Sporadic progressive mucinous histiocytosis in a Mexican patient.

A 33 year-old woman presented with numerous 3- to 5-mm red-brown and yellow-brown dome-shaped nodules, primarily located on the scalp, dorsal aspects of the forearms, and lower extremities (Figure 1 and Figure 2). Her lesions started to appear 5 years prior to her consultation with increasing number and without spontaneous regression. Findings from a previous biopsy revealed epithelioid dermatofibroma. The remainder of the physical examination was unremarkable. There were no familial cases of this condition (both the mother and two older sisters were examined).

[Characteristics and risk factors for recurrence of cutaneous squamous cell carcinoma with conventional surgery and surgery with delayed intraoperative margin assessment]. / Características del carcinoma epidermoide cutáneo y riesgo para el desarrollo de recidivas con cirugía convencional y cirugía con transoperatorio tardío.

BACKGROUND: Non-melanoma skin cancer includes basal cell carcinoma and squamous cell carcinoma (SCC). Basal cell carcinoma is the most common and least aggressive but in a low percentage of cases, despite appropriate wide surgical margins, it can be aggressive, producing local invasion, recurrences and distance metastasis. SCC has a more aggressive behaviour invading first the skin, the lymph nodes and less frequently produces distance metastasis OBJECTIVE: To identify the characteristics of recurrent SCC and frequency of new SCC after conventional surgical and primary closure or closure delayed until a histological reporting of tumour-free surgical margins, in order to achieve a better surgical option, in our Mexican population. MATERIALS AND METHOD: We reviewed clinical records from the last 10 years, and included those with a diagnosis of SCC. RESULTS: One hundred and fourteen tumours in 103 patients were included. The mean new tumour diagnosis was 32.2 per year; there were 46.6% men and 53.4% women. Age range 19-91, with mean 71.94 years (SD=13.34). The evolution time was from 1-112 months (mean=12 months, SD=2.65). The most affected site was the cheek. In addition, an invasive tumour was reported in 54% in the histopathological study. At 10-year follow-up we found a second SCC in 14 patients and only 4 recurrences, between the 1st and 4th year and 3were treated with delayed closure until margins were tumour-free. CONCLUSION: In this study we demonstrated that delayed closure technique is easy and adaptable in our population in the treatment of SCC, achieving good results with very low recurrences at 10- year follow -up.

Neonatal vesiculopustular eruption associated with transient myeloproliferative disorder: report of four cases.

BACKGROUND: Transient myeloproliferative disorder (TMD) affects up to 10% of patients with Down syndrome (DS). A small proportion of newborns are asymptomatic and only manifest circulating blast cells, with or without leukocytosis, while others present with hepatomegaly, splenomegaly, serous effusions, and liver fibrosis. Few cases in the literature also have skin manifestations, described as crusted, erythematous, vesiculopustular eruptions occurring mainly on the face, with spreading to the trunk and extremities. MATERIALS AND METHODS: Four patients with DS and TMD were studied due to the presence of cutaneous eruptions. Systemic involvement, work-up, and follow-up were documented for each patient. Our results were compared with the previously reported cases. RESULTS: All patients were males, with ages ranging from 1 to 20 days at the time of diagnosis. In three patients, the eruption was papulopustular, and two of them also had vesicles. In one patient, lesions resembled bullous impetigo. In all, the lesions involved the face, followed by the extremities in three and the trunk in two patients. Pathergy phenomena was present in one patient. Hepatomegaly and a leukemoid reaction were present in all patients. Bone marrow showed an M7 immunophenotype in three patients and normal cellularity in one. Follow-up ranged from 2 to 11 months, during which the patients were healthy. CONCLUSIONS: Recognition of the cutaneous eruptions associated with TMD in neonate patients with DS may lead to early diagnosis and avoidance of unnecessary chemotherapy. However, because leukemia may develop later, careful follow-up is mandatory in all cases.