A case of a ureteral inflammatory pseudotumor

The patient was a 28-year-old woman. In February 2002, she visited another physician due to acute pyelonephritis. Based on CT findings, a lower ureteral stricture caused by a benign extraureteral tumor was diagnosed. The patient was being monitored by periodic exchange of ureteral stents. In February 2003, the patient visited our department seeking a second opinion. Retrograde pyelography showed an elliptical filling defect in the lower urinary tract. Ureteroscopy showed that the surface of the tumor was mostly smooth, regular and partially papillary. Biopsy was performed, and histological analysis revealed only nonspecific inflammation. In December 2003, based on a diagnosis of benign ureteral tumor, we performed partial resection of the right urinary tract and ureterocystoneostomy. As rapid intraoperative pathological analysis confirmed an inflammatory pseudotumor, total nephroureterectomy was avoided.     

Squamous cell carcinoma arising in a suprasellar epidermoid cyst. Case report

A case is presented in which a squamous cell carcinoma developed in an intracranial epidermoid cyst. The patient was a 54-year-old woman with a 3-year history of depression and amblyopia; no focal findings were noted and she was diagnosed as having psychiatric disorders. On her final admission she showed clinical evidence of a rapidly growing intracranial mass. Computerized tomography (CT) identified a right parasellar and temporal lesion which was then incompletely removed. The literature on primary intracranial squamous cell carcinoma is reviewed, and the role of CT scanning in preoperative diagnosis of this lesion is discussed.     

Growing aneurysm presenting with Weber's syndrome and obstructive hydrocephalus--a case report

A case with two cerebral aneurysms, in which one at the origin of the left superior cerebellar artery (SCA) grew and presented with Weber's syndrome and obstructive hydrocephalus, is reported. The patient was a 69-year-old female, who had severe headache and vomited. On admission, neck stiffness was recognized. CT scan showed findings of subarachnoid hemorrhage. Angiograms demonstrated two saccular aneurysms at the right middle cerebral artery (MCA) bifurcation and at the origin of the left SCA. Craniotomy and neck clipping of the aneurysm at the right MCA was performed. After discharge, left oculomotor palsy appeared and gradually progressed. Severe headache and right hemiparesis suddenly occurred two years after the first attack. On the second admission, CT scan revealed high density on the brain surface and a well enhanced round lesion at the left ambient cistern. Left vertebral angiogram demonstrated increase in size of the aneurysm at the left SCA. The patient was discharged after conservative therapy. Drowsiness and urinary incontinence appeared, and she was admitted for the third time three years after the first admission. CT scan showed an enhancing mass lesion sized 25 X 30 mm beside the left midbrain and obstructive hydrocephalus. The aneurysm at the SCA no longer seen on the left vertebral angiogram. V-P shunt was performed. Both Weber's syndrome and obstructive hydrocephalus in this case indicate an aneurysmal natural history, in which aneurysm becomes gigantic and thrombosed spontaneously.     

A case report of inflammatory pseudotumor of the lung: rapid recurrence appearing as multiple lung nodules.

An inflammatory pseudotumor (IPT), known as a plasma cell granuloma, is a relatively uncommon neoplasm with an unidentified etiology. To our knowledge, an early relapse with multiple lung nodules following lung resection and occurrences in multiple organs is extremely rare. The patient was a 49-year-old man who presented with left chest pain and fever. A chest film demonstrated an 8x8 cm mass in the left lower lobe. During thoracotomy in April 2001, a mass was seen to have invaded the diaphragm with remarkable pleural adhesion. The intraoperative pathological diagnosis was infiltration of inflammatory cells with no malignancy. Therefore, a partial resection of the left lower lobe was performed. Three months after the thoracotomy, a chest CT scan disclosed multiple nodular opacities bilaterally, and an open lung-biopsy of the right lung was performed in January 2002. His past history included an excision of a mass on the penis in another hospital in 1994 and a subcutaneous mass that appeared on the right thigh and disappeared spontaneously following a needle biopsy in 1999. Pathologically there was no fundamental difference among his present lesion and the former two. The pathological diagnosis at each occurrence was inflammatory pseudotumor (IPT). In immunohistochemical study, the staining with smooth muscle actin cells was positive, but was negative for the staining with anaplastic lymphoma kinase (ALK). With no evidence of a neoplastic process, these histopathological and immunohistochemical findings could imply that this case may be a postinflammatory reparative reaction, although his condition exhibited the clinically aggressive behavior of suspected lung metastasis.     

Inflammatory pseudotumor of the urinary bladder: a case report

A 52-year-old man presented with gross hematuria. He had neither history of urinary tract infection nor trauma. Cystoscopy revealed a bladder tumor with ulcer on a left lateral wall. Computed tomography confirmed a round solid mass 3 cm in diameter invading deeply into the muscle layer of the urinary bladder. Transurethral biopsy revealed an inflammatory pseudotumor of the urinary bladder. Partial cystectomy was performed. This is the 38th reported case of inflammatory pseudotumor of the urinary bladder in Japan. No local recurrence was seen 3 months after surgery.     

Renal inflammatory pseudotumor after embolization for arteriovenous malformation: a case report

A 61-year-old man was admitted to our hospital with the chief complaint of asymptomatic macrohematuria. Because he was diagnosed with arteriovenous malformation of the right kidney by angiography, embolization was performed. However, 2 years and 3 months later, bleeding from the right kidney was detected. Computed tomography (CT) revealed a low density area (1.8 cm) in the right kidney protruding to the renal pelvic adjacent to the old embolized lesion. Since we could not make a conclusive diagnosis as malignant disease by ureteroscopy and angiography, we have decided to follow the case carefully. Nine months later, macroscopic hematuria worsened, and the low density area by CT in the right kidney expanded. Therefore, we finally decided to perform right total nephroureterectomy. The tumor was histologically diagnosed as renal inflammatory pseudotumor. This is the 14th case reported in Japan. We here report the renal inflammatory pseudotumor with a review of the Japanese literature.     

Tentorial dural arteriovenous fistula presenting symptoms due to mass effect on the dilated draining vein: case report

BACKGROUND: Tentorial dural arteriovenous fistula (AVF) presented symptoms due to mass effect on the dilated draining vein. We report a patient presenting left hemisensory disturbance because of compression of the midbrain by a dilated draining vein of the AVF. The AVF has disappeared completely by drainer clipping after feeder embolization. CASE DESCRIPTION: A 66-year-old woman presented with left hemisensory disturbance due to compression of the midbrain by a dilated draining vein with tentorial dural AVF. On admission, she complained of left hemisensory disturbance. Enhanced computed tomography (CT), magnetic resonance imaging, and magnetic resonance angiogram revealed the midbrain compressed by a mass lesion, which was a draining vein with AVF fed by numerous feeding arteries neighboring the right tentorial edge. The single-photon emission CT (SPECT) did not depict any laterality. CONCLUSION: This is a rare case of a tentorial dural AVF which caused left hemisensory disturbance not by venous congestion, but by a compression of the midbrain by the dilated draining vein, because SPECT showed no laterality. In this case, magnetic resonance angiogram, 3-dimensional CT angiography, and SPECT were useful in the diagnosis and planning the strategy for treatment.     

50例肝脏炎性假瘤的临床分析

目的：探讨肝脏炎性假瘤的临床表现，为诊断及治疗提供依据。方法：收集50例经手术和病理证的肝脏炎性假瘤病例资料进行回顾分析。结果：该组平均年龄44岁，男性多见，占68％。50例患者中25例无明显症状，21例有右上腹疼痛，4例出现发热。病灶位于右叶占80％。其中84％患者B超表现为低回声或略低回声，66％边界清楚，72％肿块内部回声不均匀。CT检查示均为低密度影，形态不规则，只有19．4％的患者增强扫描后出现不同时期的增强。17例患者行MRI检查T1加权粉氏信号，不均匀，边缘模糊，质子加权为等信号；T2加权4例等低信号，2例等信号，11例为略高信号，病灶内似有分隔，增强后只有2例轻度强化。50例术后均恢复良好。结论：B超发现肝脏炎性假瘤的重要手段，动态CT扫描及MRI对于鉴别其他肝脏占位有较大帮助。手术切除仍是目前首选的治疗方法。     

Inflammatory pseudotumor diagnosed by thoracoscopic resections; report of a case

A 65-year-old woman was referred to our hospital because of cough and sputum. Chest CT scan revealed a coin lesion (about 1.5 cm diameter) with slight speculation at the right upper lobe. We suspected a lung cancer and performed video assisted thoracic surgery (VATS). Under the thoracoscopy, the tumor was completely extirpated with safety margin by the partial resection of the right upper lobe. Pathological findings definitely revealed inflammatory pseudotumor, fibrohistiocytic variant type. VATS is a good indication for the diagnosis and treatment of inflammatory pseudotumor. This case was reported together with some reviews of the literature.     

Inflammatory pseudotumor of the liver: Radiologic diagnosis

To determine the characteristic radiologic findings of inflammatory pseudotumor of the liver, various imagings of ten patients (11 lesions) with proven diagnoses of inflammatory pseudotumor were reviewed. Radiologic examinations, i.e., computed tomography (CT; 11 lesions), ultrasonography (11 lesions), magnetic resonance imaging (MRI; 6 lesions), angiography (10 lesions), CT during arterio-portography (CTAP; 3 lesions), and gallium-67 scans (9 lesions) were analyzed for their utility in diagnosis. No inflammatory pseudotumor showed a fibrous capsule around the lesion. Ten of the 11 lesions were poorly demarcated on most of the imagings, and all 11 lesions showed delayed and/or prolonged enhancement on CT or MRI. Arterio-portal shunting was observed in 4 lesions after contrast material administration on CT or angiography. Central lesions with suspiciously high fibrotic tissue content were demonstrated in 5 lesions on CT or MRI. Major vessels coursing in the lesions were demonstrated in 4 lesions by CT, MRI, and CTAP. Inflammatory pseudotumor of the liver should be included in the differential diagnosis in patients with hepatic masses, even if the patients are asymptomatic. If radiologic examinations suggest inflammatory pseudotumor, percutaneous biopsies should be performed so that unnecessary surgery can be avoided.     

A case of fatal herpes encephalitis presenting massive cerebral hematoma

A 53-year-old woman was admitted to the hospital because of headache and disturbance of consciousness. She was afebrile. No inflammatory reaction was identified on serologic examination. Radiological findings showed acute-subacute, massive intracerebral hemorrhage in the right temporal lobe, compressing the brain stem contra-laterally. On the day of admission, she underwent a right temporal craniotomy for the removal of the mass lesion. The resected brain tissue demonstrated a small hemorrhage and edema accompanied by the infiltration of lymphoid cells into the subarachnoid space. Several days after surgery, the patient became lethargic and showed urinary incontinence. Late onset of fever and CSF findings suggested she was suffering from viral encephalitis. Serological findings, however, disclosed no antibody production against HSV, HZV, or CMV. For the diagnosis, a biopsy of the brain was carried out and herpes encephalitis was subsequently proved. Unfortunately, her condition deteriorated quickly and she died without anti-viral treatment.     

Inflammatory Pseudotumor Arising from the Right Ventricular Outflow Tract Causing Pulmonary Stenosis

Abstract Inflammatory pseudotumor (also known as inflammatory myofibroblastic tumor) is an uncommon spindle cell lesion that was initially recognized in the lung and is now known to occur in virtually every major organ of the body. We report a case of a seven‐year‐old male who had an inflammatory pseudotumor of the right ventricular outflow tract involving the pulmonary valve causing pulmonary stenosis. (J Card Surg 2012;27:696‐698)     

Clinical versatility of the inflammatory pseudotumor in urology

ObjectiveThe inflammatory pseudotumor is a rare lesion, having benign behavior and some histological heterogeneity that appears in the genitourinary tract. A series of urogenital inflammatory pseudotumors are reviewed with emphasis on their clinicopathological and immunohistochemical characteristics.Material and methodsA retrospective study the causistics treated between January 1981 in December 2010 was performed. It identified the cases of inflammatory pseudotumor with urogenital localization. The variables age, gender, symptoms, topography, treatment and anatomopathological and immunohistochemical characteristics of each case were analyzed.ResultsA total of 8 cases of the urogenital-located inflammatory pseudotumor are described. Of these, 6 were located in the bladder, one in the kidney and one in the epididymis. Mean age of the patients was 46.75 (±19.84) years. Tumor presentation symptoms were macroscopic hematuria, single symptom or accompanied by symptoms of the lower urinary tract and inguinoscrotal mass. In regards to treatment in the cases of bladder localization, transuretheral ± cystectomy were performed. In the case of kidney localization, treatment was made by means of pyelotomy and exeresis, and in the case of epididymis localization, simple exeresis was performed. The anatomopathological study showed inflammatory pseudotumor in every cases, having a mesenchymal and myxoid appearance, with fusiform cells of eosinophil cytoplasm, with presence of frequent inflammatory cells. The most common immunohistochemical pattern shows positivity for the muscle-specific actin (HHF-35), vimentin and negativity for protein S-100. ALK-1 was positive and 87.5% of the cases.ConclusionThe inflammatory pseudotumor is a condition having good prognosis which, when there is a good histopathological and immunohistochemical diagnosis, every urologist should recognize and distinguish in order to carry out as conservative a surgical treatment as possible.     

Giant optic glioma--case report (author's transl)]

A 3 1/2-year-old girl with a huge optic glioma was reported. On February 26, 1978, she was hospitalized for signs of increased intracranial pressure, namely headache, vomiting and consciousness disturbance. Before admission she did not complain of her visual disturbance. A huge mass lesion in the subfrontal-suprasellar region was found by neuroradiological examination. The operation was performed on March 7, 1978, and the tumor arising from the right optic nerve, about 170 grams in weight, was totally removed in piecemeals. Histopathological diagnosis was pilocytic astrocytoma. Immediately after operation diabetes insipidus and hypernatremia developed, but two months later these symptoms disappeared. Post-operative CT scan demonstrated no mass lesion in the subfrontal-suprasellar region. After radiation therapy, she was discharged with slight left hemiparesis on August 31, 1978. Though her right eye was blind, visual acuity remained 0.2 in the left eye. No other neurologic deficits could be found.     

Torsed reactive nodular fibrous pseudotumor in an adolescent: case report and review of the literature

We describe a case of a 13-year-old girl presenting with acute abdominal pain and imaging suggesting acute appendicitis. Upon laparoscopy, she was found to have a mass attached to the jejunum that had torsed upon its blood supply. On histopathologic studies, the mass was determined to be a reactive nodular fibrous pseudotumor. This lesion is a benign neoplasm that may arise from the gastrointestinal tract and has only been recently described in the literature. Our case is unique because it is the first report of reactive nodular fibrous pseudotumor presenting as a torsed polypoid lesion and the first arising in an adolescent.     

Primary pituitary carcinoma with spinal cord metastasis--case report.

The authors report a rare case of non-functioning pituitary carcinoma with spinal cord metastasis. A 37-year-old female presented with a 2-month history of right retro-orbital ache and vomiting. She had a pituitary adenoma removed 3 years prior to admission. Neuroradiologically, a mass lesion was demonstrated in the right middle cranial fossa. The tumor was removed through craniotomy and was histologically diagnosed as pituitary carcinoma. One week after the operation, tetraplegia developed and CT scans demonstrated a spinal canal lesion. Although the tumor was removed through C3-C7 laminectomies, she gradually deteriorated and died. At autopsy, a tumor was disclosed in the right temporal lobe and basal ganglia. Moreover, the tumor invaded into the middle cranial fossa and the parasellar region.     

Inflammatory pseudotumor of the bladder: a new case report

Inflammatory pseudotumor is a reactive benign lesion which can be very difficult to distinguish from some malignant bladder tumors like sarcomas or sarcomatoid carcinoma. Inflammatory pseudotumour (IPT) of the urinary bladder is a benign proliferate lesion which can simulate clinically and histologically a sarcoma. A case of an inflammatory pseudotumor of the urinary bladder in a 18-years-old man is presented. This patient presented with sudden onset of gross painless hematurial related to large polypoid and ulcerated bladder masses found on endoscopy. Initial pathological analysis was interpreted as rhabdomyosarcoma but subsequent reviews were consistent with a benign process resembling nodular fasciitis. This rare, benign and presumed non-neoplastic, reactive lesion must be differentiated from sarcomas of the urinary bladder. Immunohistochemistry seems to be the method of election in differentiating inflammatory pseudo-tumor from other spindle cell proliferations of the bladder. When diagnosis is certain, complete transurethral resection is the treatment of choice. However, if there is no total pathologic confirmation, if it is a very wide lesion or if it is recurring after endoscopic resection, a partial cystectomy is suggested.     

A case of neuropathic bladder with inflammatory pseudotumor of the bladder

A 36-year-old woman was referred with urinary incontinence and recurrent episodes of pyelonephritis. Two years prior to her visit, she underwent transurethral resection of a bladder tumor, 5 cm in diameter. Total cystectomy was suggested, as the initial diagnosis was sarcoma. Close re-evaluation of the pathological specimen lead to the final diagnosis of a benign inflammatory pseudotumor of the bladder as the tumor consisted of smooth muscle cells with white blood cell infiltration but without mitotic figures. The tumor disappeared during the follow up period. A cystography revealed bilateral vesicoureteral reflux with marked trabeculated bladder. A cystometry showed loss of bladder sensation and a low compliance bladder without detrusor contraction. Neurological examination and a magnetic resonance imaging of the spinal cord failed to prove the presence of definite neurological abnormalities. She was finally diagnosed with neuropathic bladder of unknown origin. In this case, she had been suffering from recurrent cystitis about 6 years before the resection of bladder tumor and it was suggested that the occurrence of the inflammatory pseudotumor of bladder would be related with chronic urinary tract infection due to neuropathic bladder. Urinary incontinence and urinary tract infection were controlled successfully with clean intermittent self-catheterization and adequate administration of antimicrobial drugs. Vesicoureteral reflux was treated with injection of GAX collagen into the ureteral orifices. No tumor recurrence has been found up to the present time, 5 years after the resection of bladder tumor.     

儿童输尿管炎性假瘤1例报告并文献复习

目的：探讨输尿管炎性假瘤(1nflammatory pseudotumor，IPT)的临床特点，提高其诊治水平。方法：报告1例9岁男性输尿管IPT患者，并复习文献就相关问题予以讨论。结果：术后患者恢复良好，痊愈出院。病理检查证实为输尿管IPT。结论：IPT指组织炎性增生形成的肿瘤样团块，根据症状、体征及影像学检查结果难与恶性肿瘤相鉴别，其确诊有赖于病理学检查。输尿管IPT治疗大多仍需行外科手术，并在治疗后进行随访。     

Spontaneous regression of inflammatory pseudotumor of the urinary bladder

Inflammatory pseudotumor of the urinary bladder is a benign proliferative lesion of the submucosa and its treatment has not yet been established. Here we present a case of spontaneously regressed inflammatory pseudotumor of the urinary bladder.