Objective To explore the CT features of malignant tumor in nasal cavity and paranasal sinuses.Methods CT images of 45 patients with malignant tumor in nasal cavity and paranasal sinuses with pathological verification were retrospectively analyzed.Results Carcinoma located in nasal cavity and paranasal sinuses were 20 cases and most of lesions(14/20) appeared inhomogeneous mass.Adjacent structures in(34/20) or out of the cavity(20/20) were involved in the formation of tissue mass.Obvious bone destruction was found in lesions in 18 cases which featured by bone structure chips or defects,but the swelling of tissue around noses and check was not often showing(2/20).Sixty cases were T-cell lymphoma and most of lesions(11/16) arisen from nasal vestibule,mainly consisting of mixed type(11/16),density of multiple lesions(12/16)were homogeneous.The structure in cavity mainly involved(36/18),but the swelling of tissue around noses and check was often showing(8/16).All 5 cases T-cell lymphoma showed no or mild bone destruction showing bony absorption.One case of malignant schwannoma and 2 cases of B-cell lymphoma were similar appearances to carcinoma.One case of osteoid tissue was found in lesion of osteogenic sarcoma.CT signs were not characteristic in 4 cases malignant melanoma.Conclusion It is available to indicate the circumstances of tumor lesions and to identified diagnosis in nasal cavity and paranasal sinuses by CT.Some tumors as well malignant lymphoma in the nasal cavity and paranasal sinuses are relative characteristic on CT images,which can be diagnosed in some degree.
收集1998年4月～2004年3月经手术病理证实的鼻腔和鼻旁窦恶性淋巴瘤(NHL)8例,回顾性分析其CT表现,以期提高对本病的认识,协助临床诊断.
鼻息肉是一种常见病. X线柯、瓦氏片在诊断和鉴别诊断鼻息肉中起着重要作用,但有一定限度.随着功能性鼻内窥镜手术治疗的应用,在诊断和鉴别诊断鼻息肉中,了解鼻息肉临床症状与 X线平片、 CT征象之间的关系,特别是术前了解病变部位、范围、形态、大小、副鼻窦受累情况及鼻腔、副鼻窦的解剖结构尤为重要.收集经手术病理证实的鼻息肉 83例进行回顾性分析,以提高对 X线平片和 CT征象的认识.现报道如下:
目的回顾分析54例乳房肿块的CT征像及X线软组织摄片征像,比较二者检出阳性率,讨论乳房肿块的诊断和鉴别诊断.方法收集经穿刺活检、手术病理证实的54例乳房肿块的CT片及X线软组织摄影片,比较分析肿块的性质、程度、范围、有无钙化,淋巴结有无转移,着重分析了CT征像.结果 54例乳房肿块良性38例,分别为乳腺增生24例,乳腺囊肿8例,纤维腺瘤6例,恶性肿瘤16例,经手术证实为乳腺癌15例,恶性乳突状瘤1例.CT诊断与病理证实符合率为96.3%,X线软组织摄片诊断与病理证实符合率为70.4%.结论结果表明CT诊断乳房肿块的阳性率明显高于X线软组织摄片,并且CT的空间分辨率和密度分辨率均较X线软组织摄片高.
空蝶鞍综合征(ESS),过去认为此征少见,自MRI问世以来,为诊断本病提供了更多的信息,本院经MR检查诊断74例,就其发病机理、临床特点及MRI征象分析如下:
