Sinonasal Undifferentiated Carcinoma in a Patient Previously Treated for an Intestinal-Type Adenocarcinoma: Metachronous Neoplasms or Recurrence of a Different Tumor Type?

A case of a sinonasal undifferentiated carcinoma occurring 2 years after a successfully surgically treated intestinal-type adenocarcinoma has never been reported. Treatment modality of paranasal sinus cancer strictly depends on histology so it is important to recognize a different tumor type in the follow-up of these patients.

Alveolar Ridge Preservation with nc-HA and d-PTFE Membrane: A Clinical, Histologic, and Histomorphometric Study.

Alveolar ridge preservation has become a very common procedure following tooth extraction. This study presents a clinical, histologic, and histomorphometric analysis of postextraction bone changes using nanocrystalline hydroxyapatite (nc-HA) and exposed high-density polytetrafluoroethylene (d-PTFE) membrane. A total of 10 extraction sockets were treated.

Plaque-Like Myofibroblastic Tumor of Infancy: A New Case Report and Literature Review.

Plaque-like myofibroblastic tumor of infancy is a rare entity, with only a few reports described in the literature. Herein we present a new case of a nodular plaque-like lesion of the left lower back in an 18-month-old boy. The lesion might initially be thought to be a dermatofibroma, but the overall characteristics suggested the diagnosis of plaque-like myofibroblastic tumor of infancy.

Qualitative analysis of small (≤2 cm) regenerative nodules, dysplastic nodules and well-differentiated HCCs with gadoxetic acid MRI.

Background: The characterization of small lesions in cirrhotic patients is extremely difficult due to the overlap of imaging features among different entities in the step-way of the hepatocarcinogenesis. The aim of our study was to evaluate the role of gadoxetic-acid MRI in the differentiation of small (≤2 cm) well-differentiated hepatocellular carcinomas from regenerative and dysplastic nodules.

Methods: Seventy-three cirrhotic patients, with 118 focal liver lesions (≤2 cm) were prospectively recruited.

Socket Preservation with d-PTFE Membrane: Histologic Analysis of the Newly Formed Matrix at Membrane Removal.

This study aimed to evaluate the efficacy of an exposed high-density polytetrafluoroethylene (d-PTFE) membrane in preventing epithelial migration in postextraction sockets. For this purpose, a histologic description of the newly formed soft tissue underlying the membrane is presented. The periodontal status of the adjacent teeth was also evaluated to assess the gingival response.

Squamous cell carcinoma arising on a forearm free flap 21 years after hemiglossectomy.

Aim: Free and pedicled flap are methods of choice for reconstruction of post-surgical defects consequent to oral squamous cell carcinomas (SCCs), and missing intraoral mucosa is commonly reconstructed by the cutaneous component of the flap to guarantee an epithelial lining. Even if rare, cases of second tumors arising in the skin flap have been described. We present our experience reporting a clinical case.

MDCT classification of steatotic liver: a multicentric analysis.

Purpose: Fatty liver disease is the most common cause of chronic liver disease in the western world. The aim of this study was to analyze steatotic liver characteristics using multidetector row computed tomography (CT) to identify reliable criteria to identify the steatosis and quantify its severity.

Patients And Methods: Multiphasic CT scans of 51 consecutive adults (36 men, mean age 57.

Metastatic uterine leiomyosarcoma in the upper buccal gingiva misdiagnosed as an epulis.

Uterine leiomyosarcoma (LMS) is a rare tumor constituting 1% of all uterine malignancies. This sarcoma demonstrates an aggressive growth pattern with an high rate of recurrence with hematologic dissemination; the most common sites are lung, liver, and peritoneal cavity, head and neck district being rarely interested. Only other four cases of metastasis in the oral cavity have been previously described.

Giant “Panfacial” Chordoma Involving Skull Base With Intracranial Invasion.

Chordomas are rare, low-grade, primary malignant bone tumor arising from primitive notochord remnants of the axial skeleton. They rarely occur in an extraosseus craniofacial location such as nasopharynx, nasal septum, paranasal sinuses, and orbits. We report here an extreme case of "panfacial" chordoma involving middle and anterior skull base with intracranial invasion, which reached considerable size because of a delay in diagnosis and treatment.

Hepatocellular carcinoma (HCC) in non-cirrhotic liver: clinical, radiological and pathological findings.

Objectives: Our aim was to evaluate the clinical and pathological findings, mutidetector-row computed tomography (MDCT) and magnetic resonance imaging (MRI) appearances, treatment and 1-year survival of patients with HCC in non-cirrhotic liver.

Methods: Histopathological and laboratory findings of 30 non-cirrhotic patients with 32 HCCs were reviewed retrospectively. MDCT and gadobenate dimeglumine-enhanced MR images were evaluated in consensus by two radiologists in terms of HCC size, presence of tumour capsule, necrosis, haemorrhage, fat and calcification, and vascular involvement.

Magnetic resonance-guided focused ultrasound ablation in abdominal moving organs: a feasibility study in selected cases of pancreatic and liver cancer.

Purpose: This study was designed to evaluate preliminarily the feasibility and safety of magnetic resonance-guided focused ultrasound (MRgFUS) for treatment of solid tumors in the upper abdomen.

Methods: We enrolled one patient with hepatocellular carcinoma and two patients with pancreatic adenocarcinoma for MRgFUS ablation. Treatments were performed on a 3T scanner under controlled respiration.

The use of Tachosil as hemostatic sealant in nephron sparing surgery for Wilms tumor: preliminary observations.

Background: TachoSil, which is an absorbable collagen sponge coated with human fibrinogen and thrombin, has proven to enhance hemostasis and promote optimal wound healing in adults undergoing nephron sparing surgery (NSS). We report our preliminary experience using this hemostatic agent during NSS in children.

Methods: Prospective analysis of 3 patients with Wilms tumor (synchronous bilateral in one) undergoing NSS at our institution over an 18-month period.

Outpatient treatment for liposarcoma of the spermatic cord.

Liposarcoma of the spermatic cord is a very rare neoplastic disease. In effect little more than two hundred cases are described in literature. Natural history of this tumour is characterized by high local recurrence rate although hematogenic and lymphatic spread is usually a late event and involves high-grade tumours.

Intrahepatic paratesticular cyst: unique presentation of vestigial remnants of Wolffian duct.

To report on a case of a progressively enlarging intrahepatic cyst in a 1-year-old boy who also presented with bilateral undescended testes. At surgery, the lesion emerged from the anterior surface of the liver but was unexpectedly found to arise from the epididymis of the right testis, which was located intra-abdominally. The histologic findings were consistent with a paratesticular cyst of vestigial remnants derived from the Wolffian duct.

Protective role of parnaparin in reducing systemic inflammation and atherosclerotic plaque formation in ApoE-/- mice.

Atherosclerosis is a degenerative disease whose role in the onset and development of cardiovascular pathologies and complications is of importance. Due to its silent but progressive development, and considering the endothelial, immunological and inflammatory processes that are involved in its clinical course, this still relatively unknown pathological condition has been and continues to be a matter of investigation worldwide. Our experience with previous studies on atherosclerosis led us to investigate the possible influence of a low molecular weight heparin (LMWH) - Parnaparin® on the development and clinical course of atherosclerosis in double knock-out laboratory animals (ApoE-/- mice).

Neurotrophins and neurotransmitters in human palatine tonsils: an immunohistochemical and RT-PCR analysis.

Lymphoid organs are supplied by many nerve endings associated with different kinds of cells and macrophages. The role of these neuromediators on the release of locally active molecules is still unknown. Here we focused our attention on the expression of some neurotrophins (NTs), their high- and low-affinity receptors and several neurotransmitters in human palatine tonsils.

Adenomyomatosis of the gallbladder in childhood: report of a case and review of the literature.

Adenomyomatosis of the gallbladder is considered an acquired pathologic condition that affects adults, with only 2 cases previously described in childhood. We report on a 5-year-old boy with incidental detection of this lesion by ultrasonography. Pathologic and clinical assessments are discussed in addition to treatment decision-making, including current insights into the relation between adenomyomatosis and malignancy of the gallbladder.

Clinical and molecular evidence for c-kit receptor as a therapeutic target in neuroblastic tumors.

Purpose: Clinicobiological characteristics of neuroblastic tumor (NT) expressing c-kit tyrosine kinase receptor and/or its ligand, stem cell factor (SCF), are debated. This study aimed at investigating the clinicobiological features of primary NTs expressing c-kit and/or SCF in order to define the clinical relevance of selective therapeutic targeting.

Experimental Design: c-Kit and SCF expression was studied in 168 NTs using immunohistochemistry and in 106 of 168 using Northern blot.

Peribronchial innervation of the rat lung.

Mammalian peribronchial tissue is supplied by several peptide-containing nerve fibers. Although it is well established that different neuropeptides exert significant effects on bronchial and vascular tone in the lungs, the role played by some neuromediators on the general regulation, differentiation and release of locally active substances is still controversial. We studied the innervation of rat peribronchial tissue by immunohistochemical techniques.

Inflammation of the gastric cardia in children with symptoms of acid peptic disease.

Objectives: To assess the severity and causes of inflammation of the gastric cardia in children undergoing endoscopy for symptoms of acid peptic disease.

Study Design: Patients undergoing upper gastrointestinal endoscopy for symptoms of acid peptic disease had biopsies from gastric cardia, gastric, and esophageal sites, and 24-hour intraesophageal pH monitoring. Gastric cardia was defined at endoscopy as the anatomic zone from the squamocolumnar junction to 0.

Aberrant bcl-2 and bax protein expression related to chemotherapy response in neuroblastoma.

Neuroblastoma (NB) is a tumor of the sympathetic nervous system which develops in young children. It derives from cells of the embryonal neural crest that form many different tissues, including the adrenal medulla and the sympathetic ganglia. Survival rates for patients with neuroblastoma have remained unchanged despite intensive efforts to develop more effective treatment strategies.