Dermoscopy features of atypical fibroxanthoma: A multicenter study of the International Dermoscopy Society.

BACKGROUND/OBJECTIVES: Little is known about the dermoscopic features of atypical fibroxanthoma. METHODS: This was a case-control study. Atypical fibroxanthoma lesions were compared with a control group with non-melanoma skin cancer. RESULTS: Altogether 40 atypical fibroxanthoma were collected. Most developed in men (93%), appearing mainly as nodular (63%), amelanotic (93%) and ulcerated (78%) lesions. Most lesions were located on the scalp (55%) and the ears (13%). Dermoscopically, most atypical fibroxanthoma displayed red (83%) and white (70%) structureless areas and irregular linear vessels (43%). A series of features achieved statistical significance when comparing atypical fibroxanthoma with non-melanoma skin cancer. The presence of red and white structureless areas and white lines, and the absence of yellowish-white opaque scales, hairpin vessels and arborising vessels were predictive of atypical fibroxanthoma in univariate analysis. However, when squamous cell carcinoma was excluded from the analysis, none of the criteria achieved statistical significance. When basal cell carcinoma was excluded, three variables achieved statistical significance in predicting atypical fibroxanthoma: red, structureless areas, the absence of opaque yellowish-white scales and absence of white circles. CONCLUSIONS: Atypical fibroxanthomas seem to be barely distinguishable from basal cell carcinoma dermoscopically, but they are more easily distinguishable from a well to moderately differentiated squamous cell carcinoma. A histopathological examination is needed for the final diagnosis.

Serum Protein Profile Changes in Psoriatic Patients Undergoing Treatment With Infliximab.

UNLABELLED: The therapeutic paradigm in psoriasis includes antitumor necrosis alpha agents that have been proved effective and safe as long-term therapy. Recently, it has been described a correlation between the use of biologic agents and the occurrence of monoclonal gammopathies, which are haematological conditions characterized by clonal plasma cells proliferation producing a monoclonal immunoglobulin that accumulates in the blood. OBJECTIVE: The aim of this study is to detect electrophoretic abnormalities in psoriatic patients undergoing treatment with infliximab. RESEARCH DESIGN AND METHODS: A retrospective study evaluating all charts from the clinic database of all patients treated with infliximab. The evaluation of serum protein profile is routinely performed in the clinical setting during biologic therapies. We reported the occurrence MGUS in infliximab-treated patients. RESULTS: The study analysis included 141 charts. Overall, 23 patients showed a MGUS in their electrophoretic profile, though in 6 cases MGUS was detected at the baseline. Thereby, 17 cases (12.06% of the study population) developed MGUS during infliximab therapy. CONCLUSIONS: Serum protein electrophoresis test represents a useful tool to detect and monitor any potentially harmful condition that could occur during treatment with a biologic agent. Particularly, it could be crucial for the detection of MGUS, which does not affect clinical response, and it does not represent a criteria to withdraw the treatment.

Reasons for excision of skin tumors: a one-year prospective study in a tertiary skin cancer unit.

BACKGROUND: Biopsies and surgical excisions represent routine procedures in clinical settings dealing with skin cancer. OBJECTIVE: To evaluate the impact of clinical examination, dermoscopy, reflectance confocal microscopy and digital monitoring on the decision to excise or biopsy a lesion in routine practice. METHODS: Patients scheduled for biopsy or excision of a skin lesion were prospectively enrolled. The expert dermatologist was asked to select the main factor that prompted him/her to excise or biopsy the lesion. RESULTS: The most common reason for melanoma excision was clinical and dermoscopic morphology (70.3%), followed by dermoscopy (11.4%), monitoring (8.9%) and clinical context (8.2%). Most basal and squamous cell carcinomas were recognized both clinically and dermoscopically, while 18.6 and 15.0%, respectively, could only be detected with dermoscopic examination. CONCLUSION: Each part of the clinical examination has a contributory role in the diagnosis of melanoma and other skin cancers.

When basal cell carcinomas became giant: an Italian multicenter study.

BACKGROUND: Giant basal cell carcinoma (GBCC) is a basal cell carcinoma (BCC) enlarged in a diameter more than 5 cm. Since GBCCs are a highly infrequent entity and the occurrence rate is approximately 0.5-1% out of all BCC types, only anecdotal cases are reported, and causes and characteristics inducing development of this tumor are not defined. OBJECTIVES: Evaluate causative factors and clinico-histological characteristics of GBCCs. METHODS: The study is a 6-month, hospital-based case series study performed in 12 Italian dermatologic centers. RESULTS: A total of 59 cases and 458 control BCCs were collected. No significant differences existed between the two groups if we take into account social or cultural factors. The average duration of GBCCs is considerably longer than controls. GBCCs are located on unexposed areas while BCCs are on areas not usually covered by clothes. Superficial histological subtype was more frequent in the BCCs group, while infiltrative in GBCCs. GBCCs showed significantly higher local invasiveness, and greater metastatic capacity. More than half of GBCCs had been previously treated with one or more treatments. CONCLUSIONS: Patients with GBCCs appear to belong to two categories: (i) those who present with GBCC due to delay in accessing medical attention, and (ii) those who have BCCs previously treated with inappropriate strategies. Only very few cases can be carried out with intrinsic biological features of tumor aggressiveness. Social and cultural conditions do not appear to be involved in the development of GBCCS. These observations may help clinicians in selecting correct therapeutic strategies in the treatment of BCCs, which give rise to GBCC.

Lymph nodes' capsular naevi are associated with high naevus count in melanoma patients: a case-control study.

Capsular naevi (CNs) in lymph nodes (LNs) are relatively common, occurring in 3-22% of patients who undergo LN surgery for melanoma. Naevus count is one of the principal risk factors for melanoma, as well as a prognostic factor in melanoma patients. However, little is known about the occurrence of CN in melanoma patients on the basis of their naevus count. A case-control study was performed, to look at the naevus count differences between CN-positive and CN-negative melanoma patients. Cases (CN positive) were matched for age, sex and Breslow thickness with controls (CN negative). Total naevus count was recorded at diagnosis and compared between the two groups. This study was conducted in a tertiary referral academic centre for skin cancer. Twenty-two positive CN patients were matched with 22 negative CN patients. The mean Breslow thickness was 2.66 mm (range: 0.6-9). Positive CN patients were significantly associated with an increasing naevus count on their skin (P=0.02). Patients with more than 100 naevi reported an odds ratio of 7.78 on having a CN compared with patients with fewer than 50 naevi on their skin (P=0.02). An increased melanocytic migration to LNs might be the reason for the association between CNs and a high number of melanocitic naevi on the skin. This could shed some light on the physiology of melanocytes and could be an easy way to predict patients at greater risk of having CNs.

A solitary pink lesion: dermoscopy and RCM features of lichen planus.

We present an unusual onset of cutaneous lichen planus (LP) in a middle-aged patient. The initial presentation as solitary, indolent pink lesion required further investigations to rule out malignancy, especially amelanotic melanoma. Dermoscopy and reflectance confocal microscopy findings were found to be helpful in our case in addressing the correct diagnosis.

Dermoscopy as an adjuvant tool for the diagnosis and management of basal cell carcinoma.

The list of dermoscopic criteria associated with basal cell carcinoma (BCC) have been several times updated and renewed. Up to date, dermoscopy has been shown to increase diagnostic and therapeutic accuracy, since provides valuable information about histopathologic subtype, a more accurate assessment of the true extension of tumor, the presence of pigmentation not visible to the naked eye and the treatment choice for BCC. In the current review, we provide an update of the traditional and latest knowledges on the value of dermatoscopy for the diagnosis and management of BCC.

Usefulness of QuantiFERON®-TB Gold test in psoriatic patients under treatment with tumour necrosis factor blockers.

OBJECTIVE: Infliximab is a human/mouse chimeric anti-tumour necrosis factor (TNF)-α antibody that is effective in the management of psoriasis. Anti-TNF treatments may reactivate latent tuberculosis infection (LTBI); therefore, screening for LTBI is mandatory before starting any anti-TNF-α therapy. The aim of this study is to evaluate the usefulness of the QuantiFERON®-TB Gold (QFT-G) test in psoriatic patients under treatment with infliximab. RESEARCH DESIGN AND METHODS: A retrospective study had been performed on patients affected by psoriasis who had been treated with infliximab from 2003 to 2012 at a single centre. MAIN OUTCOMES MEASURES: QFT-G was tested by a standard TB enzyme-linked immunosorbent assay, based on detection of interferon-γ release from sensitized leucocytes exposed to the synthetic Mycobacterium tuberculosis antigens at baseline and every 6 months until the end of treatment. RESULTS: A total of 140 patients were included. At baseline, 7 QFT-G tests were positive and 133 tests were negative. Of the 133 patients, 11 (8%) who were negative at baseline became QFT-G test positive during treatment. Of those 11 patients, 5 had a reversion during treatment. Of the 133 patients, 122 (92%) who were negative at baseline remained negative. CONCLUSIONS: It was found that the development of positive QFT-G tests, observed in 8% treated with infliximab, was not associated with pulmonary or extra-pulmonary tuberculosis.

Photoletter to the editor: Collision tumor of melanoma and atypical fibroxanthoma of the scalp.

Several combinations of different skin tumors occuring one adjacent to the other or even in a single lesion have been described up to date. Collision tumors involving atypical fibroxanthoma and melanoma are extremely uncommon. Herein we present a case of melanoma associated with AFX and discuss on the usefulness of dermoscopy in the clinical diagnosis of collision tumors.

The dermatoscopic universe of basal cell carcinoma.

Following the first descriptions of the dermatoscopic pattern of basal cell carcinoma (BCC) that go back to the very early years of dermatoscopy, the list of dermatoscopic criteria associated with BCC has been several times updated and renewed. Up to date, dermatoscopy has been shown to enhance BCC detection, by facilitating its discrimination from other skin tumors and inflammatory skin diseases. Furthermore, upcoming evidence suggests that the method is also useful for the management of the tumor, since it provides valuable information about the histopathologic subtype, the presence of clinically undetectable pigmentation, the expansion of the tumor beyond clinically visible margins and the response to non-ablative treatments. In the current article, we provide a summary of the traditional and latest knowledge on the value of dermatoscopy for the diagnosis and management of BCC.