The protrusion of the orbital fat, aggravated by local dyschromia, causes an unpleasant aesthetic appearance, which worsens with age. This study describes 15 cases of treating the tear trough with hyaluronic acid filling. The substance was deeply injected through retro injection. Eleven patients (73%) were satisfied with the procedure. Two cases (13%) presented edema in the treated area, one case (6%) developed hyperchromia of the lower eyelids, and another (6%) developed an irregularity on the cutaneous surface in the area that was filled, and was treated with hyaluronidase. This technique demonstrated good results, with no serious complications.

Keywords: HYALURONIC ACID, REJUVENATION, ORBIT, SKIN

Palisaded encapsulated neuromas are solitary neural skin tumors characterized by the presence of compact and parallel bundles of Schwann cell fascicles. The present article reports a case of this type of tumor, which was confirmed by anatomic pathological examination of a 55-year-old female patient who reported hypochromic macula growth, which had evolved into a smooth domed superficial papule with telangiectasias, simulating a basal cell carcinoma. Having knowledge of this entity is crucial in order to carry out differential diagnoses-comparing it to other lesions-especially basal cell carcinomas, skin appendage tumors, nevi, and epidermal cysts.

Keywords: NEUROMA, SKIN NEOPLASMS, SCHWANN CELLS

Introduction: Melasma appears as a hyperpigmentation, which mainly affects body areas exposed to the sun, and is considered a common condition. Objective:To evaluate the efficacy of 82% lactic acid peeling in the treatment of facial melasma through a prospective and comparative study. Methods: Three fortnightly application sessions with 82% lactic acid peeling were carried out in 16 patients with facial melasma - eight of them were using the standard triple combination drugs for the treatment of hyperpigmentation while the others were untreated for 60 days. The Wilcoxon signed-rank test was applied in order to compare the two groups' values for the Melasma Area Severity Index. Results: The lactic acid peeling improved the hyperpigmentation in all patients studied, with no permanent side effects, proving to be an effective treatment. The Wilcoxon signed-rank test showed a significant reduction (p = 0.0003) in the Melasma Area Severity Index, in all patients. Conclusion: The 82% lactic acid peeling treatment can be an important tool in the improvement of resistant melasma.

Keywords: CHEMEXFOLIATION; THERAPEUTICS; SKIN; LACTIC ACID; HYPERPIGMENTATION.