Verrucous sarcoidosis of the skin simulating squamous cell carcinoma.

Here, we report a case of a 38-year-old woman with a history of systemic sarcoidosis who developed cutaneous verrucous sarcoidosis simulating a squamous cell carcinoma. This modality of presentation is unusual in both caucasic patients and in woman and may represent a diagnostic challenge for dermatologists.

Ear melanoma: influence of perichondrium involvement in evaluating surgical strategy.

Adequate treatment of melanomas of the external ear offers unique surgical challenges because of the complex anatomical features of the auricle and the need for proper oncologic aggressiveness, as well as for valid aesthetic results. In this study, we evaluated nine different cases of melanoma of the auricle treated in our Institute between 1994 and 2008. Every enrolled patient underwent surgical excision, nonetheless reconstruction was performed with different surgical techniques. In accordance with histological reports, we could observe the absence of neoplastic cells in perichondral bone and in cartilagenous tissue, providing further assurance concerning the importance of preserving the outer ear in expectation of reconstruction. As a matter of fact, it has been proven that it is possible to reconstruct the auricle while guaranteeing oncologic safety in melanomas with a Breslow thickness >1 mm. Therefore, an excision preserving the cartilagenous tissue, thus allowing an efficient full-thickness cutaneous grafting may guarantee good functional and aesthetic results. In conclusion, the suggested therapeutic management may be considered in <1 mm melanomas without taking further unnecessary oncologic risks.

Cutaneous manifestations in a series of 417 patients with SARS-CoV-2 infection: epidemiological and clinical correlates of chilblain like lesions.

A variety of dermatological lesions have been described in COVID-19, although the prevalence and pathogenic relationship remain unclear particularly for chilblain-like lesions. Dermatological examination was performed in a prospective cohort of consecutive patients seen at the service for SARS-CoV-2 infection. Out of 417 patients with confirmed SARS-CoV-2 infection [median age 29.5 years (range 15-65); 62.5% males], dermatological lesions were detected in 7 (1.7%). Three patients had acral lesions; their age (range) was 15-29 years; all had a negative nasopharyngeal swab and developed IgG and/or IgM-specific antibodies; all presented none or mild symptoms. A fourth patient remained negative at repeated testing; mother, father and sister had a documented mild COVID-19. Non-acral lesions were observed in four older patients, with severe COVID-19. Chilblain-like lesions may be the sole manifestation of SARS-CoV-2 infection; their presence in asymptomatic school children and adolescents should be considered a potential signal of familial or community spread of the virus.

Intratumor morphologic and transcriptomic heterogeneity in V600EBRAF-mutated metastatic colorectal adenocarcinomas.

BACKGROUND: Intratumor heterogeneity (ITH) is described as the presence of various clones within one tumor, each with their own unique features in terms of morphology, inflammation, genetics or transcriptomics. Heterogeneity provides the fuel for drug resistance; therefore, an accurate assessment of tumor heterogeneity is essential for the development of effective therapies. The purpose of this study was to dissect morphologic and molecular ITH in colorectal adenocarcinoma. MATERIALS AND METHODS: A series of 120 V600EBRAF-mutated (V600EBRAFmt) consecutive metastatic colorectal adenocarcinomas was assessed for morphologic heterogeneity. The two heterogeneous components of each specimen underwent a histopathological, immunohistochemical and molecular characterization to evaluate: histologic variant, grading, tumor-infiltrating lymphocytes (TILs), mismatch repair proteins' expression, KRAS/BRAF/NRAS mutations, microsatellite instability (MSI) status and consensus molecular subtype (CMS). RESULTS: Thirty-one out of 120 (25.8%) V600EBRAFmt primary colorectal adenocarcinomas presented a heterogeneous morphology. Among these, eight cases had adequate material for molecular profiling. Five out of the eight (62.5%) cases resulted instable at MSI testing. The majority (62.5%) of the samples showed a CMS4 phenotype based on gene expression profiling. Heterogeneity in CMS classification was observed in four out of eight cases. One out of eight cases presented significant heterogeneity in the number of TILs between the two components of the tumor. CONCLUSIONS: Although the distribution of the immune infiltrate appears relatively conserved among heterogeneous areas of the same tumor, changes in gene expression profile and CMS occur in 50% of V600EBRAFmt adenocarcinoma cases in our small series and might contribute to variability in response to anticancer therapy and clinical outcomes. Assessment of morphological and molecular ITH is needed to improve colorectal cancer classification and to tailor anticancer treatments and should be included in the pathology report.

Early detection by magnetic resonance imaging of fetal cerebral damage in a fetus with hydrops and cytomegalovirus infection.

We discuss the use of magnetic resonance imaging (MRI) to reveal early fetal neurological involvement of cytomegalovirus (CMV) infection. A woman presented at 21 weeks of pregnancy with active CMV infection. Cerebral ultrasound examination had been normal. An MRI scan revealed a thickened germinal matrix, which was histologically confirmed, associated with underdevelopment of the gyri. Brain MRI proved particularly useful in identifying the findings not disclosed by routine ultrasound during pregnancy and subsequently confirmed at histology.

Onset of Schamberg Disease and Resolution of Alopecia Areata During Treatment of Atopic Dermatitis With Dupilumab

No disponible

Plexiform fibromyxoma of the gallbladder.

We report the unusual case of a plexiform fibromyxoma, occasionally assessed in a lithiasic gallbladder. The full thickness assessment of the gallbladder wall revealed an intra-mural, well demarked multi-nodular tumor (1 cm), consisting of a plexiform growth of spindle cells, included within a fibromyxoid stroma with a rich micro-vascular network. The tumor cells featured no nuclear atypia, nor mitotic activity. At the immunohistochemical profiling, the spindle shaped cells unequivocally featured vimentin, SMA, HHF35, collagen IV, and CD34; no cells expressed CD117, PDGFRA, CD10, desmin, GFAP, EMA, and S-100. Faint STAT6 nuclear expression was observed in isolated tumor cells. The molecular profiling did not revealed any CKIT and PDGFRA genes mutations. The uncommon site of the tumor presentation and its aberrant CD34 expression both confer to the reported case a unique place among the myxoid tumors of the gastrointestinal tract.

Primary central nervous system lymphomas: clinico-pathologic and immunohistochemical analysis of 30 cases.

AIMS AND BACKGROUND: Primary Central Nervous System lymphomas are attracting mounting interest because of their increasing incidence in an immunocompetent population and as sporadic tumors. A new lymphoma classification has been proposed, based on new morphologic entities and on advanced immunologic and molecular techniques. METHODS AND RESULTS: The study concerns the clinical and pathologic characterization of 30 cases of primary central nervous system non-Hodgkin's lymphomas in non-HIV patients using a wide monoclonal antibodies panel. Comparative evaluation of effectiveness and reliability between surgery and stereotactic biopsies was made according to Kiel and Real lymphoma classifications. There were 24 high-grade and only 3 low-grade lymphomas. Three stereotactic biopsies were not diagnostic. CONCLUSIONS: Stereotactic procedures were confirmed as the most immediate and least aggressive approach to CNS tumors, but inadequate sampling caused a deadlock to a full lymphoma diagnosis, which requires immunohistochemical and sometimes also molecular studies. However, it should be stressed that morphologic criteria (tumor cell cytology and neoplastic cuffing of the vascular walls) maintain their diagnostic effectiveness.

Prognostic value of bcl-2, p53 and Ki-67 in invasive squamous carcinoma of the uterine cervix.

The aim of this study was to evaluate the immunohistochemical expression of the markers bcl-2, p53 and Ki67 and their relation to the classical clinical-pathological prognostic factors in invasive squamous cellular carcinoma of the cervix. Since bcl-2 and p53 are implicated in the regulation of programmed cell death, very probably they play a role in carcinogenesis and consequently become prognostic factors.

The ovarian teratomas. A histopathological review of 77 cases.

Seventy-seven cases of ovarian teratomas were studied according to examination modality of surgical specimens and to histologic patterns and frequency of different tissues components. The main histogenetic conjectures were debated also.

Prognostic value of protein p53 and ki-67 in invasive vulvar squamous cell carcinoma.

The aim of this research was to detect new valid prognostic indicators that allow us to choose the best therapy and follow-up for patients with a poor prognosis. One hundred and twenty-nine patients with invasive squamous carcinoma of the vulva treated at the Gynecology Clinic of the University of Padua between January 1, 1975 and December 31, 1999 have been evaluated: Protein p53 and ki-67 were studied by immunohistochemical investigations and their prognostic significance was evaluated. The relation with the classic clinico-pathological prognostic factors was also studied. The results showed a close association between tissue overexpression of the two proteins and clinico-pathological characteristics of the aggressivity of the neoplasm. Moreover, the group of positive p53 patients with a diffuse distribution pattern of ki-67 resulted in having a somewhat shorter survival with respect to the groups with negative p53 and/or a focal pattern. Such negative prognostic significance was confirmed by the results of the multivariate analysis performed with the Cox model which shows that patients with p53 positive values and a diffuse pattern have a higher relative risk of death compared to patients with p53 negative values and focal pattern (p=0.0001). The statistical significance of the prognostic value of the association of p53 and ki-67 thus seems to give these two factors greater weight with respect to the others we investigated.

Ki-67 expression in vulvar carcinoma. Preliminary results.

A proliferating cell nuclear antigen (Ki-67) expression was investigated in 73 cases of invasive vulvar cancer, to detect new diagnostic and prognostic factors. We individualized, like Hendriks (1994), two general patterns of reactivity: 1) diffused positivity in all tumoral tissue with a bad prognosis; 2) focal positivity, localized at the edge of tumoral aggregates. Moreover, within focal patterns, one group with positivity to MIB-l of 0.2-6% and another group of 7-9% with different prognoses (better in the first group). Histotype, lymph-nodal status, FIGO stage are strictly correlated with distribution of Ki-67; on the contrary, no correlation was found with grading and number of mitoses.

Primary malignant melanoma of the female urethra: a case report.

A case of primary malignant melanoma of the female urethra is reported. Physical examination and visceral studies confirmed the primary character of the tumour and histologic examination proved it to be nodular malignant melanoma. Less than 100 cases have been previously reported. The role of immunohistochemical stains to substantiate the diagnosis is stressed. Therapy and prognosis are briefly discussed.

A voluminous paraovarian cyst. Case report.

Paraovarian cysts represent 9-10% of all annexial tumescences. The Authors present a case of voluminous paraovarian cyst in young woman referring abdominal heaviness and swelling for about eight months. During laparotomy a 35 cm cyst with liquid content was revealed. The cystic mass was extirpated preserving the woman's reproductive capacity.

Anatomopathologic aspects of ovarian endometriosis.

The Authors reviewed 284 cases of endometriosis; it interested all age ranges with prevalence of four and fifth decades and showed a range of 19-68 years. Favourite sites was ovary with 271 cases, remaining were: tubes, omentum, vagina, vulva and cecum. The histological appearance is similar to normal endometrium but these foci react to hormonal stimulation variably.

Vaginal endometriosis. Two case reports and review of the literature on rare urogenital sites.

The authors present two rare cases of vaginal endometriosis. Moreover, the literature regarding other sites of low genital tract involvement is reviewed.