1/10. Papillary cystadenoma: a rare tumor of the minor salivary glands.Papillary cystadenoma of the minor salivary glands is a rare benign neoplasm that clinically resembles mucous cysts. Characteristic histological features are diagnostic. However, salivary gland histology is particularly difficult to interpret. Primarily, as further clinical and histological differential diagnoses have to take into account the well-differentiated cystic mucoepidermoid carcinoma and the papillary cystic type of acinic cell carcinoma, both malignant neoplasms of the salivary glands. We report on a 39 year old female with a bluish cystic lesion at the buccal mucosa, which occurred 14 years after the excision of a similar appearing, histologically proven mucous retention cyst at the same location. The histology of this tumor, however, revealed a papillary cystadenoma. Although rare, benign and malignant salivary gland neoplasms occur in minor salivary glands, and are clinically indistinguishable from mucous retention cysts. The dermatologist should be familiar with these differential diagnoses, since different therapeutic consequences result from an early diagnosis obtained by excision and histological examination of oral cystic tumors.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
2/10. Necrotizing sialometaplasia. Report of a case.Necrotizing sialometaplasia occurred in a 46-year-old woman. This is an uncommon benign disease that typically begins with an ulcerated lesion on the hard palate and surrounding tissues. Clinical and microscopic findings show obvious similarity with a malignant neoplasm. Necrotizing sialometapiasis is a benign minor salivary gland disease. It is important since it may easily be confused with squamous cell carcinoma and mucoepidermoid carcinoma.- - - - - - - - - - ranking = 0.33333333333333keywords = neoplasm (Clic here for more details about this article) |
3/10. actinomycosis of the parotid masquerading as malignant neoplasm.BACKGROUND: Primary actinomycosis of the parotid gland is of rare occurrence and can mimic a malignant neoplasm both clinically as well as radiologically. CASE PRESENTATION: We present here a case of primary actinomycosis of the parotid gland presenting with a parotid mass lesion with erosion of skull bones. CONCLUSIONS: Clinical presentation of cervico-facial actinomycosis is characterized by the presence of a suppurative or indurative mass with discharging sinuses. The lesion demonstrates characteristic features on fine needle aspiration cytology and histology, however at times the findings are equivocal.- - - - - - - - - - ranking = 1.6666666666667keywords = neoplasm (Clic here for more details about this article) |
4/10. Salivary gland manifestations of sinus histiocytosis with massive lymphadenopathy: fine-needle aspiration cytology findings. A case report.Sinus histiocytosis with massive lymphadenopathy (SHML or Rosai-Dorfman disease) is a nonneoplastic, usually self-limiting disease. Alhough it affects all age groups, it is more commonly seen in young males in their first or second decades. The disease primarily manifests as painless lymphadenopathy of cervical region, but other nodal groups and extranodal sites may also be affected. Seldom SHML may involve the salivary glands. We present the cytologic features and differential diagnoses of one such case.A 45-yr-old woman presented with an enlarged submandibular gland on the left side with ipsilateral cervical lymphadenopathy that had been persisting for 1 mo. The gland and the two enlarged nodes measured 2.5 x 2.5 cm(2) each and were firm in consistency. Clinically, tumor of the salivary glands was suspected. Fine-needle aspiration (FNA) smears showed moderate cellularity, with large histiocytes dispersed in the background of intense lymphoplasmacytic infiltrate. These histiocytes showed lymphophagocytosis. Isolated stromal fragments consisting of fibrocytes were seen separate from salivary acinar clusters on repeat aspirations. The diagnosis of SHML involving left submandibular gland and ipsilateral lymph nodes was returned.When analyzed in the context of clinical findings (laboratory data), the cytologic features of SHML involving salivary gland could be differentiated from those of malignancies and other benign lesions, especially Kuttner's tumor of the submandibular gland, which mimics neoplasm clinically.- - - - - - - - - - ranking = 0.33333333333333keywords = neoplasm (Clic here for more details about this article) |
5/10. Necrotizing sialometaplasia obscuring an underlying malignancy: report of a case.Necrotizing sialometaplasia poses many diagnostic problems, both clinically and microscopically. Caution had most frequently been urged for distinguishing between malignancy and NS, so as to avoid mutilating surgical treatment resulting from the misdiagnosis of a lesion that is benign and self-limiting. This case has been presented to alert the practitioner to the possibility that NS may obscure an underlying malignant disease process, possibly resulting in delays in referral or treatment. The exceedingly rapid growth of this mesenchymal neoplasm may have caused obstruction of the blood supply to the overlying mucosa and submucosa, thereby producing the ischemic alterations observed in the first biopsy specimens. Some of the difficulties encountered in the detection and diagnosis of neoplasms arising in the parapharyngeal space were discussed, and some previously published suggestions to aid in these efforts were reiterated.- - - - - - - - - - ranking = 0.66666666666667keywords = neoplasm (Clic here for more details about this article) |
6/10. A mucocele of the submandibular gland.We encountered an unusual case of a mucocele arising from the submandibular gland. Among the limited number of cystic salivary gland neoplasms reported in the literature, there have been no reports, to our knowledge, of a similar cystic lesion. The unique characteristics of this mass permitted definitive diagnosis by computed tomographic scanning.- - - - - - - - - - ranking = 0.33333333333333keywords = neoplasm (Clic here for more details about this article) |
7/10. Necrotizing sialometaplasia of the nasopharynx.Necrotizing sialometaplasia is an uncommon salivary gland disease originally described by Abrams et al in 1973. The disease may occur wherever salivary gland tissue is found. Theories on the etiology of this disorder have been advanced, but never definitely determined. Treatment consists of adequate biopsy and observation until healing occurs at six to eight weeks. While the disease is considered benign, its similarity to more aggressive neoplasms can be both disturbing and misleading to the patient and the clinician. Such a case of necrotizing sialometaplasia of the nasopharynx is presented to demonstrate the clinical and histological similarity of this disease to carcinoma. In this case, the patient first presented with a neck mass which could easily have been mistaken for a regional metastasis. The current literature is reviewed.- - - - - - - - - - ranking = 0.33333333333333keywords = neoplasm (Clic here for more details about this article) |
8/10. Chronic sialadenitis of the submandibular gland (so-called Kuttner tumor).Two cases of chronic sialadenitis of the submandibular gland (so-called Kuttner tumor) are reported. Clinically, they are asymptomatic except for firm swellings which are similar to neoplasms. light microscopic observations revealed that the lesion is characterized by various degrees of atrophy and/or destruction of acini, infiltration of inflammatory cells, periductal fibrosis and lymph follicle formation. With the electron microscope, a marked increase of collagen fibers are observed throughout the gland parenchyma, and the secretory granules of acinal cells in the remaining acini remarkably decreased in number. We suggest that an autoimmune mechanism may play a role in case 1 and that an ascending infection through the duct system may be a main factor in case 2.- - - - - - - - - - ranking = 0.33333333333333keywords = neoplasm (Clic here for more details about this article) |
9/10. Management of the iatrogenically displaced anterior sublingual floor.Trauma and neoplasms may be responsible for ablative procedures performed in the anterior mandibular region. This surgery, as well as alveoloplasty, ridge augmentation, and placement of subperiosteal implants, may be responsible for the anterior malpositioning of the floor of the mouth along with its adnexa, which brings Wharton's carunculae directly over the crest of the ridge. A technique has been devised to correct this problem.- - - - - - - - - - ranking = 0.33333333333333keywords = neoplasm (Clic here for more details about this article) |
10/10. Minor salivary gland hyalinisation and amyloidosis in low-grade lymphoma of MALT.Two patients with low-grade lymphoma of mucosa-associated lymphoid tissue (MALT) arising in primary sjogren's syndrome developed solitary nodules in their lips. Histologically both lesions showed enlargement and hyalinisation of single minor salivary glands with acinar atrophy, loss of most ducts and conversion into almost acellular sclerotic eosinophilic masses. In one case the lesion was shown to contain an amyloid component. No amyloid was detected in the second case but deposition of collagen and basement membrane and sclerotic neoplasm were excluded.- - - - - - - - - - ranking = 0.33333333333333keywords = neoplasm (Clic here for more details about this article) |
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