy is performed.

Humans↗
PubMed2004

Successful carbon dioxide laser therapy for refractory anogenital lichen sclerosus.

BACKGROUND: Lichen sclerosus is a chronic inflammatory dermatitis that often occurs in the anogenital area and presents a therapeutic challenge. Traditional medical management includes potent topical corticosteroids and is marked by variable results. OBJECTIVE: The objective was to describe the successful use of carbon dioxide laser ablation therapy in two women with refractory anogenital lichen sclerosus. METHODS: A case is reported and the literature is reviewed. RESULTS: Two women with medically recalcitrant anogenital lichen sclerosus were successfully treated with the carbon dioxide laser. Both patients tolerated the procedure well and had excellent surgical outcomes. CONCLUSION: Lichen sclerosus recalcitrant to medical therapy presents a therapeutic challenge This may be successfully treated with the carbon dioxide laser with excellent surgical results and minimal risk.

Anus Diseases↗
PubMed2003

Basosquamous carcinoma.

BACKGROUND: Basosquamous carcinoma (BSC) is a rare cutaneous tumor that has been poorly described in the dermatologic literature. It has been depicted as an aggressive tumor with a high incidence of distant metastasis. OBJECTIVE: To examine the average extent of local tissue invasion and presence of distant metastases in cases of BSC compared with those of basal cell carcinoma (BCC) and squamous cell carcinoma (SCC). METHODS: One thousand consecutive Mohs surgery cases performed between January 1993 and May 1995 at the Oschner Clinic in New Orleans, Louisiana, for histologically confirmed BCC, SCC, and BSC were reviewed. Each case was retrospectively evaluated for tumor type, anatomic location, number of Mohs stages performed, and presence of metastases at the time of surgery, as determined by chest radiograph. RESULTS: Seven hundred forty-five BCCs, 228 SCCs, and 27 BSCs (1,000 tumors total) were treated in 580 patients. The average number of stages required for clear margins in cases of BCC, SCC, and BSC was 1.62, 1.51, and 2.00, respectively. The prevalence of metastasis was 0.87% for SCC and 7.4% for BSC, which was statistically significant (P<0.001). CONCLUSION: In this retrospective study, BSCs displayed tissue invasion similar to that of BCC or SCC but had a higher frequency of pulmonary metastasis than SCC.

Carcinoma, Basosquamous↗
PubMed2002

Treatment of pearly penile papules with CO2 laser.

BACKGROUND: Pearly penile papules are angiofibromas found on the corona and sulcus of the glans penis. While these represent a benign condition, psychological and cosmetic concerns often prompt patients to seek therapeutic removal of these lesions. Multiple therapeutic modalities have been reported; however, use of CO2 laser has proven to be the most effective to date. OBJECTIVE: To demonstrate the efficacy of CO2 laser in treating pearly penile papules. METHODS: Case report. RESULTS: We report the successful treatment of pearly penile papules in an African American man with CO2 laser. CONCLUSION: The use of CO2 laser is an effective treatment for pearly penile papules. J. E. Lane, MD, C. M. Peterson, MD, and J. L. Ratz, MD have indicated no significant interest with commercial supporters.

Adult↗