[Epidermal inclusion cyst mimicking an implantable cardiac defibrillator pocket infection: a rare finding].

We report an unusual case of an elderly man presenting with formation and rupture of an epidermal inclusion cyst at the level of an implantable cardiac defibrillator (ICD) pocket. The lesion appeared 2 years after ICD implantation, mimicking a decubitus or a pocket infection. Surgical revision showed no signs of infection of the pocket, but the pedunculated lesion was rooted in the subcutaneous tissue, whit an implant base external to the ICD pocket, which was removed and analyzed histologically, confirming the diagnosis of epidermal inclusion cyst.

An atypical pacemaker pocket hematoma containing chyliform fluid.

Subcutaneous hematoma is a complication of cardiac device implantation. In most cases, it is drained or spontaneously reabsorbed. While cases of chylothorax are rare, and cases of pseudochylothorax even rarer, previous cases of accumulation of chyliform material in the subcutaneous pockets of cardiac devices are anecdotal.

Takotsubo syndrome and pheochromocytoma: an insidious combination.

Pheochromocytoma is a rare adrenal tumor characterized by the secretion of catecholamines and vasoactive peptides. It can cause a catecholaminergic storm and lead to acute coronary syndromes. We present the case of a 53-year-old man, without any medical history, who arrived to the hospital following a spinal trauma due a fall.

CD4-positive diffuse large B cell lymphoma identified by flow cytometry: two case reports.

We report two cases of diffuse large B cell lymphoma (DLBCL), both occurring in the small bowel, which coexpress PAX5, weak or no CD20 and the CD4 antigen. The CD4 was initially identified by flow cytometry and then confirmed by immunohistochemistry. CD4 is a representative marker for helper T-lymphocytes and is present on a subset of thymocytes, peripheral T cells and monocytes or macrophages.

Co-expression of plexin-B1 and Met in human breast and ovary tumours enhances the risk of progression.

Background: Plex-B1, the receptor of Sema4D, has been implicated in tumour growth, angiogenesis and metastasis. The binding of Sema4D to Plex-B1 can trigger the activation of Met tyrosine kinase, thereby promoting cell dissociation and invasive growth. We tested the hypothesis that the expression of Plex-B1, either alone or in association with Met, can be of predictive value for tumour progression.

Mucous membrane plasmacytosis of the nose in a patient affected by B-cell chronic lymphocytic leukemia.

Mucous membrane plasmacytosis (MMP) is a rare idiopathic condition characterized by infiltration of the mucosa by non neoplastic plasma cells. In this report we describe a case of mucous membrane plasmacytosis of the nose in a 72-year-old woman patient affected by B-cell chronic lymphocytic leukemia (B-CLL). Two different biopsies of the lesion showed diffuse plasma cell, lymphocyte and granulocyte infiltration compatible with granulation tissue.

Diagnostic controversies in vascular proliferations of the thyroid gland.

Vascular lesions are one of the most controversial issues in thyroid pathology. The differential diagnosis includes benign lesions on one side, i.e.