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Solid Mass (solid + mass)
Selected AbstractsCollecting duct carcinoma with long survival treated by partial nephrectomyINTERNATIONAL JOURNAL OF UROLOGY, Issue 7 2001Hiroaki Matsumoto Abstract A case is reported of collecting duct carcinoma of the left kidney treated with partial nephrectomy. A 57-year-old woman presented for evaluation of the left renal mass, which was detected by screening ultrasonography. A computed tomography scan and magnetic resonance imaging showed a solid mass at the upper pole of the left kidney. The renal tumor biopsy revealed a low-grade renal cell carcinoma or a tubulopapillary adenoma. Subsequently, left partial nephrectomy was performed. Microscopically, the tumor showed tubulopapillary proliferation with a fibrous capsule. Histochemically, the tumor cells reacted with lectins or antibodies against the collecting duct. Twenty-four months after partial nephrectomy, the patient is alive and has no distant metastatic lesions. We review the literature on collecting duct carcinoma, in addition to the case of partial nephrectomy. [source] Sonographic diagnosis of fibromatosisJOURNAL OF CLINICAL ULTRASOUND, Issue 6 2008Yuexiang Wang MD Abstract Purpose. To investigate the value of sonography in the diagnosis of fibromatosis. Method. We retrospectively reviewed the sonographic findings, pathologic results, and other medical records of 42 patients with pathologically proven fibromatosis. The tumor's size and location were recorded. Echogenicity, margins, vascularity, and relationship with the adjacent tissue were analyzed. Results. A total of 42 patients with 44 lesions were included in the study. In 21 patients, the tumor was a primary tumor. In 7 of these patients, a preoperative diagnosis of fibromatosis was obtained via sonographically guided biopsy or surgical biopsy. In another 21 patients, the tumor was a recurrence (including 1 case of malignant transformation). Well-defined and regular margins were demonstrated in 26 lesions (59%), whereas poorly defined and irregular borders were seen in the other 18 lesions. On Doppler imaging, vascularity was absent in 66% (29/44) lesions, moderate in 23% (10/44), and marked in 11% (5/44). Infiltration into the adjacent skeletal muscles, cortical bone, or encasement vessels, nerves, or tendons was found in 21 (48%) lesions. Conclusion. In patients with fibromatosis, sonography demonstrates a nonspecific hypoechoic solid mass and can guide the percutaneous needle biopsy. © 2008 Wiley Periodicals, Inc. J Clin Ultrasound, 2008 [source] A case of cutaneous myoepithelial carcinomaJOURNAL OF CUTANEOUS PATHOLOGY, Issue 8 2007Jin Tanahashi Background:, Cutaneous myoepithelioma, both benign and malignant, is a rare neoplasm composed of neoplastic myoepithelial cells showing diverse histopathological features, and criteria for discriminating benign or malignant have not been fully clarified. Patient:, We present a case of cutaneous myoepithelial carcinoma in a 62-year-old woman presenting a solid mass in the right back. Results:, Resected tumor was located in the whole dermis and subcutis. Histopathologically, two different growth patterns were noted: a small-nested or trabecular pattern in the superficial part and a large nodular pattern with extensive central necrosis in the deep part. Tumor cells were all epithelioid, although plasmacytoid and glycogen-rich clear cells were also observed within the large nodules of the deep part. Immunohistochemically, the cells were positive for both epithelial and myogenic markers, suggesting myoepithelial origin. Lymphatic invasion and lymph node metastasis were evident despite inconspicuous atypia and low mitotic rate. Conclusion:, The final diagnosis was cutaneous myoepithelial carcinoma. At present, it seems to be difficult to predict the behavior of myoepithelioma of the skin and soft tissue, although atypia and high mitotic rate are reported to be associated with local recurrence and metastasis. [source] Retroperitoneal schwannoma bearing at the right vaginal wallJOURNAL OF OBSTETRICS AND GYNAECOLOGY RESEARCH (ELECTRONIC), Issue 6 2004Takafumi Inoue Abstract Benign schwannoma commonly arises from schwann cells of the neural sheath. We report a rare case of retroperitoneal schwannoma bearing at the vaginal wall. The tumor was a 7 × 5 × 4-cm solid mass revealed using several image techniques and diagnosed to be a retroperitoneal tumor preoperatively. The tumor was tightly attached to the vaginal submucosal tissue, so complete surgical resection was difficult. However, an almost complete resection was carried out macroscopically using laparotomy. Histologic and immunohistochemical studies confirmed the diagnosis. The patient has been followed for 18 months after the operation, but there is no evidence of recurrent tumor. [source] Benign myoepithelioma of the breast: Origin and developmentPATHOLOGY INTERNATIONAL, Issue 6 2009Hajime Hikino A case of benign myoepithelioma of the breast in a 55-year-old woman is described. The tumor was a well-circumscribed solid mass, measuring 13 × 12 mm. Histopathology indicated that the tumor was composed of entirely myoepithelial cells, which was confirmed by immunoreactivity to calponin and S-100. There was no ductal differentiation in the tumor, and staining for pan-cytokeratin and epithelial membrane antigen was weak and negative, respectively. Although the biological behavior of the tumor remains to be ascertained, the tumor was considered to be myoepithelioma with benign features due to mild nuclear pleomorphism, sparse mitotic figures, low Ki-67 labeling index and low S-phase fraction. Diagnostic confusion between benign myoepithelioma and other myoepithelial-rich cell tumors is possible. Considering the classification of myoepithelial tumor in the salivary glands, benign myoepithelioma of the breast may possess a different development process from adenomyoepithelioma. [source] Large cell calcifying Sertoli cell tumor of the testis: Comparative immunohistochemical study with Leydig cell tumorPATHOLOGY INTERNATIONAL, Issue 6 2005Katsuaki Sato Large cell calcifying Sertoli cell tumor is a rare type of testicular, tumor., Reported, herein, is, a, Japanese, patient with this tumor not associated with Carney's complex. An 11-year-old boy was admitted to hospital because of left testicular enlargement, and radical orchiectomy was performed. Macroscopically, the tumor was well circumscribed and had a maximum diameter of approximately 2 cm. The cut surface showed a yellow-white solid mass. Histologically, the tumor was composed of large neoplastic cells with abundant eosinophilic cytoplasm with a tubular, trabecular, and solid arrangement and loose myxoid stroma with irregularly shaped calcification. Immunohistochemically, the tumor cells were positive for vimentin, S-100 protein, calretinin, inhibin-,, melan-A, and CD10, and type IV collagen and laminin were observed in the extracellular matrix around the tumor cells. The distributions of melan-A, CD10, and mitochondria were characteristically patchy; in contrast, they were diffusely distributed in the cytoplasm in a control case of Leydig cell tumor. The differences in immunostaining patterns for melan-A, CD10, and mitochondria as well as positivity for S-100 protein-, might be useful diagnostic hallmarks of large cell calcifying Sertoli cell tumor for discrimination from Leydig cell tumor. [source] A Multimodality Approach to the Diagnosis of Breast Hamartomas with Atypical Mammographic AppearanceTHE BREAST JOURNAL, Issue 1 2001Juan D. Berná MD Abstract: The ultrasonographic appearance of breast hamartomas (BHs) is described and its diagnostic utility is discussed in this study of 27 women with mammographic findings both typical and atypical of BH. The role of computed tomography (CT) in the diagnosis of BH of atypical mammographic appearance is also analyzed. These 27 cases of BH were detected in women submitted to mammographic screening. Ages ranged from 45 to 65 years (mean age 52.6 years). In all cases physical and ultrasonographic examinations were carried out. CT studies were carried out in seven cases. Core biopsy was performed in 18 cases of lesions with a mammographic appearance atypical of BH. Lesions were palpable in 9 cases and nonpalpable in 18. Mammographic appearance was characteristic in nine cases. In 19 cases a hypoechoic solid mass with hyperechoic lines and/or bands was seen. This ultrasonographic image is suspicious of BH. Finally, both CT and core biopsy findings were of great help in the diagnosis of BH in the cases where mammographic and ultrasonographic studies were inconclusive. We consider that a combination of mammography, ultrasonography, CT, and core biopsy is fundamental for the successful diagnosis of breast hamartomas not seen in typical form in mammograms. [source] Polyorchidism: a three-case report and review of the literatureANDROLOGIA, Issue 1 2010M. Savas Summary The presence of more than two testes confirmed by histology is called polyorchidism. Polyorchidism is an extremely rare congenital anomaly with a few more than 100 cases reported in the literature. The majority of reported cases are asymptomatic patients, others present with cryptorchidism, hydrocele, varicocele, epididymitis, infertility, testicular malignancy and testicular torsion. Over a 2-year period, we encountered three patients who were found to have polyorchidism; two men presented with cryptorchidism and one with chronic scrotal pain. Physical examination of the first and the third patient revealed normal testes in the scrotal sac, the other scrotal sac was empty and small solid mass (atrophic left testes) was palpated in the inguinal canal. Ultrasonographic examination of the scrotum and inguinal region confirmed the findings of the physical examination. Ultrasonographic examination of the second patient revealed supernumerary testes within the scrotum. Orchiectomy was made on the first and third patients' supernumerary testes and ipsilateral inguinal high ligation was applied for herniorrhaphy. A conservative approach was preferred for the second patient, maybe preserving a potentially functional supernumerary testis to improve the capacity for spermatogenesis. The risk of malignancy justifies the removal of an atrophic and ectopic testis in polyorchidism. However, it would appear safe to preserve a viable intrascrotal supernumerary testis found incidentally at surgery, provided that the patient is followed-up in the long term. [source] | ||||||||||