Atypical Presentations of Retroperitoneal Giant Schwannomas

Özbir, Sait; Girgin, Mehmet Cengiz; Kara, Cengiz; Dinçel, Çetin

doi:10.4081/cp.2011.e47

Cited by 6 publications

(10 citation statements)

References 11 publications

(31 reference statements)

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“…Areas of necrosis or cyst formation are commonly present and the lesions may be covered by a fibrous pseudocapsule and invade surrounding soft tissue, as in our case [1, 7]. …”

Section: Discussionmentioning

confidence: 84%

“…Ultrasonography can discriminate solid tumors from cystic masses [7]. CT scan shows well-defined, low, or mixed attenuation masses with cystic necrotic central areas [7].…”

Section: Discussionmentioning

confidence: 99%

“…Ultrasonography can discriminate solid tumors from cystic masses [7]. CT scan shows well-defined, low, or mixed attenuation masses with cystic necrotic central areas [7]. Hemorrhage, calcification, and hyalinization may be present, but all these changes are not specific and the main use of CT is for detection of metastases [1, 2, 6, 7].…”

Section: Discussionmentioning

confidence: 99%

“…CT scan shows well-defined, low, or mixed attenuation masses with cystic necrotic central areas [7]. Hemorrhage, calcification, and hyalinization may be present, but all these changes are not specific and the main use of CT is for detection of metastases [1, 2, 6, 7]. MRI is the modality of choice for characterizing the anatomical extent of the tumor for surgical planning and helps differentiate MPNSTs from benign plexiform neurofibromas [1–3].…”

Section: Discussionmentioning

confidence: 99%

“…It may be necessary to sacrifice adjacent tissue and viscera [7]. Furthermore, it has been shown that, in case of malignancy, the local recurrence rate after marginal excision is 72% versus 11.7% after wide margin resection [6].…”

Section: Discussionmentioning

confidence: 99%

See 4 more Smart Citations

Synchronous Malignant Peripheral Nerve Sheath Tumor and Adenocarcinoma of the Prostate: Case Report and Literature Review

Ferakis

Katsimantas

Bouropoulos

et al. 2016

Case Reports in Urology

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Malignant Peripheral Nerve Sheath Tumors (MPNSTs) of the prostate are extremely rare. A very unusual case of simultaneous adenocarcinoma and MPNST of the prostate is reported. A 60-year-old Caucasian male presented for annual urologic examination. Digital rectal examination revealed a painless, toughish, and asymmetrically enlarged prostate. Serum prostate-specific antigen was 1 ng/mL. Radiologic examinations demonstrated a large mass, which was arising from the left peripheral lobe of the prostate. The patient underwent transrectal ultrasound-guided biopsy of the prostate which revealed a smooth muscle tumor of uncertain malignant potential. Radical retropubic prostatectomy with en bloc removal of the mass and the seminal vesicles was performed and histology demonstrated low-grade MPNST and adenocarcinoma of the prostate. To the best of our knowledge, this is the first report of simultaneous prostatic adenocarcinoma and MPNST in the English literature.

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“…Areas of necrosis or cyst formation are commonly present and the lesions may be covered by a fibrous pseudocapsule and invade surrounding soft tissue, as in our case [1, 7]. …”

Section: Discussionmentioning

confidence: 84%

“…Ultrasonography can discriminate solid tumors from cystic masses [7]. CT scan shows well-defined, low, or mixed attenuation masses with cystic necrotic central areas [7].…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Synchronous Malignant Peripheral Nerve Sheath Tumor and Adenocarcinoma of the Prostate: Case Report and Literature Review

Ferakis

Katsimantas

Bouropoulos

et al. 2016

Case Reports in Urology

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Laparoscopic nephrectomy for giant benign renal schwannoma: a case report and review of literature

et al. 2020

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Benign giant renal schwannoma is rarely found and the diagnosis difficulty only depends on physical and imagological examination. Pathological examination is essential to confirm the diagnosis of renal schwannoma. Nephrectomy and tumorectomy are primary treatments for renal schwannoma. Although most of the reported patients present satisfactory outcome, however, there is still not sufficient evidence to reveal the biological characteristics and post-operation recurrence rate of renal schwannoma. Herein, we report a rare case of giant and complicated renal schwannoma. A 56-years-old female patient was admitted to the urology department due to left lower back pain for approximately 5 days. No positive signs and other special abnormalities were found. CT scan presented a soft tissue tumor with inhomogeneous enhanced in the renal hilum. Surgery was performed to excise the tumor and left renal. Renal schwannoma was confirmed by pathological examination. At the 6-month follow-up, no evidence of recurrence was found. Our present report could provide more material for further study.

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Surgical management of retroperitoneal schwannoma complicated with severe hydronephrosis

et al. 2018

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Rationale:Schwannomas are usually benign tumors arising from well-differentiated schwann cells, which rarely occur in the retroperitoneal space. The lack of specific signs and radiologic imaging characteristics makes preoperative diagnosis rather difficult. Most retroperitoneal schwannomas are benign and the primary treatment choice for retroperitoneal schwannomas is surgical excision, however, the involvement of the urinary system is scarcely reported.Patient concerns:A 34-year-old woman presented with progressive left abdominal pain and rebound abdominal mass at the left lower quadrant for 1 month. Radiological imaging suggested capsulated solid mass with cystic and necrotic areas in the retroperitoneum accompanied by severe left kidney hydronephrosis and preoperative biopsy result was inconclusive.Diagnoses:We believe this is a rare case of retroperitoneal schwannoma complicated with severe hydronephrosis.Interventions:After preparation, the patient underwent laparoscopy exploration and converted to open surgical exploration. The patient accepted complete surgical excision of the retroperitoneal tumor and left kidney. Postoperative pathology diagnosis of the mass was proven to be benign retroperitoneal schwannoma.Outcomes:Postoperative course of the patient was uneventful and the left abdominal pain was greatly improved. After 12-month follow up, no evidence of recurrence or any other complication including renal failure was observed.Lessons:Preoperative imaging and preoperative ultrasound-guided biopsy are helpful to make accurate diagnosis. The final diagnosis is based on postoperative histological and immunohistochemical findings. The primary treatment option is complete surgical resection of the retroperitoneal schwannoma and the involved upper urinary system when severe hydronephrosis occured. Local recurrence and overall survival are closely correlated with negative resection margins and pathology types.

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Atypical Presentations of Retroperitoneal Giant Schwannomas

Cited by 6 publications

References 11 publications

Synchronous Malignant Peripheral Nerve Sheath Tumor and Adenocarcinoma of the Prostate: Case Report and Literature Review

Synchronous Malignant Peripheral Nerve Sheath Tumor and Adenocarcinoma of the Prostate: Case Report and Literature Review

Laparoscopic nephrectomy for giant benign renal schwannoma: a case report and review of literature

Surgical management of retroperitoneal schwannoma complicated with severe hydronephrosis

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