Hematodermic neoplasm (HN) is a clinically aggressive neoplasm with a high incidence of cutaneous involvement and a risk of leukemic dissemination. In the recent WHO-EORTC classification, the term blastic natural killer cell lymphoma has been replaced with CD4+/CD56+ HN because of its derivation from a plasmacytoid dendritic cell precursor. Cases of HN that completely lack CD4 or CD56 expressio...

The malignant melanoma is a neoplasm associated with a wide variety of cutaneous paraneoplastic syndromes, as dermatomyositis, systemic sclerosis, paraneoplastic pemphigus. We describe a case of four multiple trichilemmal cystis arising on frontal region in the same patient with brain metastasis and unknown primary melanoma and discuss their relationship.

Microcystic adnexal carcinoma is an uncommon type of cutaneous neoplasm known by its slow growth but local aggressivity and no potential systemic metastasis. The standard diagnostic approach histopathological study a deep incisional or excisional biopsy. literature has detailed variety treatment modalities, including the Mohs micrographic surgery, excision, radiation therapy, chemotherapy, obse...

Malignant glomus tumor, or glomangiosarcoma, is a very rare mesenchymal neoplasm that, when seen, occurs in visceral organs. Despite having histologic features of malignancy, these tumors usually do not metastasize. However, when metastasis occurs, this disease is often fatal. Our report presents the case of a 59-year-old female patient with a highly aggressive and widely metastatic glomus tumo...

Kimura disease is a chronic inflammatory disorder that is prevalent among Asians. It rarely affects the upper limbs or paediatric patients. We report a case of Kimura disease with first presentation as a soft tissue mass in the arm mimicking a soft tissue neoplasm with metastasis in a 12 year old Chinese boy.

Intraosseous adenoid cystic carcinoma is an extremely rare neoplasm with only 17 cases reported previously. A case of primary intraosseous adenoid cystic carcinoma of the mandible with lung metastasis in a 45-year-old man is reported, together with a brief review of the literature.

Urachal adenocarcinoma is a rare neoplasm of the bladder. Most of these tumors arise from urachal remnants in the dome of the bladder and extend into the umbilicus. These tumors can recur and most commonly metastasize to lymph nodes, retroperitoneum, lungs, liver and bone. Here we report a case of an urachal adenocarcinoma followed for seven years with lung metastasis for three years.