[Porokeratosis. A study about 6 cases].
BACKGROUND
Porokeratoses (PK) represent a less common group of dermatoses that are acquired or hereditary, of unknown pathogenesis, characterized by keratinization disorder. Different clinical forms have been identified and the most frequent are the Mibelli's porokeratosis (MP) and the Disseminated Superficial Actinic Prokeratosis (DSAP).


OBJECTIVE
In this retrospective study, we analysed the observations of PK collected in the Dermatology Department of La Rabta Hospital over a 16-year period.


METHODS
Six cases of PK were collected: 4 females and 2 males, with no medical history with a mean-age of 42.7.


RESULTS
Only a female patient had (PK) familial history. All our patients had typical clinical aspects with lesions in annular plaques, of atrophic center, surrounded by keratotic border. The histological aspect was consistent with PK, showing the typical cornoid slide. In our series, there are 3 cases of (MP) and 3 cases of (DSAP). PK lesions usually appear during the childhood and the third and fourth decades for the DSAP. In MP, there is one or some large, unilateral, annular plaques. DSAP is characterized by numerous small annular lesions of the photo-exposed regions. Their prognosis is on the whole, favourable but remains conditioned by malignant transformation. Treatment is difficult aiming at reducing that risk of degeneration.
Trabelsi
Sabiha
S
Service de Dermatologie, hôpital La Rabta, Tunisie.
Badri
Talel
T
Mokni
Mourad
M
Ben Tekaya
Naoufel
N
Cherif
Faïka
F
Azaiz
Mohamed Iadh
MI
Ben Osman Dhahri
Amel
A
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D017499:Porokeratosis / Q000473:pathology; D012189:Retrospective Studies