PubMed Health⌕ Search

Biomedical subjects

M Pignatti

Publications and source records attributed to M Pignatti.

7 recordsLinked to original sources
PubMed2001

Endoscopic forehead lift for ptosis of the brow caused by facial paralysis.

Twelve patients with ptosis of the brow caused by facial nerve paralysis were treated by endoscopic forehead lift. Four had an isolated paralysis of the temporal branch of the facial nerve and in eight the entire facial nerve was affected. In two of these patients the facial paralysis was bilateral, caused by Finnish hereditary amyloidosis. A standard subperiosteal endoforehead approach was used and the forehead was fixed by biodegradable pins (n = 8), anchor screws (n = 3), or a suture to the posterior scalp (n = 1). The procedure was a success in 10 patients, and failed in two after initially good results. The endoscopic brow lift is a good method of treating ptosis of the brow caused by paralysis of the temporal branch of the facial nerve.

Adult↗
PubMed1999

Treatment of Romberg's disease with parascapular free flap and polyethylene porous implants.

Romberg's disease is a rare condition characterized by progressive hemifacial atrophy. The atrophic process typically has its onset in the first or second decade of life, it continues for a few years (usually 2, but up to 10), and then it stops spontaneously. The subcutaneous tissue is the first to be involved by the disease, followed by muscles, bones, and, rarely, the skin. The etiology of the disease is unknown. The only available treatment is surgical. Several techniques have been reported in the literature, from fat transplant, to silicon prostheses, to the use of flaps. We present our experience in successfully treating six patients (3 males and 3 females) affected by Romberg's hemifacial atrophy of intermediate or severe degree. A technique including a free parascapular microvascular flap with the adjunct of porous polyethylene implants was used. Further correction was performed with remodeling or resuspension.

Adipose Tissue↗
PubMed1997

Cross-sensitizations between azo dyes and para-amino compound. A study of 236 azo-dye-sensitive subjects.

Combined sensitizations to different azo dyes, probably based both on true cross-sensitization and on simultaneous positive reactions, have frequently been described. However, since azo dyes are included in the standard series in a minority of countries, the case studies considered comprise, with few exceptions, a small number of subjects. The aim of our study was to investigate cross-reactions between different azo dyes and para-amino compounds in azo-dye-sensitive subjects, to study the clinical aspects of azo dye dermatitis, to assess the relevance of sensitization to azo dyes, and to relate the pattern of cross-sensitizations to the chemical structure of the different dyes. Out of 6203 consecutively tested patients, 236 were sensitized to at least 1 of 6 azo compounds employed as textile dyes, included in our standard series. 107 subjects reacted to Disperse Orange 3 (DO3), 104 to Disperse Blue 124 (DB124), 76 to p-aminoazobenzene (PAB), 67 to Disperse Red 1 (DR1), 42 to Disperse Yellow 3 (DY3), and 31 to p-dimethylaminoazobenzene (PDAAB). Co-sensitizations to para-phenylenediamine were present in most subjects sensitized to DO3 (66%) and PAAB (75%), in 27% and 36% of DR1 and DY3-sensitive subjects, and only in 16% of subjects sensitized to DB124. Apart from the hands and the face, the neck and the axillae were the most frequently involved skin sites. Whereas the involvement of flexural areas was mainly connected with sensitization to DB124, in patients with hand dermatitis and in those working as hairdressers, sensitization to DO3 and PAAB was more frequent. Moreover, in the former patient group, a history of textile dye allergy was most frequently obtained. Out of 33 patients tested with an additional textile dye series, only 5 subjects reacted to anthraquinone dyes. Cross-sensitizations between azo dyes and para-amino compounds can partially be explained on the basis of structural affinities.

Azo Compounds↗