Carlo Toncini

Myxoid liposarcoma of the spermatic cord: US and MR imaging findings

We report a patient with myxoid liposarcoma of the spermatic cord in whom combined use of both ultrasound (US) and MRI helped to suggest the diagnosis. The lesion was solid at US and vascularized at color Doppler. T1‐weighted MRI did not show fat within it; on T2‐weighted images it had high signal intensity, with a cyst‐like appearance. It is known that fat‐poor myxoid liposarcomas with high water content may mimic a cystic lesion on non‐contrast‐enhanced MR; then, a combination of MRI findings, suggesting a cyst, and of US findings, showing the mass was actually solid and vascularized, allowed preoperatively the diagnosis of fat‐poor myxoid liposarcoma.

Multiple, Synchronous Lesions of Differing Histology Within the Same Testis: Ultrasonographic and Pathologic Correlations

OBJECTIVE To describe ultrasound (US) and pathologic findings in 11 patients with multiple, synchronous lesions of different histology within the same testis. MATERIALS AND METHODS We reviewed US and pathologic findings in 11 patients with multiple, synchronous lesions of different histology within the same testis. Lesions were classified as separate or adjacent one to another and attempt was made to predict tumor type on their US textures. Pathologic review assessed presence of normal tissue between adjacent lesions and of Germ Cell Neoplasia In Situ in surrounding parenchyma. Nine cases were from files specifically dedicated to testicular tumors and estimated prevalence was calculated. RESULTS Two nodules were seen in nine patients and 3 in remaining two. Nine had tumors of different histology; two had one malignancy and one focal benign lesion. Germ Cell Neoplasia In Situ was seen in 7/11 cases. In dedicated archives, these lesions had 1.83% prevalence. CONCLUSION Multiple focal lesions identified at imaging within the testis are not always of the same histology. This can be suspected in some cases basing on US texture. Recognition that lesions are multiple and an indication of their locations within the testis is the most important role of imaging and may help pathologists correctly sample the specimen to establish nature of each of them. Presence of multiple lesions is regarded as a contraindication to testicular sparing surgery. In two of our patients, one lesion was benign. Then, when the procedure is indicated all lesions have to be sampled and assessed by pathologists before deciding between conservative or radical technique.

Zinner Syndrome: A Diagnostic Challenge. The Aid of Morphology, Embryology, and Immunohistochemistry

We investigate a patient with right kidney agenesis. Imaging showed the presence of a cystic mass dislocating the bladder. The specimen showed three formations: a kidney remnant, a ureter with blind-ending branch, and a cyst, from which departed another tubular structure, considered the deferential duct. The specimen was sampled. The supposed kidney was formed by cystic structures. Examination of the tubular structures disclosed smooth muscle fibers with no lumen, whereas the cyst was surrounded by fibrous and hemorrhagic walls. Collaboration among specialists allowed the diagnosis of Zinner syndrome, a congenital malformation due to an abnormal development of the Wolffian duct.

Leiomyoma of the deferens: a curious and extremely rare disease

Introduction Leiomyomas are rare benign tumors that can occur in the male urinary tract. We present a unique case of leiomyoma of the vas deferens. Case Description We present the clinical case of a 69-year-old patient with a suspected bulk close to the right epididymis, which turned out to be a leiomyoma of the vas deferens. To our knowledge, it is the fourth case in literature. Conclusions A proper identification and the knowledge of this pathology, even if it is a very unusual event, is necessary to avoid a surgical over treatment and preserve the testicle, by removing only the tumor.

Verruciform xanthoma of the penis: A rare benign lesion that simulates carcinoma

Verruciform xanthoma is a rare and benign condition predominantly affecting the oral cavity, but also skin and female anogenital mucosa. It can be flat, papular-warty or crateriform-cystic. Furthermore it can simulate HPV viral lesion such as condyloma and malignant neoplasia such as verrucous squamous cell carcinoma. An accurate diagnosis is important to avoid overtreatment, considering it is a benign lesion that does not require any radical treatment. We present an extremely rare case of a 64 year-old man with a small, slighty raised, gray reddish-dotted lesion on the left portion of the ventral side of his glans.

Coexistence of different histotypes of renal carcinoma:our experience and literature review

The coexistence of multiple, synchronous primary tumors of different histology within the same kidney is a rare condition. We report herein a series of five patients with two tumors of different histology involving synchronously the same kidney. MATERIALS AND METHODS. We reviewed the pathology reports of a series of 381 patients who underwent surgery for primary renal tumors at our institution from 2000 to 2007. In the files of all patients with synchronous tumors of different histology, special attention was given to the results of imaging studies. RESULTS. Five out of 381 patients (1.37%) had coexistence of two primary tumors of different histology within the same kidney. Four patients had ultrasonography as the first imaging procedure, one patient had ultrasonography as the second imaging procedure; all had preoperative CT of the abdomen. Both lesions were detected by preoperative CT in 4/5 of the cases; in the remaining one, the smaller lesion was not visible, even in retrospect. CONCLUSIONS. The coexistence of multiple and synchronous primary tumors of different histology within the same kidney has been only rarely described. To the best of our knowledge, in literature there are only case reports with the exception of a case of renal oncocytoma with evolving papillary RCC. We believe that this condition could be more frequent if the radiologist and the anatomopathologist try to find it.