Malignant inflammation in cutaneous T-cell lymphoma: a hostile takeover

Cutaneous T-cell lymphomas (CTCL) are characterized by the presence of chronically inflamed skin lesions containing malignant T cells. Early disease presents as limited skin patches or plaques and exhibits an indolent behavior. For many patients, the disease never progresses beyond this stage, but in approximately one third of patients, the disease becomes progressive, and the skin lesions start to expand and evolve. Eventually, overt tumors develop and the malignant T cells may disseminate to the blood, lymph nodes, bone marrow, and visceral organs, often with a fatal outcome. The transition from early indolent to progressive and advanced disease is accompanied by a significant shift in the nature of the tumor-associated inflammation. This shift does not appear to be an epiphenomenon but rather a critical step in disease progression. Emerging evidence supports that the malignant T cells take control of the inflammatory environment, suppressing cellular immunity and anti-tumor responses while promoting a chronic inflammatory milieu that fuels their own expansion. Here, we review the inflammatory changes associated with disease progression in CTCL and point to their wider relevance in other cancer contexts. We further define the term "malignant inflammation" as a pro-tumorigenic inflammatory environment orchestrated by the tumor cells and discuss some of the mechanisms driving the development of malignant inflammation in CTCL

Eosinophils in glioblastoma biology

Glioblastoma multiforme (GBM) is the most common primary brain tumor in adults. The development of this malignant glial lesion involves a multi-faceted process that results in a loss of genetic or epigenetic gene control, un-regulated cell growth, and immune tolerance. Of interest, atopic diseases are characterized by a lack of immune tolerance and are inversely associated with glioma risk. One cell type that is an established effector cell in the pathobiology of atopic disease is the eosinophil. In response to various stimuli, the eosinophil is able to produce cytotoxic granules, neuromediators, and pro-inflammatory cytokines as well as pro-fibrotic and angiogenic factors involved in pathogen clearance and tissue remodeling and repair. These various biological properties reveal that the eosinophil is a key immunoregulatory cell capable of influencing the activity of both innate and adaptive immune responses. Of central importance to this report is the observation that eosinophil migration to the brain occurs in response to traumatic brain injury and following certain immunotherapeutic treatments for GBM. Although eosinophils have been identified in various central nervous system pathologies, and are known to operate in wound/repair and tumorstatic models, the potential roles of eosinophils in GBM development and the tumor immunological response are only beginning to be recognized and are therefore the subject of the present review

Guess What! Malignant eccrine spiradenoma

A 56 year-old, female patient was admitted to our department with a mass on her left forearm, which had been present for approximately 15 years. She had noticed a sudden enlargement with erythemateous change of the overlying skin during the past eight months. It was mildly painful when she exerted pressure on it

Cutaneous bronchogenic cysts

Case 1 A 13-year-old girl had a swelling and draining sinus on the suprasternal notch which had been present since infancy. The lesion had previously been treated with many methods, but none had been successful. Clinically, there was a mobile cystic mass (3 cm x 2 cm) on the suprasternal notch, together with a sinus mea with a small amount of mucoid secretion (Fig. 1)

Eruptive widespread Spitz nevi: Can pregnancy be a stimulating factor?

Spitz nevus is most commonly a benign solitary lesion. Agminated or disseminated Spitz nevi represent an uncommon manifestation of this nevus. We report an unusual case of Spitz nevi arising and disseminating during pregnancy

Giant condyloma acuminatum

Background. Giant condyloma acuminatum is a warty lesion that is characterized by its large size and propensity to infiltrate into deeper tissues contrasting with its microscopically benign pattern. It is proposed that giant condyloma represents an intermediate lesion between condyloma acuminatum and verrucous carcinoma

Psoriasis and Vascular Disease—Risk Factors and Outcomes: A Systematic Review of the Literature

BACKGROUND: Psoriasis afflicts 2-3% of the world’s population. Affected patients commonly have risk factors for cardiovascular disease (CVD). In addition, psoriasis is independently associated with CVD and mortality. PURPOSE: To determine which CVD risk factors are associated with psoriasis independent of confounders, whether psoriasis is associated with CVD independent of CVD risk factors, and whether there is increased mortality among patients with psoriasis. DATA SOURCES: MEDLINE, Embase, and Cochrane Collaborations from inception through October 2009. We reviewed bibliographies of retrieved articles for additional references. STUDY SELECTION: Cross-sectional, cohort-based, case-control, and randomized controlled trials which involved patients with psoriasis. DATA EXTRACTION: Two investigators independently reviewed studies and resolved any discrepancies by consensus. DATA SYNTHESIS: Of the 2,303 articles identified by literature search, 90 studies met inclusion criteria for this review; 15 were cohort-based studies, 45 were case-control, and 30 were cross-sectional. LIMITATIONS: The quality of evidence was limited by study heterogeneity and lack of large scale prospective studies with long-term follow-up. CONCLUSIONS: Patients with psoriasis demonstrate a higher prevalence of cardiovascular risk factors and appear to be at increased risk for ischemic heart disease, cerebrovascular disease, and peripheral arterial disease. This increase in vascular disease may be independent of shared risk factors and may contribute to the increase in all-cause mortality. Future research should aim to more confidently distinguish between a true causal relationship or merely an association resulting from multiple shared risk factors. Physicians should screen for and aggressively treat modifiable risk factors for CVD in patients with psoriasis