Primary malignant lymphoma of the breast

Primary malignant lymphoma of the breast is a rare tumor. Recently, we encountered a case of primary malignant lymphoma of the breast and present here the mammographic and ultrasonographic (US) findings with the pathology of this rare breast tumor. The patient was a 47-year-old woman with a left breast mass. Mammography showed a 3.0 × 1.5 cm, lobulated high-density mass with well-defined margins. US revealed a lobulated mass with fairly well-defined borders, hypoechoic and heterogenous internal echoes, and posterior acoustic enhancement. It was difficult to differentiate malignant lymphoma from breast carcinoma by imaging studies. This type of breast cancer should be added to a differential diagnosis when a solitary tumor is found in the breast on mammography.     

Computerized tomographic differentiation of adenocarcinoma and malignant lymphoma of the stomach

CT examinations in gastric adenocarcinoma (12 patients) differ clearly from the diffuse wall thickenings in malignant gastric lymphoma (7 patients) by displaying focal thickenings of the gastric wall. Before performing biopsy, it is often necessary to effect differentiation and staging, and to lay down a preliminary interdisciplinary oncological treatment concept.     

Primary malignant lymphoma of the brain of true histiocytic origin

Primary lymphomas are rare brain tumours. A case is reported where the true histiocytic origin was proved by autopsy. The CT features and the differential diagnoses in malignant lymphomas of the brain are discussed.     

脑原发性恶性淋巴瘤1例

患者男性,42岁。无明显诱因出现持续性头痛,腹压增高时加剧,伴头晕、恶心、呕吐1月余,经抗炎、止痛治疗无效后入院。无发热、抽搐、意识障碍。查体：神志清楚,浅表淋巴结未触及,双肺呼吸音清,腹平软,肝脾未触及,     

Primary malignant lymphoma of the maxillary sinus: CT and MRI

We reviewed the CT and MRI of seven patients with primary malignant lymphoma of the maxillary sinus to find if there are characteristic imaging findings suggestive of the disease. The images were analysed for appearance, size, signal, internal characteristics, extent of tumour, bone change and lymph node enlargement. In two patients, the tumour first presented with mucosal thickening. In the remaining five, the tumours were an expansile mass 4–6 cm in diameter at the time of detection. Although it was difficult to distinguish tumour from mucosa or obstructed fluid on CT, T2-weighted MRI enabled us to separate tumour from normal mucosa or fluid. In two patients, the tumours were heterogeneous. Calcification and haemorrhage were observed in one patient. Periantral soft-tissue infiltration was always present, even when tumour appeared as slight mucosal thickening. Posterior extension was seen in all patients. Permeative and lytic bone destruction accompanied most cases of periantral soft-tissue infiltration; mixed destruction and sclerosis was also observed. Mucosal thickening with periantral soft-tissue infiltration may suggest malignant lymphoma of the maxillary sinus in its early form. Various types of bone change may accompany the periantral soft-tissue infiltration. Received: 25 January 1999 Accepted: 21 July 1999     

Primary malignant fibrous histiocytoma of the stomach: (a case report)

A case of primary malignant fibrous histiocytoma (MFH) of the stomach is reported. The patient was a 51-year-old man who had a laparotomy for a malignant gastric tumour diagnosed by radiological studies and endoscopic examination. An inoperable gastric malignancy was found at operation. Histopathological studies of tissue biopsied at surgery showed characteristic light microscopic findings and strong positivity for alpha-1-antitrypsin by immunoperoxidase technique indicating the diagnosis of malignant fibrous histiocytoma. The absence of any other soft tissue or retroperitoneal tumour strongly indicated the stomach is the primary site.     

Burkitt's lymphoma of the stomach

An unusual case of American Burkitt's lymphoma originating in the stomach of an elderly man is presented. Computed tomography revealed diffuse infiltration of the gastric wall by a solid tumor measuring 2.5 to 5.5 cm in thickness. Despite such bulky tumor, however, distensibility of the stomach was preserved because Burkitt's lymphoma does not induce desmoplastic reaction and linitis plastica.     

原发性乳腺淋巴瘤X线表现及与病理相关性探讨

目的探讨原发性乳腺淋巴瘤钼靶X线表现特征及其与病理相关性，提高影像医师对该病的认识。方法回顾性复习27例经手术病理证实的原发性乳腺淋巴瘤，其中术前有完整钼靶X线资料的患者为14例。对该14例患者的临床、钼靶X线表现特征及病理进行了回顾性分析。患者均为女性，年龄28～56岁。右乳7例，左乳6例，双乳1例。结果14例原发性乳腺淋巴瘤中，13例为非霍奇金淋巴瘤(Non-Hodgkin lymphoma，NHL)(弥漫型12例，结节型1例)，1例为霍奇金淋巴瘤(Hodgkin lymphoma，HL)。乳腺X线片上9例表现为单乳单发肿块，2例表现为单乳多发肿块，1例为双乳多发肿块，2例表现为单侧乳腺致密浸润伴皮肤增厚。X线片上共发现18个肿块，肿块直径从0．7—5．0cm，平均直径2．6cm，其中13个肿块边缘清楚，5个肿块边缘表现为部分清楚部分不清楚，均未见毛刺、钙化或漏斗征及皮肤凹陷征等乳腺癌典型X线征象。此外，该组资料显示淋巴瘤X线表现与其组织病理学类型无相关性。结论原发性乳腺淋巴瘤的临床及影像学表现缺乏特异性，最后诊断需依靠病理学确诊。如临床乳腺检查考虑恶性且伴有腋下肿大淋巴结，而X线征象表现为良性或不典型乳腺癌者应提示除有不典型髓样癌可能外，还应考虑到淋巴瘤，及时做针吸或切取活检，有利于临床选取恰当的治疗方案。     

颅骨及硬膜原发性恶性淋巴瘤三例

例1 男,27岁.发现枕后肿块1年,伴右额颢部持续性胀痛.体检全身浅表淋巴结未触及肿大.人类免疫缺陷病毒(HIV)阴性,无器官移植后使用免疫抑制剂及先天性免疫缺陷等原因引起的免疫功能低下和中枢神经系统以外的全身系统淋巴瘤.     

Primary breast sites of malignant non-Hodgkin's lymphoma. Apropos of 10 cases]

The authors describe 10 cases of malignant non Hodgkin's lymphoma in a mammary site in women aged 38 to 82 years. The clinical examination and the sometimes suggest an adenocarcinomatous lesion, thus leading to a useless surgical exeresis. An initial histological study provides the diagnosis. A complete assessment of extension allows an accurate staging and the refinement of the therapeutic schedule. Exclusive radiation therapy seems to be justified in low-malignancy forms remaining strictly confined to the breast. For the high- and medium-malignancy forms, the essential weapon is chemotherapy, which seems to improve the duration and rate of remission.     

原发性甲状腺恶性淋巴瘤的CT表现

目的：探讨原发性甲状腺恶性淋巴瘤(PMLT)的CT表现特点。方法：回顾性分析了13例PMLT的CT表现,并与病理所见作对照研究。结果：根据甲状腺肿块的形态可分为3型：单个结节型(1例),占7．7％,密度均匀;巨块型,9例(一叶3例,双叶6例),占69．2％,密度与肌肉接近,多均匀细腻;渗透型(3例),占23．1％,强化的甲状腺轮廓外见略低密度的肿瘤组织向周围间隙渗透。对照病理,甲状腺正常结构破坏,被异型淋巴细胞浸润,可累及血管壁,但不破坏血管腔。结论：PMLT的CT表现以巨块型累及双叶多见,密度均匀,而出现渗透征象为其特征性表现。