1/12. Megapenis associated to corpus spongiosum agenesis with scrotal and pelvic hemangiomas.An exceptional case of megapenis associated with corpus spongiosum agenesis and multiple hemangiomas of the scrotum, perineum and pelvis is reported. This is the first case in which three exceptional malformations are associated.- - - - - - - - - - ranking = 1keywords = pelvis (Clic here for more details about this article) |
2/12. Aggressive angiomyxoma of the scrotum.Aggressive angiomyxoma is a rare and nonmetastasizing soft tissue tumor of the pelvis and perineum and occurs almost exclusively in adult females. It infiltrates locally and has a high risk of local recurrence. Recommended treatment of the symptomatic patient is wide excision with tumor-free margins and close postoperative monitoring. Herein, a case of aggressive angiomyxoma in an adult male is described, which arose in the scrotum over 12 months. The tumor showed an intermediate signal on T1-weighted MRI images. Contrast-enhanced T1-weighted images showed good enhancement. Wide excision of the tumor was performed. The surgical specimen measured 7 x 5 x 5 cm in size and weighed 80 g. The tumor's surface was smooth and had a gelatinous cut surface. Grossly, it was encapsulated with a pleura-like membrane and had a finger-like projection. Microscopically, sections showed many walled vessels of various sizes, collagen fibrils, a loose myxoid background. and spindle stroma cells. MRI and CT showed the angiomatous and myxomatous nature of the tumor wall. To the authors' knowledge, this is the first report to describe MRI findings in scrotal angiomyxoma.- - - - - - - - - - ranking = 1keywords = pelvis (Clic here for more details about this article) |
3/12. Aggressive angiomyxoma of childhood: two unusual cases developed in the scrotum.Aggressive angiomyxoma (AAM) is a locally invasive soft tissue tumor and is predominantly found in the female pelvis and perineum. The incidence of AAM in adult and adolescent males is low, and is very rare in male children. However, two cases of AAM occurred in the scrotum of 8-year-old and 1-year-old boys. Grossly, both tumors were ill-delineated nodules showing myxoid homogenous and lobulated cut surface. The scrotum of case 2 was replaced by the exuberant mass, making a polypoid appearance. On microscopic examination, both had hypocellular myxoid stroma, spindle and stellate stromal cells, and blood vessels of various calibers. Both lesions typically showed infiltrating borders and penetrated into skin adnexa and Dartos' muscle fibers. AAM should be considered in the differential diagnosis of a scrotal mass found in childhood.- - - - - - - - - - ranking = 1keywords = pelvis (Clic here for more details about this article) |
4/12. Aggressive angiomyxoma. A report of four cases occurring in men.Aggressive angiomyxoma is a distinctive, locally aggressive but nonmetastasizing soft tissue tumor of the pelvic soft tissues and perineum. This rare tumor occurs almost exclusively in adult women. We report four cases occurring in adult men, one each located in the scrotum, inguinal region, spermatic cord, and pelvis. The tumors were infiltrative, and were composed of fibromyxoid matrix sparsely populated by bland-looking spindled and stellate cells with delicate cytoplasmic processes. There were haphazardly scattered small and large blood vessels, some of which exhibited hypertrophy or hyalinization of the wall. Immunohistochemically, the stromal cells stained consistently for vimentin and variably for muscle-specific actin, but not alpha-smooth muscle actin, desmin, and S-100 protein. None of the four tumors recurred in follow-up times from 11 months to 6 years, although two previously reported cases in men recurred. This uncommon tumor occurring around the genital region in men merits wider recognition because of its potential for recurrence. It should be distinguished from benign tumors with low risk of recurrence on one hand, and from malignant myxoid tumors with metastatic potential on the other.- - - - - - - - - - ranking = 1keywords = pelvis (Clic here for more details about this article) |
5/12. leiomyoma of the seminal vesicles.We report the case of a 37-year-old man suffering from dysuria, frequency, acute renal failure followed by bowel distress with rectal tenesmus. PSA was 6.19 ng/ml. CT of abdomen and pelvis revealed a probable prostatic-related pelvis mass. TRUS was not carried out due to intolerance. The patient underwent laparotomy through a lower midline incision that confirmed a firm, even if not involving the adjacent organs, considerable pelvic mass adhering to the left seminal vesicle and involving the right one. Therefore the right seminal vesicle and the mass originating from it were removed. Three months follow-up showed a clinically recovered patient, free of voiding and intestinal symptoms, back to normal working activity.- - - - - - - - - - ranking = 2keywords = pelvis (Clic here for more details about this article) |
6/12. Aggressive angiomyxoma in a child with chronic renal failure.Aggressive angiomyxoma (AAM) is a rare and nonmetastasizing soft-tissue tumor predominantly found in the female pelvis and perineum. It has a high risk of local recurrence. We report the unusual case of a 15-year-old boy with an AAM presenting as a slowly enlarging scrotal mass. The patient had had chronic renal failure since 1997 and had needed hemodialysis for the previous 11 months. He presented with a 12-month history of a nontender soft mass in the right scrotum. Ultrasound examination revealed a solid mass in the scrotum. After surgical resection, pathological analysis disclosed spindle-shaped neoplastic cells widely separated by a myxoid stroma rich in collagen fibers and prominent irregularly shaped blood vessels; the histological examination confirmed an AAM.- - - - - - - - - - ranking = 1keywords = pelvis (Clic here for more details about this article) |
7/12. Aggressive angiomyxoma of the epididymis.Aggressive angiomyxoma is a rare locally invasive non-metastasizing soft tissue neoplasm that is most commonly located in the female pelvis and perineum. We report a case of aggressive angiomyxoma arising from the epididymis of a young male, which was treated by radical orchiectomy.- - - - - - - - - - ranking = 1keywords = pelvis (Clic here for more details about this article) |
8/12. Angiomyofibroblastoma-like tumors (cellular angiofibroma).Angiomyofibroblastoma-like tumor (cellular angiofibroma) is a rare, circumscribed, slow-growing mesenchymal tumor that occurs predominantly in the vulva, perineum, and pelvis of women. We report two cases of this tumor in men arising as paratesticular masses of the scrotum, summarize the history of this tumor, and discuss why efforts should be made to differentiate it from aggressive angiomyxoma. Recommended treatment is complete surgical excision with long-term follow up exams, as local recurrence may occur many years after resection of the lesion.- - - - - - - - - - ranking = 1keywords = pelvis (Clic here for more details about this article) |
9/12. Cystic epithelial-stromal tumor of the seminal vesicle.A cystic tumor composed of atypical glands in a cellular stroma arose in the pelvis of a 49-year-old man. Two years later an identical tumor was again excised from the pelvis. Morphologic, immunohistochemical and ultrastructural studies indicate that this neoplasm arose in the seminal vesicle, possibly from a seminal vesicle cyst. The tumor did not involve the prostate gland, and immunohistochemical stains for prostate-specific antigen and prostatic acid phosphatase were negative. Ultrastructural study showed that both the glandular and mesenchymal components of the tumor recapitulated features of normal seminal vesicle, further establishing origin from this site. This tumor resembles the rare cystadenoma of the seminal vesicle, yet the cytologic atypia suggests low grade malignant potential. Following the second excision, the patient has had a disease-free interval of 18 months. Long term follow-up and recognition of additional cases is necessary to define the biologic potential of this unusual tumor.- - - - - - - - - - ranking = 2keywords = pelvis (Clic here for more details about this article) |
10/12. Computed tomography of the pediatric pelvis.Computed tomography is a useful imaging modality in infants and children for evaluating pelvic lesions suggested by conventional imaging procedures. Computed tomography can provide anatomic information about abnormalities of the viscera as well as the musculoskeletal structures. Characterization of a lesion as well as determination of its extent is possible by computed tomography. Computed tomography is especially valuable in visualizing the presacral space, in the follow-up of patients with malignant neoplasms and in localizing impalpable testes.- - - - - - - - - - ranking = 4keywords = pelvis (Clic here for more details about this article) |
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