1/6. Malignant mixed mesodermal tumor presenting as metastatic lymph node adenosquamous cell carcinoma: a case report.A solitary inguinal lymph node metastasis from a poorly differentiated adenosquamous cell carcinoma of unknown origin in a 52-year-old female is described. The patient was reported to have had a 2-cm palpable mass in the left inguinal area for three years. She had made regular annual clinic visits for Pap smears since the age of 45 years. Her last visit was eight months prior to a complaint of progressive abdominal distention and dull pain of three months' duration. physical examination showed a huge pelvic mass, and ultrasound and magnetic resonance imaging of the abdomen showed a 12-cm complex solid mass on the left ovary. The patient underwent a complete excisional biopsy of the left inguinal lymph node. Frozen section pathology revealed a poorly differentiated adenosquamous cell carcinoma. Exploratory laparotomy immediately followed pathologic confirmation of malignancy of the left inguinal lymph node. Complete surgical staging including abdominal cytology, total abdominal hysterectomy, bilateral salpingo-oophorectomy, infracolic omentectomy, retroperitoneal lymph node sampling and excisional biopsy was performed for all suspicious lesions. Stage IIIC malignant mixed mesodermal tumor (MMMT) was diagnosed due to positive left inguinal lymph node metastasis. However, the retroperitoneal lymph node and intra-abdominal cavity did not show spread of the tumors, except those confined to the left ovary with adhesion to the cul-de-sac, and sole lymph node metastasis in a left inguinal lymph node. Although we could not prove that the left inguinal lymph node metastasis had been present for the three years that it was palpable without histologic confirmation, we believe that any enlarged inguinal lymph node might be the first hint of underlying malignancy in the pelvic area, lower extremities or perineal area. In cases of a poorly differentiated carcinoma of inguinal lymph nodes of unknown origin, the abdomen should be carefully evaluated.- - - - - - - - - - ranking = 1keywords = cavity (Clic here for more details about this article) |
2/6. Adenosquamous carcinoma of the mouth: a rare variant of squamous cell carcinoma.Adenosquamous carcinoma is a rare tumour in the oral cavity and is characterised histologically by carcinomatous change in surface epithelium, in association with adenocarcinoma affecting the ducts of minor salivary glands. Only a dozen cases have previously been reported in the oral cavity, but all have shown an aggressive course with 60% of patients dying of disease. We report three further cases and review the literature, which suggests that this lesion should be regarded as a high-grade variant of squamous cell carcinoma.- - - - - - - - - - ranking = 61.398144851865keywords = oral cavity, cavity (Clic here for more details about this article) |
3/6. Adenosquamous carcinoma of the tongue in a 22-year-old female: report of a case with immunohistochemistry.Adenosquamous carcinoma is a very rare tumor that is characterized pathologically by the simultaneous presence of distinct areas of adenocarcinoma and squamous cell carcinoma. Only 15 cases in the oral cavity are reported in the literature, most occurring in middle-aged and elderly males. pain is a commonly reported presenting symptom and may be related to the frequent presence of perineural invasion. Most cases have been treated surgically. However, early recurrence and death due to disease are common. We report an exceptional case occurring in a 22-year-old female. The tumor was associated with dysplasia of both minor salivary gland ductal epithelium and surface mucosal epithelium. Perineural invasion was also present. The patient was treated with combined surgery and radiotherapy and remained well for 9 months before developing locoregional recurrence and ultimately succumbing to the disease.- - - - - - - - - - ranking = 30.699072425933keywords = oral cavity, cavity (Clic here for more details about this article) |
4/6. Endometrial extension of adenosquamous carcinoma of the uterine cervix.Endometrial in situ extension of cervical cancer is extremely uncommon. Previous reports only present the cases of squamous cell carcinoma or related category. This report presented adenosquamous carcinoma of the uterine cervix that showed a paradoxical extension of each component in a 72-year-old patient. Main tumor in the cervix was revealed to be adenosquamous carcinoma. The glandular component extended to the vagina, while the squamous component grew into the entire uterine cavity and replaced the glandular epithelium. We presented the first case of adenosquamous carcinoma of the uterine cervix with vaginal and endometrial extension. Furthermore, the endometrium was replaced with squamous component, while the vagina was invaded by glandular component. The observed paradoxical extension of the present case was extremely rare.- - - - - - - - - - ranking = 1keywords = cavity (Clic here for more details about this article) |
5/6. Primary adenoid squamous cell carcinoma of the oral cavity.Adenoid squamous cell carcinoma (ASCC) is an uncommon but well-recognized variant of squamous cell carcinoma that was first described by Lever in 1947. ASCC has been reported to originate in the sun-exposed skin of the head and neck and in other sites. An additional case of ASCC is reported here. The patient was a 64-year-old Japanese woman who requested examination of a reddish lesion on the left floor of the mouth. The biopsy material was diagnosed as squamous cell carcinoma. Clinical examination showed a well-circumscribed, 20 x 10 mm-sized lesion, which was categorized as cT2cN0cm 0. Tumor resection was therefore performed. Histologically, most parts of the lesion were conventional squamous cell carcinoma in situ, but the invasive part consisted of ASCC with gland-like or reticular appearance. The latter part was negative for mucin staining. Immunohistochemically, this lesion was positive for pancytokeratin, high-molecular-weight keratin, cytokeratin (CK) 7/8, CK19, E-cadherin and p53, but negative for vimentin, CK20, and S-100 protein. The Ki-67 labeling index was 50.3% in the ASCC part and 34.5% in the carcinoma in situ part. These findings and a review of the literature indicate that a gland-like feature of ASCC is associated with the loss of cell adhesion in the center of the cancer nests, and it can be confirmed simply by mucin staining to be neither an adenosquamous carcinoma nor ductal involvement of conventional squamous cell carcinoma.- - - - - - - - - - ranking = 122.79628970373keywords = oral cavity, cavity (Clic here for more details about this article) |
6/6. Adenosquamous carcinoma. A rare neoplasm with an aggressive course.We report a case of adenosquamous carcinoma that arose in the maxillary alveolus of a 61-year-old woman, metastasized rapidly to submandibular and deep cervical lymph nodes, and caused death in spite of surgery and radiotherapy. Our case highlights the aggressive behavior associated with this tumor when it occurs in the oral cavity and at most other body sites. In addition, the oral adenosquamous carcinoma may not be as rare as the small number of reported cases might suggest because the adenocarcinoma component may form a very small proportion of the tumor as in our case, and the histopathologic criteria for diagnosis are not clearly established. Thus some cases of adenosquamous carcinoma may not be recognized as such. This underlines the important role of the histopathologist in the diagnosis of oral cancer by the recognition of specific subtypes of cancer and their associated prognostic significance.- - - - - - - - - - ranking = 30.699072425933keywords = oral cavity, cavity (Clic here for more details about this article) |