1/205. Cavernous haemangioma of the submandibular salivary gland. Salivary gland haemangioma is more common in the parotid than in any other salivary gland. Parotid haemangioma is considered to be the most common salivary gland tumour in infants, but is also occasionally encountered in adults. A case of cavernous haemangioma affecting the submandibular salivary gland in an adult woman is presented. The striking histological feature is the presence of numerous vascular channels assuming a periductal arrangement. ( info) |
2/205. Coexistence of histoplasma granulomas and Warthin's tumor in the submaxillary salivary gland. A 49-year-old woman had a mass in the left submaxillary salivary gland that histologic examination showed to be a Warthin's tumor. In addition, there were multiple necrotizing and confluent granulomas that stained positive for histoplasma organisms using the Gomori methenamine silver stain. The histoplasma organisms in the lymphoid tissue with Warthin's tumor is an extrapulmonary manifestation of the disease which probably spread from the lungs via the lymphatics. The coexistence of the Warthin's tumor and the granulomas is a rare incidental finding. ( info) |
3/205. carcinosarcoma of the submandibular salivary gland. We report a rare case of submandibular salivary gland carcinosarcoma ('true' malignant mixed tumour) which occurred in a 77-year-old man. Microscopic examination showed a neoplasm comprised of sarcomatous elements (chondrosarcoma, rhabdomyosarcoma and osteosarcoma) with tabular salivary ductal adenocarcinoma. A short review of the literature is also presented and the poor prognosis of these tumours, in spite of complete surgical removal and additional radiation therapy and chemotherapy, is discussed. ( info) |
4/205. Synchronous pleomorphic adenomas of the major salivary glands: a case report. The presentation of multiple distinct tumors in major salivary glands is rare. Although the most common tumor with bilateral synchronous or metachronous development is the Warthin tumor, pleomorphic adenomas have been diagnosed simultaneously as well. We report the case of a female patient who was diagnosed with pleomorphic adenomas in the right parotid and submandibular glands, concomitant with sialolithiasis affecting the submandibular gland. This patient had been exposed to head and neck radiotherapy in childhood, which may have played a role in the development of her tumors. A review of the relevant literature is included. ( info) |
5/205. Gastric adenocarcinoma with tonsil and submaxillary gland metastases: case report. Local invasion, hematogenous and lymphatic metastases are the major modes of spreading gastric cancer. The most common sites of metastases in patients with gastric cancer are liver, peritoneum, omentum, lungs and mesentery. Of the two pathological types of gastric cancer, intestinal-type gastric cancer showed preferential metastasis to the liver, whereas the diffuse-type showed a preference for peritoneal involvement and lymph node metastasis. However, metastases of gastric cancer to the head and neck regions are not common. The hematogenous route appears to account for a great majority of metastases to the head and neck regions. Malignant neoplasm metastases to major salivary glands or tonsils are not common. Several patients with cancers from the infraclavicular area have been reported with parotid gland or tonsil metastases. However, metastasis of gastric adenocarcinoma to the tonsils or submandibular glands is rare. We present a patient with recurrent gastric adenocarcinoma with both tonsil and submandibular gland metastases which is even rarer. ( info) |
6/205. Hybrid carcinoma of the salivary gland: salivary duct adenocarcinoma adenoid cystic carcinoma. AIMS: Hybrid tumours of the salivary gland are rare neoplasms that have been described only in the parotid and palate. Their recognition is important particularly when the component tumours have different biological behaviours. The occurrence of a submandibular hybrid tumour has not been reported. methods AND RESULTS: We describe a case of a 36-year-old woman with a hybrid carcinoma composed of salivary duct adenocarcinoma and adenoid cystic carcinoma of the right submandibular gland. There was no evidence of a pre-existing or concurrent pleomorphic adenoma. The presence of the two components was verified by differential immunohistochemical staining using a panel of cytokeratin, vimentin, smooth muscle actin and S100. The patient subsequently developed metastases to the pelvis, lumbar, vertebra and wrist. The clinical course in this patient was consistent with the behaviour of the salivary duct adenocarcinoma component. CONCLUSIONS: The histogenesis of hybrid tumours is largely unknown, but in this case it may represent diverging differentiation of luminal tumour cells. Because some histological features of different salivary gland tumours overlap, immunohistochemistry is a valuable tool especially when used to delineate the components of a hybrid tumour. ( info) |
7/205. Small cell undifferentiated carcinoma of the submandibular gland: immunohistochemical evidence of myoepithelial, basal and luminal cell features. A primary small cell undifferentiated carcinoma of the submandibular gland is reported. Histological studies revealed that the major part of this tumor was composed of cells slightly larger (10-14 microm) than lymphocytes. These tumor cells showed myoepithelial-cell differentiation, which was confirmed by the immunohistochemical and ultrastructural findings. Furthermore, some of them showed luminal-cell and basal-cell differentiation immunohistochemically. However, there was no evidence of neuroendocrine differentiation. These findings demonstrated that the tumor had the features of all the salivary ductal components (myoepithelial, basal, and luminal cells) and supported that the tumor might arise from the salivary duct. Furthermore, it supports the hypothesis of multipotential stem cells as the origin for small cell undifferentiated carcinomas in salivary glands. ( info) |
| Sialoblastomas are rare perinatal epithelial salivary tumors, with only 22 reported cases in the literature. While they have been reported to occur predominantly in the parotid gland, we present one case of sialoblastoma of submandibular gland origin. The surgical management of this patient is discussed. Histopathologic examination, including immunochemical, ultrastructural and cytogenetic studies, was performed. Pertinent literature is reviewed. ( info) |
| Salivary tissue intraductal papillomas are rare, benign tumours that predominantly affect minor salivary glands. We report a case of an intraductal papilloma arising in the unusual site of the submandibular gland. The tumour was completely excised and recurrence is not expected. A brief review of this histologically distinct lesion is presented. ( info) |
10/205. Submandibular accessory salivary gland causing Warthin's duct obstruction. BACKGROUND: Submandibular masses are mostly secondary to sialolithiasis. Salivary gland tumors should be considered in the differential diagnosis. In this case report, an unusual cause of Warthin's duct obstruction caused by an accessory salivary gland tissue is presented. methods: sialography revealed the submandibular accessory salivary gland. RESULTS: submandibular gland excision was performed and histopathologic investigation showed the accessory salivary tissue, which was narrowing the Warthin's duct. CONCLUSIONS: In cases of a symptomatic submandibular accessory gland, excision extirpation of the submandibular gland and accessory salivary tissue should be undertaken. ( info) |