201 research outputs found
Procedures and operating instructions for diagnosis in vascular anomalies and pathology
In the last 30 years a revolution has occurred in the diagnosis and management of vascular anomalies. The great changes began with Mulliken and Glowacki separation of hemangiomas and vascular anomalies. Their work has now morphed into the ISSVA classification. Subsequently the discovery of the significance of the presence of GLUT-1 in the diagnosis of the hemangiomas of infancy gave us a new marker in our quest for accurate classification. Now genetic breakthroughs have led us into a \u201cStar Wars\u201d like environment in the experimental laboratory. During all these events the critical role of the pathologist has become more evident. Understanding the histopathology of anomalies has greatly aided in our approach to therapies. Moreover, genetic findings do not have full significance without the morphologic framework
Rapidly-Disintegrating Laminar Extrudates: Preliminary Experiments upon an Age Appropriate Pediatric Formulation
The aim of the present investigation is to produce rapidly disintegrating laminar extrudates for delivering ibuprofen in the mouth of paediatric patients. This laminar shape is particularly convenient for drug delivering in the mouth and can be easily cut in cut in different sizes allowing for a convenient adjustment of the drug dose depending on the age of the patient. Due to the fact that in paediatric formulations, the selection of the excipients is always a challenging issue and the reduction of their amount is always highly desirable, in this study to select the most appropriate composition to achieve a rapid disintegration and simultaneously permit a high amount of ibuprofen in the system, an experimental design for mixtures was employed and the disintegration time in simulated saliva was used as experimental response. In addition, after solid state analyses to check possible insurgence of drug-excipients interactions, laminar extrudates were characterised in terms of mechanical properties and in vitro dissolution performances. Extrudates with the desired uniform laminar shape, constant thickness (2 mm) and a very high content of drug (82% wt) were produced. These products exhibited a short disintegration time. The dose for a patient of 6-12 years corresponded to a length of extrudate between 1-1.5 cm, perfectly compatible with a formulation orodispersible thin laminar extrudate intended for a paediatric patient (Figure 1)
Microcystic adnexal carcinoma of the centrofacial region: a case report
Microcystic adnexal carcinoma is a rare, locally aggressive neoplasm with both eccrine and follicular differentiation and a high probability
of perineural invasion of the centrofacial region. Given the histopathological features of this tumour, early diagnosis is essential for
adequate management. This report refers to a case of microcystic adnexal carcinoma of the nasogenial region, with infiltration of the deep
planes extending to the anterior wall of the maxillary sinus. Surgical treatment involved wide demolition of the centrofacial region followed
by reconstruction using four locoregional flaps: an Indian flap and a Mustardé flap were used for cutaneous reconstruction; a septal flap to
support the maxillogenial region; a mucosal flap to separate the nasal cavities
procedures and operating instructions for diagnosis in vascular anomalies and pathology
In the last 30 years a revolution has occurred in the diagnosis and management of vascular anomalies. The great changes began with Mullikenand Glowacki separation of hemangiomas and vascular anomalies. Their work has now morphed into the ISSVA classification. Subsequentlythe discovery of the significance of the presence of GLUT-1 in the diagnosis of the hemangiomas of infancy gave us a new markerin our quest for accurate classification. Now genetic breakthroughs have led us into a "Star Wars" like environment in the experimental laboratory.During all these events the critical role of the pathologist has become more evident. Understanding the histopathology of anomalieshas greatly aided in our approach to therapies. Moreover, genetic findings do not have full significance without the morphologic framewor
Actinomycosis of the Tongue: A Case Report and Review of Literature
Background: Actinomycosis of the tongue is an uncommon, suppurative infection of lingual mucosa, caused by actinomyces. The clinical diagnosis may present serious difficulties because of its ability to mimic other lesions, including both benign and malignant neoplasms. Methods: Here, we describe the case of a 52-years-old patient affected by an asymptomatic, tumor-like tongue swelling, then diagnosed as actinomycosis. A review of tongue localization of actinomycosis is also reported, with emphasis on clinical findings and therapy. Results and Conclusion: Early diagnosis and treatment, with pus drainage and systemic antibiotic therapy, are pivotal to avoid severe and life-threatening complications
Central nuclear palisading in nodular basal cell carcinoma: morphological and immunohisto-chemical concerns
An observational study regarding the rate of growth in vertical and radial growth phase superficial spreading melanomas
The natural history of superficial spreading melanomas (SSMs) involves the progression from a radial growth phase (RGP) to a vertical growth phase (VGP). Currently, a patient\u2019s history represents the only method to estimate the rate of tumor growth. The present study aimed to verify whether the estimated rate of growth (ROG) of SSMs with a RGP or VGP exhibited any differences, and to evaluate the possible implications for the most important prognostic determinants. ROG was quantified as the ratio between Breslow\u2019s thickness in millimeters (mm) and the time of tumor growth in months, defined as the time between the date that the patient had first noticed the lesion in which melanoma subsequently developed and the date on which the patient first felt this lesion changed. A total of 105 patients (58 male and 47 female) were studied. Of these, 66 had VGP-SSMs, whilst 39 had RGP-only SSMs (RGP-SSMs). No significant differences in age and gender were observed between these groups. The mean Breslow\u2019s thickness in patients with VGP-SSMs was significantly greater than in patients with RGP-SSMs (0.78\ub10.68 vs. 0.48\ub10.22 mm, P=0.0096). Similarly, the ROG was observed to be higher in VGP-SSM vs. RGP-SSM patients (0.13\ub10.16 vs. 0.065\ub10.09 mm/month, P=0.0244). In patients with VGP-SSMs, Breslow\u2019s thickness and ROG were significantly higher for tumors with a mitotic rate of 651 mitosis/mm2 compared with those with <1 mitosis/mm2 (1.15\ub10.96 vs. 0.56\ub10.30 mm, P=0.0005; and 0.188\ub10.20 vs. 0.09\ub10.12 mm/month, P=0.0228, respectively). According to these results, two subsets of SSMs exist: The first is characterized by the presence of mitosis and a higher ROG, while the second exhibits a more indolent behavior and is characterized by an RGP only. Given the differences in the Breslow\u2019s thickness and ROG, clinicians must be aware of the possible diagnostic delay in these subsets of melanoma that, differently from true nodular melanomas, generally fulfill the classical ABCD clinical criteria
A rare case of transmural endometriosis in primary adenocarcinoma of the rectum
Intestinal endometriosis of the rectum and sigmoid colon, occurring in up to 34% of pelvic endometriosis, mimics a wide number of conditions that are difficult to differentiate from inflammatory or malignant diseases. Herein we report the first case of transmural endometriosis concomitant with advanced primary rectal adenocarcinoma, presenting with obstructive symptoms. Correct diagnosis based on morphological identification and immunohistochemical characterization of the two entities is crucial for treatment
Calciphylaxis in a dialysis patient treated by intralesional and systemic sodium thiosulphate on top of multifactorial intervention
Calciphylaxis, or calcific uraemic arteriolopathy (CUA), represents a life-threatening disease. Dialysis patients and those receiving warfarin are seen as populations at higher risk for CUA. Treatments for CUA are still uncertain despite the poor survival of the disease. Administration of intravenous sodium thiosulphate (STS) has been purposed to treat CUA in dialysis patients. Due to the poor tolerability of STS, characterized by nausea, hypocalcaemia, metabolic acidosis and QT-interval prolongation, its intralesional administration has been reported. We herein present the improvement of wounds in a haemodialysis patient affected by CUA, treated by multipronged intervention including both intravenous and intralesional STS
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