Necrotizing sialometaplasia: Manifestation of a localized unclassified vasculitis.

Necrotizing sialometaplasia is a rare benign and self‑limiting disease, which commonly affects the minor salivary glands. Typically, it involves the seromucinous glands located at palate, buccal mucosa, tongue, tonsil, nasal cavity, trachea, larynx, maxillary sinus, and retromolar trigone. We report two such cases of necrotizing sialometaplasia to create awareness among the pathologists and surgeons because of its close morphological and clinical resemblance to squamous cell carcinoma. We have also documented that, the ischemic necrosis of salivary gland is the result of a vasculitic process.

Imaging findings of rare tumors or tumor-like lesions in liver grafts after liver transplantation / 器官移植

Objective To investigate the imaging findings of rare tumors or tumor-like lesions in liver grafts after liver transplantation.Methods Imaging data of 4 patients with rare tumors or tumor-like lesions in the liver grafts of patients after liver transplantation from December 2006 to August 2013 in the Third Affiliated Hospital of Sun Yat-sen University were reviewed.Findings of computerized tomography ( CT ) and ( or ) magnetic resonance imaging ( MRI) plain scan and dynamic enhanced MRI of liver lesions in these patients were analyzed specially.Results In the 4 patients, 3 cases were misdiagnosed , including undifferentiated liver sarcoma , secondary lymphoma and eosinophilic granuloma.One case was diagnosed correctly with hepatic metastases of gallbladder carcinoma.The undifferentiated liver sarcomas appeared as cystic and solid space occupying masses with significant and persistent enhancement in the surrounding solid and separating parts .No enhancement was observed in the cystic parts , which increased rapidly in a short term.No edema area around the lesions was observed , but many calcifications were detected.The secondary hepatic lymphoma appeared as intrahepatic multiple nodules , most of which presented uniform signal intensity with moderate enhancement in every phase.No intrahepatic vascular invasion was observed but extrahepatic lymphadenectasis was detected .Bleeding was observed in a few lesions.The liver eosinophilic granuloma appeared as multiple liver lesions with variable signal intensity and enhancement modes , which suggested that the lesions were consisted of variety of elements and in the different disease stages.Most of the lesions were observed with progressive circled enhancement.The recurrence of gallbladder carcinoma and hepatic metastasis after liver transplantation appeared as a intrahepatic hypodensity lesion with slight enhancement in arterial phase and slight hypodensity in portal phase.Retroperitoneal lymph nodes were observed swelled and fused.Conclusions Rare tumors or tumor-like lesions in liver grafts have distinctive imaging features.Imaging examinations are useful for the early detection of these rare tumors or tumor-like lesions in liver grafts.Imaging findings combining with disease history and clinical manifestations can help to make correct diagnosis.

Granuloma piogénico en la edad pediátrica: reporte de un caso / Pyogenic granuloma in children: a case report

Granuloma Piogénico (GP) es una lesión reactiva producida por un crecimiento excesivo del tejido conectivo, es frecuente en la mucosa bucal muy especialmente en el tejido gingival. Se trata de una patología de crecimiento rápido, sangrante y se asocia a la presencia de irritantes locales, microtraumatismos, entre otros factores. Tiene importante predilección por el género femenino entre la segunda y quinta década de la vida. Lesiones como malformaciones vasculares, lesión periférica de células gigantes y sarcoma de Kaposi son sus principales diagnósticos diferenciales y el tratamiento de elección es la escisión quirúrgica. A continuación se presenta un caso clínico poco común debido a las características clínicas de la lesión y la edad del paciente, pues se trata de un infante del género masculino de 5 años de edad, que acudió a la Facultad de Odontología de la UCV, referido por su odontólogo general, debido a la presencia de una lesión tumoral en el sector posterior derecho maxilar, adyacente a la cara distal del 55 de 2.5cm de tamaño. Se realizó la escisión quirúrgica de la lesión posterior a la evaluación de los exámenes preoperatorios y fue analizada histopatológicamente, donde se confirmó el diagnóstico inicial de GP

Pyogenic Granuloma (PG), is a reactive lesion caused by an excessive connective tissue growth and it frequently appears on oral mucosa, especially the gingiva. The PG present fast growth, bleeding propensity and it is associated, among other factors, to local irritation and minor trauma. It has predilection for female patients between second and fifth decade of life. The main differential diagnosis can be made with lesions such as: vascular malformations, peripheral giant-cell lesion and Kaposi's sarcoma. Surgical excision is the treatment of choice. This article presents a case report of an uncommon lesion regarding its rare clinical features and age of the patient. A 5 year old male patient who attended the Facultad de Odontología of Universidad Central de Venezuela, referred by his dental practitioner, presented a tumor-like lesion. The lesion was 2.5 cm in size and located on posterior right maxilla next to distal surface of 55. Surgical excision was performed after full laboratory test evaluation. The histopathology findings confirmed initial diagnose of PG

The imaging manifestation of rib bone benign-malignant tumor or tumor-like lesion / 中国基层医药

ObjectiveTo explore the imaging characteristics of rib bone benign-malignant tumor or tumorlike lesion.MethodsRetrospectively analyzed 57 cases of imaging data by confirmation of clinical surgical pathology,the chest photograph 45 cases,the chest CT check 37 cases.ResultsAccording to imaging findings and lesion involve in the amount of ribs divided into:cystic expansive bone destruction 26 cases,dissolve osseous bone destruction 20 cases,bone hyperplasia sclerosis 8 cases,osseous bumps 3 cases,single bone manifestation 32 cases,many bone manifestation 25 cases.ConclusionDissolve osseous bone destruction or companion soft organization lump or companion pathologic bone fracture were seen in most malignant tumor.Cystic expansive bone destruction was seen in most benign tumor or tumor-like lesion,the chest film combined CT check was contribute to raise diagnosis accuracy rate of rib tumor and tumor-like lesion.

Tumor-Like Presentation of Organized Chronic Subdural Hematoma

An organizing hematoma with tumor-like presentation in association with a chronic subdural hematoma(CSDH) has not been reported. Most reported cases of an intracranial mass in association with a CSDH have been associated with primary or metastatic neoplasm. A 72-year-old man presenting with an intracranial contrast-enhancing mass in association with a CSDH in magnetic resonance images is reported. Operative exploration revealed the mass to be an organized hematoma adjoining cortical draining veins between the outer and inner membranes of a chronic subdural hematoma. This report adds another important differential diagnosis to various primary and metastatic neoplasms that have been reported in the literature when encountering an intracranial mass in association with a CSDH. Neurosurgeons should be aware of the possibility and, if necessary, should apply more diagnostic modalities than magnetic resonance images before deciding management plans.

The clinical value of three-dimensional ultrasonography for breast cancer operation / 肿瘤研究与临床

Objective To evaluate the clinical value of three-dimensional ultrasonography(3DUS) for breast cancer operation. Methods Sixty-eight patients with breast cancer were examined with two-dimensional ultrasonography(2DUS) and three-dimensional ultrasonography before operation. Results 3DUS not only improved the rate of sonography's diagnosis for breast cancer(88.2 % for two-dimension, 94.1 % for three-dimension), but also clearly showed patterns of breast lumps with the neighboring structure and the adjacent three-dimensional relations and the level of violations, such as the skin, chest muscle, chest wall, etc(the display rate is 75.0 %, 63.6 % and 60.0 % respectively). And it displayed the blood stream distribution in the mass of breast tumor more clearly and sensitively (95.6%). Conclusions 3DUS demonstrated the tumor's configuration, relations and the blood stream distribution. It had great significance in the operation for breast cancer.

Evaluation of CT diagnosis of mediastinal neoplasms and tumor-like lesion / 肿瘤研究与临床

Objective To investigate the efficacy of CT on diagnosis of mediastinal neoplasms and tumor-like lesion to analyze the causes of misdiagnosis. Methods Forty two patients were examined with CT, 11 patients received contrast CT scan. All cases were confirmed by pathology. Results Various mediastinal neoplasms and tumor-like lesions with heterogeneous density have their own special demonstration on CT image and frequently occurred sites. The accuracy of diagnosis before surgery is 71.4 %(30/42). Conclusions CT is useful in improving the preoperative diagnosis rate of mediastinal neoplasms or tumor-like lesions and in helping clinicians work out treatment plan.

Imaging Diagnosis of Tumors and Tumor-like Lesion of Fibrous Histiocyte Oringin in the Femora:An Analysis of 17 Cases / 实用放射学杂志

Objective To study the imaging diagnosis of tumors and tumor-like lesion of fibrous histiocyte origin in the femora.Methods Imaging features of femoral fibrous histiocyte neoplasm and tumor-like lesion were restrospectively analyzed in 17 cases ,including 16 cases proved by surgery and pathology, and one case was follow-up studied in five years.All cases were examined by plain X-ray flim, CT scan in 5 cases. Results There were fibrous dysplasia of bone in 8 cases,non-ossifying fibroma in 5cases ,fibrosarcoma of bone and benign fibrous histiocyte tumor of bone in 1 case respectively ,malignant fibrous histiocyte tumor of bone in 2 cases. They were diagnosed correctly before operation in 13 cases (13/17,76.5%) and misdiagnosed in 4 cases.Conclusion The most of femoral fibrogenic tumor and tumor-like lesion can be dingnosed correctly before operation ,because of they are of specific imaging features, while femoral fibrous histocyte original tumors are not of specific imaging findings, it must combine with clinical and pathologic data in diagnosis.