While erythema nodosum is a nodular, erythematous eruption predominantly affecting the extensor aspects of the legs, breast abscesses are the result of relatively common bacterial infections, and only 2 studies have r...While erythema nodosum is a nodular, erythematous eruption predominantly affecting the extensor aspects of the legs, breast abscesses are the result of relatively common bacterial infections, and only 2 studies have reported an association between erythema nodosum and breast abscesses. Here, we report the case of a patient with repeated erythema nodosum associated with subareolar abscesses. The patient was a 34-year-old woman with painful erythematous nodules on her right shin, accompanied by an indurated lesion on her right breast 4 days before the onset of the nodules. Therefore, the patient underwent circumareolar incision, and consequently the painful erythematous nodules disappeared. However, after 39 days, the patient developed another tender, painful lesion in her right breast and painful erythematous nodules on her right shin. After another circumareolar incision, the painful erythematous nodules disappeared again. Therefore, we suggested a significant association between erythema nodosum and breast abscess in this patient. The most common underlying causative organism in breast abscess is Staphylococcus aureus;however, erythema nodosum has rarely been proven to be associated with staphylococcal infections. Therefore, the relationship between S. aureus and erythema nodosum is rather controversial. However, the resistance to the usual treatment methods and prolonged clinical course in our case suggest that the pathogenesis of erythema nodosum associated with breast abscesses might be different from that of the common form of erythema nodosum.展开更多
Spindle cell hemangioma (SCH) is a rare benign vascular tumor and we report 2 cases of SCH who are 50-year-old man and 16-year-old girl. A growing amount of evidence indicates that multifunctional ECM molecule decorin...Spindle cell hemangioma (SCH) is a rare benign vascular tumor and we report 2 cases of SCH who are 50-year-old man and 16-year-old girl. A growing amount of evidence indicates that multifunctional ECM molecule decorin regulate endothelial cell-matrix interactions during angiogenesis. Furthermore, a current publication shows that no detectable decorin expression was found in the stromas of tumor nests in Kaposi’s sarcoma or angiosarcoma groups while the expression was clearly observed in the connective tissue stromas within benign vascular tumors. SCH exhibits spindle cell proliferation and resembles Kaposi’s sarcoma. Therefore, this study examined decorin expression in the tissues of our SCH cases by immunohistochemical analysis. The results demonstrated that immunoreactivity of decorin was clearly detectable in the connective tissue stroma within tumor nests. SCH was first perceived as sarcoma because of spindle cell proliferation, but this proliferation was subsequently found to be reactive. The presence of decorin expression in our cases also indicates that SCH have benign properties. Moreover, this study further increases the reliability of examination of decorin expression for differentiation between benign and malignant vascular tumors.展开更多
文摘While erythema nodosum is a nodular, erythematous eruption predominantly affecting the extensor aspects of the legs, breast abscesses are the result of relatively common bacterial infections, and only 2 studies have reported an association between erythema nodosum and breast abscesses. Here, we report the case of a patient with repeated erythema nodosum associated with subareolar abscesses. The patient was a 34-year-old woman with painful erythematous nodules on her right shin, accompanied by an indurated lesion on her right breast 4 days before the onset of the nodules. Therefore, the patient underwent circumareolar incision, and consequently the painful erythematous nodules disappeared. However, after 39 days, the patient developed another tender, painful lesion in her right breast and painful erythematous nodules on her right shin. After another circumareolar incision, the painful erythematous nodules disappeared again. Therefore, we suggested a significant association between erythema nodosum and breast abscess in this patient. The most common underlying causative organism in breast abscess is Staphylococcus aureus;however, erythema nodosum has rarely been proven to be associated with staphylococcal infections. Therefore, the relationship between S. aureus and erythema nodosum is rather controversial. However, the resistance to the usual treatment methods and prolonged clinical course in our case suggest that the pathogenesis of erythema nodosum associated with breast abscesses might be different from that of the common form of erythema nodosum.
文摘Spindle cell hemangioma (SCH) is a rare benign vascular tumor and we report 2 cases of SCH who are 50-year-old man and 16-year-old girl. A growing amount of evidence indicates that multifunctional ECM molecule decorin regulate endothelial cell-matrix interactions during angiogenesis. Furthermore, a current publication shows that no detectable decorin expression was found in the stromas of tumor nests in Kaposi’s sarcoma or angiosarcoma groups while the expression was clearly observed in the connective tissue stromas within benign vascular tumors. SCH exhibits spindle cell proliferation and resembles Kaposi’s sarcoma. Therefore, this study examined decorin expression in the tissues of our SCH cases by immunohistochemical analysis. The results demonstrated that immunoreactivity of decorin was clearly detectable in the connective tissue stroma within tumor nests. SCH was first perceived as sarcoma because of spindle cell proliferation, but this proliferation was subsequently found to be reactive. The presence of decorin expression in our cases also indicates that SCH have benign properties. Moreover, this study further increases the reliability of examination of decorin expression for differentiation between benign and malignant vascular tumors.
