颌骨骨促结缔组织增生性纤维瘤的影像学特点和鉴别诊断

目的:探讨颌骨骨促结缔组织增生性纤维瘤的影像学征象,以提高对其诊断和鉴别诊断的准确性。方法:回顾分析8例颌骨骨促结缔组织增生性纤维瘤患者的影像学资料,其中男3例,女5例;年龄2～70岁(平均28岁);2例为上颌骨,6例为下颌骨。8例中4例有局部复发,复发的平均年限为1a。无远处转移。结果:X线平片上,病灶长轴沿上、下颌骨的长轴走向,呈现偏心性或中心性生长。骨质破坏呈膨胀性、溶骨性,肿瘤骨与正常骨之间的过渡带较窄,无明显的骨质反应线(除1例复发的小病灶外)。骨皮质膨胀变薄,无骨膜反应。病灶内部可有分房或切迹。CT像上,髓腔密度增高,正常骨小梁被软组织密度肿块所取代,软组织肿块基本均匀,病变突破骨皮质,侵犯周围组织形成肿块,肿块内无钙化和骨化。MRI上,T1WI为均匀等信号,T2WI为不均匀的高信号;增强后病灶无明显强化。波谱见胆碱波。下颌骨病变发生于下颌角、后牙区、下颌支,上颌骨发生于后牙和上颌结节区。结论:了解骨促结缔组织增生性纤维瘤的影像学特点非常重要,因其较其他的纤维性病变更具有侵袭性,手术需要更大的局部切除范围和更长期密切的随访,以防局部复发。     

Sex cord-stromal tumors of the testis

Testicular tumors apart from those in the germ cell family are uncommon and are mostly sex cord-stromal tumors and may pose a major diagnostic challenge. This review focuses on the clinicopathologic features of these uncommon neoplasms, pertinent differential diagnoses, relevant immunohistochemical and molecular findings as well as the recent updates proposed by the World Health Organization (WHO). Contrast between these neoplasms as seen in the male and female gonad will also be made when warranted. The commonest sex cord-stromal tumor of the testis is the Leydig cell tumor which, when seen in children, is often associated with sexual precocity. The histologic features are generally those of an easily recognized oxyphilic neoplasm but various peculiarities such as microcysts and spindling of the tumor cells may case diagnostic difficulty on occasion. In the male, in contrast to the female, the most common sex cord-stromal tumor of epithelial nature is the Sertoli cell tumor. Most of these fall in the not otherwise specified category and are usually characterized by a diagnostically helpful at least focal hollow or solid tubular pattern. Occasional malignant Sertoli cell tumors have a predominantly diffuse pattern sometimes interrupted by septa with a lymphocytic infiltrate that can cause seminoma to be mimicked. Rare Sertoli cell tumors are associated with marked sclerosis. The so-called large cell calcifying Sertoli cell tumor, may be sporadic or associated with manifestations of the Carney syndrome. A distinctive entity referred to as intratubular hyalinizing Sertoli cell neoplasia occurs in the testis of young boys with Peutz-Jeghers syndrome. It is often bilateral, microscopic and associated with gynecomastia. Testicular granulosa cell tumors are much rarer than their ovarian counterparts but can be similarly subdivided into adult and juvenile forms. In the male, the juvenile granulosa cell tumor has a particularly striking tendency to occur in the first 6 months of life. The primitive appearance of the nuclei and brisk mitotic activity of the juvenile granulosa cell tumor may result in a misdiagnosis of a more malignant neoplasm. The histologic spectrum of the adult granulosa cell tumor is as seen in the more common female examples. Pure stromal tumors of the testis are much less common than similar tumors in the ovary and the well-known thecoma is remarkably rare in the testis. Fibromas of stromal derivation in the testis should be distinguished from fibromas that originate from the tunica albuginea and from examples of the non-neoplastic process nodular pseudotumor.     

Cementifying fibroma of the frontal bone: a case report

Cementifying fibromas are rare fibro-osseous tumours that are usually found in the jaws. We report a 10-year-old boy who presented with a mass in the frontal bone causing frontal bossing and proptosis. The preoperative diagnosis was not clear despite computed tomographic and magnetic resonance imaging. The lesion was resected completely and found to be a cementifying fibroma. It was reconstructed at the same operation and he made a good recovery with no sign of recurrence.     

Pathological fracture in non-ossifying fibroma with histological features simulating aneurysmal bone cyst

A 12-year-old-girl presented with a fracture of an osteolytic lesion of the distal radius. A 7-year-old girl presented with a fracture of an osteolytic lesion of the femoral shaft. In both cases it was a non-ossifying fibroma with fracture misdiagnosed at pathology as aneurysmal bone cyst. Fractures through non-ossifying fibromas may alter the histological pattern of the initial lesion in two ways: firstly, by the presence of blood pigments due to the fracture, and secondly, by formation of new bone. Radiological–pathological correlation is essential to avoid histological errors after pathological fracture in a non-ossifying fibroma. Received: 27 January 1998; Revision received: 17 June 1998; Accepted: 25 July 1998     

A syndrome of digital fibromas,facial pigmentary dysplasia,and metacarpal and metatarsal disorganization

We report on a girl with fibrous tumors involving hands and feet associated with unusual brachydactyly and facial abnormalities with pigmentary skin lesions. The multiple, infiltrative fibrous tumors clinically resembled recurring digital fibromata (RDF) of infancy, but eosinophilic cytoplasmic inclusion bodies pathognomonic for RDF were not demonstrated in her tumor cells. Skeletal alterations of the hands and feet comprised brachymesophalangy with cone-shaped epiphyses and variable shortening and deformity of the metacarpals and metatarsals. Facial abnormalities included upward slant of palpebral fissures, primary telecanthus with epicanthal folds, and a depressed nasal tip, along with a small fibrous tumor on the left eyelid. The patient also had patchy, brownish discolorations of the face. The clinical, radiological, and histological constellation in the patient may represent a hitherto undescribed hamartomatous syndrome. Am. J. Med. Gen. 80:1–5, 1998. © 1998 Wiley-Liss, Inc.     

Ameloblastic fibroma: A fine-needle aspiration case report

Fine-needle aspiration biopsy of an ameloblastic fibroma, an unusual odontogenic tumor related to ameloblastoma, was performed on a 38-yr-old man with a slowly enlarging left facial mass. Aspiration of the tumor yielded a cellular sample composed of a mixture of mesenchymal and epithelial cells, arranged, respectively, in thick mats and complex solid structures outlined by columnar cells with central regions reminiscent of stellate reticulum. A diagnosis of odontogenic tumor was conferred, and the lesion was surgically biopsied and then resected. The key cytologic feature distinguishing this lesion from other odontogenic tumors was fragments of hypercellular stroma. The differential diagnosis includes ameloblastoma, ameloblastic fibrosarcoma, other odontogenic tumors, intraosseous adenoid cystic carcinoma, trabecular adenoma, and basal-cell carcinoma. Diagn. Cytopathol. 1997; 17:280–286. © 1997 Wiley-Liss, Inc.     

MRI鉴别诊断中枢神经系统孤立性纤维瘤的特征及临床意义

目的 探究MRI鉴别诊断中枢神经系统孤立性纤维瘤的特征及临床意义.方法 选择2014年1月至2020年10月接收的50例疑似中枢神经系统孤立性纤维瘤患者作为研究对象,所有患者均接受MRI、CT以及病理检查,对其检查结果进行回顾性分析.以病理检查结果为金标准,比较MRI、CT检查对中枢神经系统孤立性纤维瘤的诊断效能.结果...     

右肺术后切口出现侵袭性纤维瘤1例及文献回顾

侵袭性纤维瘤病,在临床上发病率很低,是一种低度恶性来源于间叶组织的肿瘤。该疾病大约50%以上发生在腹部,四肢和深部软组织的发病率次之 ［1］。目前病因尚不清楚。Gurbuz等 ［2］认为,10%～20%的患者在患有侵袭性纤维瘤病的同时也患有家族性腺瘤性息肉病（familial adenomatous...     

公安民警皮肤软纤维瘤与代谢综合征危险因素相关性研究

目的 比较公安民警皮肤软纤维瘤患者和正常对照组代谢综合征的基础危险因素指标,探讨皮肤软纤维瘤与代谢综合征危险因素相关性。研究皮肤软纤维瘤患者皮损IGF-1受体的表达,探讨皮肤软纤维瘤发病机制。方法 选取2016年5月~2017年11月来我院皮肤科就诊的公安民警软纤维瘤患者100例作为观察组,选取一般资料与观察组匹配的正常人100例作为对照组。比较两组空腹血糖、空腹胰岛素、动脉血压、血清甘油三酯（TG）、低密度脂蛋白（LDL-C）、身高、体重等指标。计算和比较两组体质指数（BMI）和胰岛素抵抗指数（HOMA-IR）。采用免疫组化Elivision法,比较两组胰岛素样生长因子受体表达的差异,半定量分析。结果 观察组患者空腹血糖、空腹胰岛素、动脉血压、TG、LDL-C、基础危险因素指标均高于对照组,差异具有统计学意义（P＜0.05）。观察组患者的BMI和HOMA-IR高于对照组,差异具有统计学意义（P＜0.05）。皮肤软纤维瘤皮损IGF-1R的表达阳性率为59.00%,高于正常皮肤的31.00%,差异有统计学意义（P＜0.05）。结论 皮肤软纤维瘤与代谢综合征可能存在相关性,皮肤软纤维瘤的发病机制可能与胰岛素抵抗有关。     

Cap-assisted endoscopic sclerotherapy for hemorrhoids: Methods,feasibility and efficacy

AIM: To evaluate the methodology, feasibility, safety and efficacy of a novel method called cap-assisted endoscopic sclerotherapy(CAES) for internal hemorrhoids.METHODS: A pilot study on CAES for grade Ⅰ to Ⅲ internal hemorrhoids was performed. Colon and terminal ileum examination by colonoscopy was performed for all patients before starting CAES. Polypectomy and excision of anal papilla fibroma were performed if polyps or anal papilla fibroma were found and assessed to be suitable for resection under endoscopy. CAES was performed based on the requirement of the cap, endoscope, disposable endoscopic long injection needle, enough insufflated air and sclerosing agent.RESULTS: A total of 30 patients with grade Ⅰ to Ⅲ internal hemorrhoids was included. The follow-up was more than four weeks. No bleeding was observed after CAES. One(3.33%) patient claimed mild tenesmus within four days after CAES in that an endoscopist performed this procedure for the first time. One hundred percent of patients were satisfied with this novel procedure, especially for those patients who underwent CAES in conjunction with polypectomy or excision of anal papilla fibroma.CONCLUSION: CAES as a novel endoscopic sclerotherapy should be a convenient, safe and effective flexible endoscopic therapy for internal hemorrhoids.