Circle hairs: a clinical curiosity.
A case of circle hairs is reported and the literature on the subject reviewed. Differential diagnoses are discussed as well as some theories on the nature of circle hairs.
Adult↗
Biomedical subjects
L Tamayo-Sanchez
Publications and source records attributed to L Tamayo-Sanchez.
The use of retinoids in the pediatric patient.
Oral retinoids are molecules derived from vitamin A that represent one of the most important steps forward in dermatologic therapeutics in the present century. The treatment of acne, severe psoriasis, and severe disorders of keratinization, prevalent diseases in children and adolescents, have radically changed since the advent of oral retinoids. Like most highly-effective medications, oral retinoids also have important untoward effects. Specialists, and in particular, dermatologists and pediatricians should be prepared to maneuver the delicate balance between therapeutic efficacy and side effects in order to give the pediatric patient the maximum benefit with the lowest possible risk.
Acne Vulgaris↗
Malignant cutaneous tumors in children. Twenty years of experience at a large pediatric hospital.
The frequency of different malignant cutaneous tumors (MCTs), primary and metastatic, in children is not known. We reviewed all MCTs, primary and metastatic, seen during a 20-year period in a large general pediatric hospital. Fifty-three MCTs, 36 primary and 17 metastatic, were diagnosed in 36,207 pediatric dermatology patients. The incidence was 1.4 per 1000 patients. The relative frequency of occurrence of the different tumors was as follows: rhabdomyosarcoma, 25%; lymphomas, 19%; basal cell carcinoma, 13%; leukemia, 13%; neuroblastoma, 10%; malignant melanoma, 6%; squamous cell carcinoma, 6%; unclassified sarcomas, 4%; epithelioid schwannoma, 2%; ependymoma, 2%. The mean follow-up was 3 years; 48% died, 27% were lost to follow-up, and 25% are under control. We conclude that primary and metastatic MCTs in children are rare. Their types differ from MCTs in an older age population. MCTs in children are associated with a high mortality rate, often related to late recognition.
Basal Cell Carcinoma↗
Dermoid cyst connected with the lacrimal canaliculum.
An infant had a 3 x 1.5-cm congenital, slow-growing, lobulated tumor below the right inferior eyelid. The mass transilluminated, and needle aspiration yielded tears. Dacryocystography showed a large cystic area connected with the lower lacrimal canaliculum. Histologically, the tumor proved to be a dermoid cyst. This association has not been reported previously. Surgical excision and suture of the pedicule resulted in permanent cure.
Dermoid Cyst↗
Unusual leukoderma after erythema multiforme: a case report.
Erythema multiforme is an inflammatory disorder of the skin that usually fades without sequelae. It is well known that after inflammatory events, hyper- or hypochromic spots can remain, especially in skin types III-VI, but achromia is very rare. We report a case of residual leukoderma after erythema multiforme.
Child↗
Keratitis, ichthyosis, and deafness (KID syndrome): review of the literature and proposal of a new terminology.
The so-called KID (keratitis, ichthyosis, deafness) syndrome is a congenital disorder of ectoderm that affects not only the epidermis, but also other ectodermal tissues such as the corneal epithelium and the inner ear. Sixty-one patients who fulfill the criteria for this syndrome were identified in a review of the literature through December 1993. All had cutaneous and auditory abnormalities, and 95% also had ophthalmologic defects. The most frequent clinical features were neurosensory deafness 90%, erythrokeratoderma 89%, vascularizing keratitis 79%, alopecia 79%, and reticulated hyperkeratosis of the palms and soles 41%. All of these findings constitute the major criteria for the diagnosis. The KID acronym does not accurately define this entity since the disorder is not an ichthyosis, because scaling is not the main cutaneous feature and not all patients have keratitis early in the course. We suggest that this syndrome should be included under the general heading of congenital ectodermal defects as a keratodermatous ectodermal dysplasia (KED).
Adult↗
Acute annular urticaria in infants and children.
Characteristic features of acute annular urticaria in 34 infants and small children were large, erythematous annular and polycyclic lesions with violaceous centers, eyelid, hand, and foot edema, absence of angioedema of the airway, absence of pruritus, spontaneous resolution in 8 to 10 days, and frequent history of furazolidone medication for diarrhea. Nondermatologists often misdiagnose acute annular urticaria as erythema multiforme and unnecessarily overtreat patients. The differential diagnosis with other conditions presenting with annular lesions in children is discussed.
Acute Disease↗