A 63-year-old woman with long-standing AIDS and previous Kaposi sarcomas of the lower limb presented to our consultation complaining of a painful left ring finger with pulp enlargement. X-rays revealed an osteolytic lesion of the distal phalanx. We suspected an isolated osseous Kaposi sarcoma and at surgery we found a hemorrhagic lesion with bone extension into the phalanx. Bone involvement is ...

BACKGROUND The penis is an unusual site of presentation for Kaposi sarcoma, especially in immunocompetent patients. CASE PRESENTATION A 52-year-old human immunodeficiency virus (HIV)-seronegative man presented with a reddish, 8 mm in diameter nodule on the glans penis near the coronal sulcus. Histopathology after excision of the lesion was consistent with Kaposi sarcoma. No other cutaneous or...

Canine histiocytic diseases are an emerging spectrum of diseases characterized by proliferations of histiocytic cells. Nonneoplastic histiocytic disease (reactive histiocytosis, comprising cutaneous and systemic histiocytosis) is uncommon. Neoplastic histiocytic diseases include cutaneous histiocytoma, which is a benign histiocytic tumor, and localized and disseminated histiocytic sarcoma (prev...

Malignant mesenchymoma is combined soft tissue tumors of mesenchymal origin. Cutaneous combined sarcomas are exceedingly rare. We report the case of an 81-year-old woman who presented a left cutaneous mass. She underwent a wide local excision. Histopathological and immunohistochemical studies were consistent with the diagnosis of combined pleomorphic liposarcoma and conventional osteosarcoma (m...

BA: bacillary angiomatosis CEAN: cutaneous epithelioid angiomatous nodule EH: epithelioid hemangioma KS: Kaposi sarcoma PyG: pyogenic granuloma INTRODUCTION Cutaneous epithelioid angiomatous nodule (CEAN) is a recently described rare vascular proliferation. Although this neoplasm is more commonly reported as a solitary papule or nodule on the trunk or extremities, eruptive patterns have been re...

Histiocytic sarcoma is a rare hematologic malignant neoplasia originating from histiocytic or dendritic cell clones. The lesions may be in nodal or extranodal sites, most commonly in the gastrointestinal tract. A small number of cases presents as unique cutaneous lesions. The definitive diagnosis is made by positivity for the immunohistochemical markers CD163, CD68, CD4 and lysozyme. The treatm...

Myofibroblastic sarcoma can be classified as low-, intermediate-, and high-grade. Low-grade myofibroblastic (LGMS) is uncommon rarely appears on the skin. LGMS diagnosed based histopathological immunohistochemical findings. Additionally, metastases are rare well. Herein, authors describe a case of cutaneous in neck. To best our knowledge, there no cases regarding neck present existing literatur...

KAPosI multiple idiopathic haemorrhagic sarcoma is a peculiar condition which cannot be accurately classified (Reese, 1963). It was regarded by Kaposi (1872) as a cutaneous sarcoma affecting the blood vessels; by Ewing (1922) as an infectious granuloma; by Pautrier and Diss (1928) as originating from nerve tissue; and by D6rffel (1932) as arising from the reticulo-endothelial system, the lesion...