A 48-year-old woman presented with red papules on the thigh. Histopathological examination indicated pyogenic granuloma, and the patient was treated with total excision in 2003 and electrocauterization in 2005. Three months later, upon recurrence of the lesions, a diagnosis of composite haemangioendothelioma (CHE) was made. The patient was treated by total excision and lymph-node dissection, which revealed inguinal lymph-node metastasis. Despite the surgery, a further local recurrence occurred, subsequently treated by wide excision en bloc, with adjuvant radiotherapy and chemotherapy. Although CHE is defined as a vascular tumour with low-grade malignancy, the local recurrences and lymph-node metastases resulted in treatment difficulties in this case. Unlike earlier cases, the tumour in our patient presented as localized numerous small papulonodules, and lymph-node metastasis was detected within a relatively short time. Dermatologists and pathologists should be aware of this rare condition and include it in the differential diagnosis of vascular lesions.
Images in Clinical Dermatology 403 of calcifi cation have been described in JDM: a superfi cial pattern consisting of small, fi rm nodules and plaques in the skin, periarticular subcutaneous nodules (calcinosis circumscripta), deposition along the fascial planes in the muscles (calcinosis universalis) and a severe exoskeleton pattern of deposition in the subcutaneous tissue [6] .Cutaneous calcifi cation is frequently located on the elbows,
Amaç: Son y›llarda vitiligoda oksidatif stresin rolü konusunda çok say›da araflt›rma yap›lmaktad›r.Demir ve ferritin inflamasyon ve oksidatif reaksiyonlarda önemli rollere sahiptir, ancak bugüne dek vitiligolu hastalardaki demir
Abstract We present a case of pyoderma gangrenosum localized on the breast, without a preceding surgical intervention and associated systemic disorder. The ulcer had rapidly developed and covered a large portion of the breast. The patient responded well to systemic steroids and salicylazosulfapyridine and the ulcer completely healed with scarring after 3 months of treatment. Pyoderma gangrenosum rarely involves the breasts. A published work survey disclosed only 31 reported cases up to date. In most of these cases the lesions were related to previous surgical interventions, probably as the result of a pathergy phenomenon. The main differential diagnoses were skin and soft tissue infections including necrotizing fasciitis, and malignant neoplasms. Negative initial wound cultures and the relative sparing of nipple/areola complex helped to eliminate these disorders. Though an unusual site for pyoderma gangrenosum, lesions on the breast showed the characteristic clinical features of the disease. The types of associated disorders were also similar to those of the cases with classical pyoderma gangrenosum. As most of the lesions healed with significant scarring, early recognition and treatment of pyoderma gangrenosum located on the breast is important to prevent serious physical and psychological morbidity.
The pathogenesis of granuloma annulare (GA) is unclear. Collagen fiber degeneration is commonly reported, and there are several conflicting studies on elastic fiber and vascular changes associated with GA. In this study, we aimed to evaluate histopathologic characteristics, collagen and elastic tissue changes and vascular changes in GA.Clinical records of 35 GA patients were examined alongside serial sections of 38 biopsy specimens from these patients. New sections of biopsy tissue were stained with hematoxylin and eosin, Verhoeff-van Gieson or Alcian blue and then evaluated.Four different histopathologic patterns were observed: interstitial (57.9%), palisadic granulomatous (26.3%), sarcoidal granulomatous (5.3%) and mixed (10.5%). Dermal mucin deposition was determined in 84.2% of specimens. Solar elastosis was observed in only seven specimens, and elastophagocytosis was observed in only two specimens. Collagen and elastic tissue damages were consistent findings in all biopsy specimens. Fibrin thrombi and vasculitic changes were not found in any of the specimens from this patient group.Elastic and collagen fiber damage are the main accompanying features of GA, which may develop from delayed-type hypersensitivity. Vasculitis does not appear to be a major causative process. Sun exposure also seems to have no major effect on the formation of GA but can be one of the stimulants or predisposing factors.
