1/48. Primary leiomyosarcoma of the mandible in a 7-year-old girl: report of a case and review of the literature.leiomyosarcoma is a malignant neoplasm of smooth muscle origin that manifests itself uncommonly in the oral cavity because of the paucity of smooth muscle in that location. To the best of our knowledge, only 10 cases of leiomyosarcoma primary to the jawbones have been reported in the English language literature. We report the first pediatric case of leiomyosarcoma arising from the mandible. facial asymmetry and swelling were accompanied by a rapidly growing exophytic soft tissue mass that caused buccal displacement of the mandibular left permanent first molar. The lesion, observed radiographically as an extensive ill-defined area of osteolytic alveolar destruction, perforated the lingual cortex, displaced the inferior alveolar nerve canal inferiorly, and produced a "floating-in-air" appearance of the first molar. Diagnosis of leiomyosarcoma was made after initial incisional biopsy of the lesion. A 5-cm segmental mandibulectomy and supraomohyoid neck dissection were followed by reconstruction with a dynamic mandibular reconstruction plate and placement of a multidimensional mandibular distraction device in a transport rectangle of bone to promote bifocal distraction osteogenesis. Forty millimeters of distraction (the technical limit of the device) were performed; this was followed by terminal iliac crest bone grafting. Seventeen months after the definitive surgical procedure, the patient remains free of disease.- - - - - - - - - - ranking = 1keywords = oral cavity, cavity (Clic here for more details about this article) |
2/48. Oral leiomyosarcoma in childhood. Report of a case with fine needle aspiration cytology.BACKGROUND: Leiomyosarcomas are rare tumors in the pediatric age group, and occurrence of this neoplasm in the oral cavity is exceedingly rare. This article highlights the fine needle aspiration (FNA) cytology diagnosis of a case of recurrent oral leiomyosarcoma in childhood. CASE: An 11-year-old male noticed a swelling in the oral cavity near the left lower jaw. It was excised and diagnosed as leiomyosarcoma on histopathology. Four months later the patient presented with a progressive swelling in the oral cavity that extended to the lower jaw. The recurrent swelling was subjected to FNA, and its cytologic features were consistent with leiomyosarcoma. There was a very good initial response to chemotherapy and radiation therapy. However, because of noncompliance with advice for further therapy, the patient had a second local recurrence and dissemination of the disease to the skeletal system, abdomen and thorax. FNA cytology diagnosis of the second locally recurrent lesion and abdominal mass were consistent with leiomyosarcoma. Immunocytochemical staining revealed a positive reaction in the cytoplasm of tumor cells for vimentin and desmin in the FNA smear and paraffin section, respectively. CONCLUSION: Fine needle aspiration cytology is a useful technique for detection of recurrence and metastasis during follow-up of childhood oral leiomyosarcoma.- - - - - - - - - - ranking = 3keywords = oral cavity, cavity (Clic here for more details about this article) |
3/48. Rare presentation of small bowel leiomyosarcoma with liver metastases.Intraabdominal sarcomas are rare tumours usually diagnosed at an advanced stage. These lesions at presentation are bulky and symptoms are often related to pressure effects on adjacent organs. This case report describes a rare presentation of a small bowel leiomyosarcoma whose initial presentation was free haemorrhage into the abdominal cavity and concomitant liver metastases. This case report also demonstrates that, even with such a rare presentation, an aggressive surgical approach is indicated in this type of tumour and helps a patient with advanced disease to live a few disease-free months with a good quality of life.- - - - - - - - - - ranking = 0.090905242224664keywords = cavity (Clic here for more details about this article) |
4/48. Collision tumour in the pelvic cavity: rectal leiomyosarcoma and prostate adenocarcinoma.We report a rare and, to our knowledge, as yet undescribed type of collision tumour - rectal leiomyosarcoma and prostate adenocarcinoma. Our study also provides the first data on molecular alterations [polymerase chain reaction/loss of heterozygosity (LOH) analysis] of the APC, NF-1, DCC, p53, nm23-H1 and BRCA-1 genes in the two components of the collision tumour. None of the genes examined in this study expressed LOH in the prostate carcinoma component of the collision tumour. By contrast, in the leiomyosarcoma component, LOH was found at the DCC and p53 genes, proving that these two tumours did not arise from the same stem cell but represent two different neoplastic growths.- - - - - - - - - - ranking = 0.36362096889866keywords = cavity (Clic here for more details about this article) |
5/48. Leiomyosarcomas of the oral cavity: an unusual topographic subset easily mistaken for nonmesenchymal tumours.AIMS: Oral leiomyosarcoma is rare and poorly documented. We aimed to characterize these lesions clinicopathologically in order to facilitate their distinction from other spindle cell neoplasms in the oral cavity. methods AND RESULTS: Ten cases of oral leiomyosarcoma were retrieved and studied histologically and immunohistochemically. Clinical data were obtained from referring pathologists and prior literature concerning 46 comparable cases was reviewed. Nine out of 10 cases occurred in adults; 50% arose in the jaws and four showed bone involvement. Histological appearances were similar to leiomyosarcomas elsewhere. In addition to myogenic markers, two cases were also keratin-positive. Four patients developed local recurrence or metastatic disease and three died of tumour (median follow-up 37 months). CONCLUSIONS: leiomyosarcoma is under-recognized in the mouth, often being mistaken for a spindle-celled epithelial neoplasm. Aside from an unusual but infrequent tendency to spread to lymph nodes and a location-specific differential diagnosis, its clinicopathological features are comparable to leiomyosarcomas at other locations.- - - - - - - - - - ranking = 5keywords = oral cavity, cavity (Clic here for more details about this article) |
6/48. Uterine myxoid leiomyosarcoma.BACKGROUND: Uterine myxoid leiomyosarcoma is rare, has a poor prognosis, and must be distinguished from a uterine myoma with myxomatous change. CASE: A 56-year-old woman with a history of epigastric pain and generalized abdominal swelling had a peritoneal cavity filled with tumor that originated from the posterior uterine wall. Chemotherapy and two operations for recurrence could not prevent fatal metastases to the vascular system. Histopathology showed a typical myxoid leiomyosarcoma. CONCLUSION: Although the patient's prognosis was poor, no mitoses were observed, and the nuclear abnormalities were not sufficient to diagnose the tumor as malignant at the initial surgery. Whenever a uterine myoma with myxomatous change is found, the patient should be monitored carefully.- - - - - - - - - - ranking = 0.090905242224664keywords = cavity (Clic here for more details about this article) |
7/48. Paraneoplastic pemphigus caused by an epithelioid leiomyosarcoma and associated with fatal respiratory failure.A patient is described who initially presented with pemphigus vulgaris, limited to the oral cavity, and weight loss. Although the various laboratory studies pointed to the diagnosis of paraneoplastic pemphigus (PNP), the underlying neoplasm was not detected until 6 months later, when the patient developed shortness of breath and routine physical examination on admission revealed an abdominal mass, which eventually was proven to be an epithelioid leiomyosarcoma. In spite of radical excision of the tumour and intensive treatment of the dyspnoea, the patient died of respiratory failure 19 months after the PNP had been diagnosed. early diagnosis of PNP is stressed to possibly prevent fatal pulmonary involvement.- - - - - - - - - - ranking = 1keywords = oral cavity, cavity (Clic here for more details about this article) |
8/48. Concomitant well-differentiated adenocarcinoma and leiomyosarcoma of the uterus.We describe a case of a concomitant well-differentiated endometrial endometrioid adenocarcinoma and leiomyosarcoma of the uterus in a 66-year-old woman who presented with a 6-month history of vaginal bleeding. The patient underwent total hysterectomy for endometrial carcinoma diagnosed by endometrial biopsy. Gross examination of the specimen revealed an endometrial mass bulging into the endometrial cavity and an underlying well-circumscribed nodule separated from the endometrial mass by a myometrial band. Frozen section performed at the time of the total hysterectomy rendered a diagnosis of malignant mixed-mullerian tumor. Histologic examination of the permanent sections revealed well-differentiated endometrial endometrioid adenocarcinoma clearly separated from a high-grade leiomyosarcoma. Differential diagnosis included malignant mixed-mullerian tumor. However, no admixture of carcinomatous and sarcomatous elements was present. There were no heterologous elements. To the best of our knowledge, no similar case has been described in the English literature.- - - - - - - - - - ranking = 0.090905242224664keywords = cavity (Clic here for more details about this article) |
9/48. A case of a primary ovarian leiomyosarcoma.A primary ovarian leiomyosarcoma is extremely rare. Moreover, there is no established treatment modality other than surgery, and the prognosis is extremely poor. We report a case of a primary ovarian leiomyosarcoma. The patient was a gravida 4, para 2, 73-year-old female. She first presented with chief complaints of constipation and a pelvic mass. A physical examination revealed a solid tumor in the pelvic cavity. Which was about the size of an infant's head and had an irregular shape. The patient was suspected of having a subserosal myoma of the uterus or an ovarian tumor, and she was subjected to a laparotomy. A solid tumor about the size of an infant's head was found in the left uterine adnexa, and an intraoperative rapid pathological diagnosis of an ovarian leiomyosarcoma was made. A total abdominal hysterectomy, a bilateral salpingo-oophorectomy, a pelvic lymphadenectomy, and an omentectomy were then performed. The final pathological diagnosis confirmed a left primary ovarian leiomyosarcoma. After a series of discussions with the patient's family about her therapeutic plan, we decided to let the patient be followed-up without adjuvant therapy. Forty-two months after the surgery, the patient accumulated massive amounts of pleural effusion and ascites, with extensive organ metastasis. She received terminal care and soon died.- - - - - - - - - - ranking = 0.090905242224664keywords = cavity (Clic here for more details about this article) |
10/48. Synchronous oral leiomyosarcoma and squamous cell carcinoma.An unusual case of synchronous squamous cell carcinoma and leiomyosarcoma of the oral cavity is reported in a patient without any identified environmental risk or predisposing factors. The invasive squamous cell carcinoma involved the tongue, whereas the leiomyosarcoma was located in the soft palate. No immunostaining was found for human papillomavirus or Epstein-Barr virus, and in situ hybridization showed negativity for human papillomavirus dna within the tumor cells. Alterations of bcl -2, c-erb -b2 and Rb oncoproteins were not found immunohistochemically. Overexpression of p53 was detected by immunohistochemistry in both tumors, but p53 gene mutations were not found by polymerase chain reaction. Neither loss of heterozygosity of p53 nor microsatellite instability was detected in this patient. The smooth muscle nature of the leiomyosarcoma was confirmed by immunohistochemical methods. To our knowledge, synchronous smooth muscle and epithelial oral tumors have not previously been reported.- - - - - - - - - - ranking = 1keywords = oral cavity, cavity (Clic here for more details about this article) |
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