1/29. Peritoneal sarcoidosis: case report and review of the literature.OBJECTIVES: This study was performed to report a patient with peritoneal sarcoidosis and review the literature for similar cases. methods: We described the clinical presentation, course, and outcome of the patient, and reviewed the medical literature from 1966 till 1997 using medline and the key words sarcoidosis, scar, and peritoneum. RESULTS: Our patient presented with a rapidly growing tumor-like mass at the site of an old appendectomy scar. laparoscopy showed a large peritoneal mass and multiple small peritoneal nodules that were found to be noncaseating granulomas by pathology. The medline search uncovered only 16 cases of peritoneal sarcoidosis, most of which presented with ascites. CONCLUSION: This case illustrates the need to consider sarcoidosis, in addition to infections and neoplasms, in the differential diagnosis of peritoneal nodules and exudative ascites.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
2/29. Malignant melanoma in a skin graft: burn scar neoplasm or a transferred melanoma?Malignant melanomas (MM) arising in burn scars are rare with 16 cases previously reported. Malignant melanomas arising on skin grafts are even more rare with only two cases reported. We present the case of MM arising on a burned area that had been previously grafted with a split thickness skin graft. A 19-year-old patient sustained 20% burns in a road traffic accident. The burned areas were debrided and skin grafted. Six months later, the patient developed MM on the left calf (an area that was burned and grafted). The tumour was excised with wide margins. Six months following the excision of the MM, the patient started to develop multiple dysplastic naevi in the skin grafted burned areas. In the present case, the main question to be answered is whether the MM arose from the donor or the recipient site of the split thickness skin graft. After thorough discussion of the two options and reviewing the literature, the authors believe that the MM and the atypical naevi were transferred to the recipient site with the skin graft. Therefore, it is suggested that in the process of harvesting skin grafts, any pre-existing naevi should be avoided or removed, and if this is not feasible, should be recorded in detail in the operation notes. Also, patients at discharge should be advised that any change in the appearance of the grafts or any new lesions in the engrafted areas should be reported to their physicians.- - - - - - - - - - ranking = 4keywords = neoplasm (Clic here for more details about this article) |
3/29. Marjolin's ulcer of the scalp: report of 5 cases and review of the literature.The formation of neoplastic changes in the scar tissue of chronically ulcerating wounds is a well-known process. This condition is most commonly seen after the postburn scars, but it may be seen after many kinds of scars. The term "Marjolin's ulcer" is used to describe this type of carcinoma. Although many different cell types can be seen in these lesions, the most commonly seen is squamous cell carcinoma. Squamous cell carcinomas resulting from the Marjolin's ulcer have a much greater tendency to metastasize than squamous cell carcinomas resulting from the other causes. confusion continues about the precise pathophysiology of this lesion and the clinical behavior of this neoplasm, and the mortality and morbidity rates are also conflicting. As would be expected, there is a wide variety of suggested treatment protocols for this disease. This article, through case reports and review of the literature, offers criteria for the treatment of the Marjolin's ulcers that arise on the scalp, which is an uncommon site.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
4/29. Scar formation in the cardiac conduction system of a patient with Takayasu's arteritis.An autopsied case of Takayasu's arteritis associated with complete atrioventricular (AV) block is described for the first time. The findings of scar formation and diffuse infiltration of lymphocytes into the cardiac conduction system, particularly the AV node, were similar to those in patients with connective tissue diseases or congenital complete heart block. The degree of AV block progressed with aggravation of the disease. These findings suggest that complete AV block may have been induced by acquired autoimmunity involving the cardiac conduction system.- - - - - - - - - - ranking = 0.036588160556197keywords = heart (Clic here for more details about this article) |
5/29. Clear cell carcinoma arising in a cesarean section scar. Report of a case with fine needle aspiration cytology.BACKGROUND: Clear cell carcinoma arising in a cesarean section scar is an extremely rare disease. To the best of our knowledge, there is no published report on the aspiration cytology. CASE: A 56-year-old woman presented with a mass in a cesarean section scar. Initially an abdominal desmoid was considered, but the features of fine needle aspiration (FNA) cytology suggested an adenocarcinoma. The resected tumor was histologically composed of clear cell carcinoma showing cystic, solid and papillary patterns. CONCLUSION: FNA cytology of masses arising in a surgical scar can be a useful tool in obtaining an accurate pathologic diagnosis of a malignant neoplasm.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
6/29. Cutaneous neoplasm arising from total knee replacement incision in the early postoperative period.Potential wound healing complications after total knee arthroplasty includes infection, skin edge necrosis, and dehiscence. We report another type of wound problem: the rapid development of a skin malignancy (or premalignancy) along an immature scar after knee arthroplasty.- - - - - - - - - - ranking = 4keywords = neoplasm (Clic here for more details about this article) |
7/29. Subcutaneous pigmented villonodular synovitis caused by portal contamination during knee arthroscopy and open synovectomy.The etiology of pigmented villonodular synovitis (PVNS) is not clear. Researchers have suggested that localized nodular synovitis is an inflammatory process, but more recent studies tend to describe the lesion as benign synovial neoplasm with the potential of local recurrence. Although the theoretical risk of secondarily seeding the remainder of the knee is evident, this is the first report of a subcutaneous PVNS caused by portal contamination during knee arthroscopy and open synovectomy. It supports a neoplastic origin of this lesion.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
8/29. Piloleiomyoma mistaken for postacne scarring.Piloleiomyomas are benign, smooth muscle neoplasms arising from the arrectores pilorum muscles in the skin. They differ in size and number and are often cold and painful or sensitive to touch. Piloleiomyomas, though not exceedingly rare, may not be expected in the differential diagnosis for multiple skin nodules. We present a case of a piloleiomyoma that was initially diagnosed as postacne scarring.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
9/29. Pleural mesothelioma with cutaneous extension to chest wall scars.BACKGROUND: Cutaneous mesothelioma is rare but may occur following local surgical procedures for visceral mesothelioma or as a metastasis. methods: A patient with pleural mesothelioma, who developed papules within chest wall scars, 14 and 15 months after pleural biopsy and thoracentesis, respectively, is reported. RESULTS: Histopathology showed an epithelioid tumor forming tubulopapillary and glandular structures. The diagnosis of mesothelioma was confirmed with immunohistochemistry. Tumor cells stained characteristically for low-molecular-weight cytokeratins 5/6, calretinin, and vimentin and were negative for mucicarmine, carcinoembryonic antigen, thyroid transcription factor 1, prostate-specific antigen, gross cystic disease fluid protein, S-100, factor viii, and CD31. CONCLUSIONS: Histologically, mesothelioma may resemble a primary adnexal neoplasm, metastatic adenocarcinoma, or angiosarcoma. immunohistochemistry can clarify the diagnosis. Clinicians should be aware of the varied presentations of mesothelioma, as cutaneous presentations are becoming increasingly common.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
10/29. collagen-rich crystalloids in a scarred vascularized cornea.collagen-rich crystalloids, also referred to as collagenous crystalloids, are uncommon findings in benign salivary gland tumors with myoepithelial differentiation and in cutaneous neoplasms. Herein, we report the presence of collagen-rich crystalloids in the scarred, vascularized cornea of a 56-year-old woman. The patient underwent penetrating keratoplasty, and microscopic examination of hematoxylin-eosin-stained sections disclosed large aggregates of refractile material within the corneal stroma. The deposits were partially birefringent when viewed with polarized light and composed of radially arranged columns (long rectangles) with rounded to pointed tips. The deposits had tinctorial properties of collagen using Masson trichrome and the van Gieson method for collagen, and they stained with alcian blue, pH 2.5, and Verhoeff elastic stain. They did not stain with Gomori methenamine silver, Snook reticulin stain, or tyrosine using the Baker modification of the Millon reaction. This is the first report, to our knowledge, of collagen-rich crystalloids in the cornea. Their presence in the cornea indicates that these structures may occur in the absence of neoplasia.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
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