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Biomedical subjects

G Lorette

Publications and source records attributed to G Lorette.

At least 109 records · Page 6Linked to original sources

[Melanoma in children: a case].

INTRODUCTION: Melanoma is rare in children. We report a new case. CASE REPORT: A black tumor on the medial aspect of the right thigh was removed at the age of 5 years. Histologic diagnosis was melanoma. One year later, a metastasic inguinal lymph node appeared in the right inguinal fold. Exeresis with curetage was performed followed with chemotherapy. Outcome has been favourable to date. DISCUSSION: The diagnosis of melanoma is difficult in children and is usually mistaken. In this case, the histologic diagnosis appears to have been exact and chemotherapy was performed. The rationale and modalities have been discussed.

Age Factors↗

[Blue rubber bleb naevus syndrome. Diagnosis and management apropos of 2 cases].

Blue Rubber Bleb Naevus Syndrome is a rare pathology: 70 cases have been noted since the first description, by Gascoyen, in 1860. It is an acquired disease which usually appears before the age of ten. It is marked by angiomatic cutaneo-digestive tumours combined with chronic anaemia and iron deficiency. Its many and various complications, particularly cataclysmic haemorrhages, car jeopardize the vital prognosis throughout. This little known syndrome is rarely diagnosed at the time of its first manifestations. We recall, from two cases and a review of their literature, the clinical characteristics of the syndrome, its complications and its essentially symptomatic treatment. We therefore suggest an approach to its diagnosis.

Child↗

[Langerhans-cell histiocytosis in an adult with initial vulvar involvement: 2 cases].

Langerhans' histiocytosis is a proliferation of atypical Langerhans cells which may affect several different organs. Two women had lesions of the vulva which led to the diagnosis. Vulvular involvement is the most frequent in gynaecological localization of Langerhans' histiocytosis. Pathological and immunohistochemical tests confirm the diagnosis.

Adult↗

[Physiological cutaneous signs in normal pregnancy: a study of 60 pregnant women].

We made a prospective study of 60 pregnant women from February 1992 to July 1992. Women with pathologic pregnancies were excluded. Fifty-one women had pigmentary changes; the most frequent was linea nigra in 45. Melasma was observed in 3 women only, and the other local melanosis were rare. Vascular changes appeared in 50 women and vascular spiders in 32. Only one vascular spider was seen on a leg; all the others were on the upper part of the body. Eighteen women had a palmar erythema. New striae distensae appeared in 37 women, the more often on the abdomen. Among the other non classified skin changes, acne appeared in 14 women, oedemas of the legs in 22, oedemas of the eyelids in 3 and molluscum fibrosum gravidarum in 4. We emphasize that skin changes are a frequent and polymorphous feature in pregnancy.

Adult↗

Specific pruritic diseases of pregnancy. A prospective study of 3192 pregnant women.

BACKGROUND AND DESIGN: For a period of 1 year, all pregnant women presenting with itching were investigated by clinical, histologic, immunopathologic, and laboratory studies. Fifty-one of 3192 pregnant women were studied. RESULTS: We identified (1) two typical cases of herpes gestationis, with an approximate incidence of one in 1700 pregnancies; (2) 22 cases of pruritus gravidarum, including five cases with a polymorphous skin eruption, with an incidence of one in 145 pregnancies; (3) 25 cases of polymorphic eruption of pregnancy, including diseases without maternal or fetal side effects and without criteria defining herpes gestationis or pruritus gravidarum, with an incidence of one in 130 pregnancies; and (4) two cases of intercurrent disease (one scabies and one exfoliative dermatitis). CONCLUSION: Our study is a prospective homogeneous account of pruritic dermatosis of pregnancy. Our results show that the incidence of herpes gestationis is higher than is usually reported in the literature and that pruritus gravidarum must be considered in the presence of itching occurring during pregnancy, with or without skin eruption.

Female↗

Cutaneous T cell lymphoma of signet ring cell type: a specific clinico-pathologic entity.

We describe a new case of signet ring cell peripheral T cell lymphoma in a 45-year-old man. This lymphoma had a very indolent course, since--without treatment--the clinical staging has shown no evidence of disease progression 11 years after initial symptoms. Immunophenotype indicated pan T antigens (Leu 4 CD3, Leu 1 CD5) and T suppressor cytotoxic antigen (IOT8 CD8) expression. Several T antigens (Leu 5b CD2, Leu 9 CD7, Leu 3a CD4) were not expressed. The proliferation index was less than 5% with Ki 67 monoclonal antibodies. The ultrastructural study showed characteristic cytoplasmic vacuoles containing microvesicles. Five cases of signet ring T cell lymphoma, which were very similar to our case, have been previously described. Their characteristics were primary cutaneous presentation, indolent course, good response to current therapies and a long survival period. The indolent course of these signet ring cell lymphomas may indicate that this type of lymphoma is a low grade malignant lymphoma and not only a morphological pattern.

Antibodies, Monoclonal↗

Effects of short-time hydration on skin extensibility.

Vertical cutaneous extensibility was studied before and after 1, 2, 5 and 10 min hydration by application of tap water. After hydration, we noted an increase in all rheological parameters linked to elasticity whereas viscosity and hysteresis parameters were unmodified. These modifications took place from the first minute and increased thereafter. Men and women showed identical values prior to hydration. After hydration, an extensibility gain was noted only in the women, men's extensibility being unmodified. Studying rheological behaviour as a function of age, we showed similar modifications in younger and older groups, the extensibility gain being greater in the older group. Prior to hydration, the stratum corneum was extremely rigid and extensibility was comparable between men and women. Hydration, softening the horny layer, allows a rapid extensibility gain proportional to the reduced thickness of the dermis, especially in women and older subjects.

Adult↗

Localized atypical pemphigoid on lymphoedema following radiotherapy.

Autoimmune bullous diseases have been reported associated with different causal factors: drugs, mechanical trauma and physical trauma, particularly ultraviolet light and radiotherapy. In these cases different hypotheses regarding the pathogenesis of blister formation can be supported. In this observation, we report a localized cicatricial pemphigoid with unusual clinical presentation. Moreover, it appeared 9 years after radiotherapy for breast carcinoma and it was preferentially localized on an upper limb lymphoedema. Because of the long time between the treatment of carcinoma with radiotherapy and the onset of pemphigoid, we assume that lymphoedema played a major etiological role in this particular cicatricial pemphigoid.

Aged↗

[Actinomyces meyeri cutaneous actinomycosis with pulmonary localization].

Infections due to Actinomycosis species are located in the cervico-facial region in 50 to 65 percent of the cases. Extra-cervical cutaneous lesions are exceptional. The most frequently encountered germ is Actinomyces israeli, observed in 85 percent of the cases. We report the case of an Actinomyces meyeri infection which presented as a leg abscess and a pulmonary lesion. There was no cervico-facial localization. There was however a chronic parodontitis. A second germ, Capnocytophaga sp. was isolated from the abscess. This case is of particular interest because of the extracervical localization and the rare species isolated (17 other cases of Actinomyces meyeri infection have been reported). The mechanism of the infection can be better understood in light of pulmonary lesions in the lower right lobe due to inhalation and the coexistence of a buccodental germ in the culture of the leg abscess: buccodental origin of the germ, pulmonary lesion secondary to inhalation, septicaemic dissemination with cutaneous metastases.

Actinomycosis↗

[Disseminated xanthosiderohistiocytosis with cardiac involvement and monoclonal gammapathy].

Xanthosiderohistiocytosis is a rare non-Langerhans histiocytosis (4 reported cases). The clinical characteristics include diffuse, sometimes deep, dark-brown infiltrations of the skin. Histological examination reveals abundant deposits of haemosiderin within the histiocyte proliferation. This entity is a clinical form of Montgomery's disease (xanthoma disseminatum) which has been reported in over 100 cases. Our case of disseminated xanthosiderohistiocytosis was particular because it involved the heart and was associated with a monoclonal gammapathy. Five cases have been reported associating xanthoma disseminatum and monoclonal gammapathy, including one case of xanthosiderohistiocytosis. In our case, rapidly increasing levels of monoclonal immunoglobulin suggested an evolution towards a myeloma. A monoclonal gammapathy should be looked for and monitored in cases of xanthosiderohistiocytosis, and more generally xanthoma disseminatum because of the risk of developing lymphoma or myeloma.

Aortic Valve Stenosis↗