The authors report two cases of recurrent transitional cell carcinoma at the anastomotic site of the ileal conduit and ureter after total cystectomy. In one patient, a recurrent tumor was also found in the distal ureter which had not been removed during previous nephrectomy. At follow up, the patients presented with gross hematuria or hydronephrosis, and the presence of mass lesions was demonstrated by intravenous urography,antegrade pyelography, and/or loopography. Transitional cell carcinoma was diagnosed by surgery and pathologic examination.
Carcinoma, Transitional Cell* ; Cystectomy ; Follow-Up Studies ; Hematuria ; Humans ; Hydronephrosis ; Nephrectomy ; Ureter* ; Urinary Bladder Neoplasms ; Urinary Diversion* ; Urography

PURPOSE: To evaluate the efficacy of percutaneous transcatheter sclerotherapy using povidone-iodine andethanol for the treatment of postoperative pelvic lymphoceles MATERIALS AND METHODS: Between January 1995 andApril 1998, 22 lymphoceles in 21 women who had under-gone pelvic surgery were subjected to percutaneoustranscatheter sclerotherapy using povidone-iodine and ethanol. Biochemical and cytological examination revealedthat 16 lymphoceles were sterile and six were in-fected. The diameter of lymphoceles varied between 3 and 20(average; 7.9 cm) and the initial volume of drainage ranged from 10ml to 1200ml. When the amount of drainagedecreased to less than 5 -10 ml/day and when the lymphocele was collapsed on follow-up sinography, the catheterwas removed. By means of sonog-raphy, all patients were followed up. The duration of this ranged from 1 month to 3years 4 months (average, 18 months). RESULTS: After percutaneous transcatheter sclerotherapy, 21 of 22lymphoceles were seen to have collapsed. Three lymphoceles recurred during the follow-up period. Eventually 18 of22 lymphoceles (82 %) were suc-cessfully treated, without recurrence. The duration of catheter drainage rangedfrom 3 to 15 (average, 8.6) days. CONCLUSION: Because of its high initial success rate, low rate of recurrence,and the short duration of catheter drainage, percutaneous transcatheter sclerotherapy using povidone-iodine andethanol is thought to be an ef-fective treatment for postoperative pelvic lymphoceles.
Catheters ; Drainage ; Ethanol* ; Female ; Follow-Up Studies ; Humans ; Lymphocele* ; Povidone-Iodine* ; Recurrence ; Sclerotherapy*

The outbreak of Coronavirus Disease 2019 (COVID-19) caused a worldwide pandemic. Less than 6 weeks after the first confirmed cases in Korea, the patient number exceeded 5,000, which overcrowded limited hospital resources and forced confirmed patients to stay at home. To allocate medical resources efficiently, Korea implemented a novel institution for the purpose of treating patients with cohort isolation out of hospital, namely the Community Treatment Center (CTC). Herein, we report results of the initial management of patients at one of the largest CTC in Korea. A total of 309 patients were admitted to our CTC. During the first two weeks, 7 patients were transferred to the hospital because of symptom aggravation and 107 patients were discharged without any complication. Although it is a novel concept and may have some limitations, CTC may be a very cost-effective and resource-saving strategy in managing massive cases of COVID-19 or other emerging infectious diseases.

This study was designed to evaluate the potential applications of magnetic resonance imaging for the diagnosis of early and sequential changes of acute renal ischemia. Renal isehmia was induced in seventeen rabbits by surgical ligation of the left renal artery. Magnetic resonance imaging(MRI) was performed with a 2.0T super conductive MR system and s pin-echo technique was used with echo times(TE) of 30 and 80 msec and repetition times(TR) or 0.5 and 2.5 seconds. Kidneys were evaluated before and up to 48 hours after left renal artery ligation, and the spin echo images were analyzed for intensity difference and T1, T2 relaxation times between the cortex and the medulla of both kidneys. After one, and one and half hour following ligation of the left renal artery, the kidneys showed a 4-20% decrease in the left cortex compared to the right cortex contrast uptake(CCC) (P<01). There was a 14-29% decrease in left medulla to right medulla contrast uptake(MMC) (P<01). A 29-147% increase in contrast uptake was noted when the left cortex was compared to the left medulla(P<05). There was a 51-68% decrease in CMC of the right kidney (P<05) on three different spin echo images. In the cortex of the left kidney, T2 relaxation time decreased 14% (P<01). CCC and MMC showed more prominent changes than CMC, and sequential changes of CCC and MMC were most prominent on T2 weighted images with TR = 2.5sec and TE=80msec when compared with T1 weighted and proton density weighted images. Twelve hours after renal arterial ligation. T2 relaxation time, CMC, CCC, and MMC returned to normal values and these findings were believed to be due to congestion and collateral blood supply. In renal ischemia, the most useful MRI findings for diagnosis were fund to be changes of CCC and MMC on T2 weighted image, and T2 relaxation time of the cortex in the ischemic kidney.
Diagnosis ; Estrogens, Conjugated (USP) ; Financial Management ; Ischemia* ; Kidney ; Ligation* ; Magnetic Resonance Imaging* ; Protons ; Rabbits ; Reference Values ; Relaxation ; Renal Artery*

This study was designed to evaluate the potential applications of magnetic resonance imaging for the diagnosis of early and sequential changes of acute renal ischemia. Renal isehmia was induced in seventeen rabbits by surgical ligation of the left renal artery. Magnetic resonance imaging(MRI) was performed with a 2.0T super conductive MR system and s pin-echo technique was used with echo times(TE) of 30 and 80 msec and repetition times(TR) or 0.5 and 2.5 seconds. Kidneys were evaluated before and up to 48 hours after left renal artery ligation, and the spin echo images were analyzed for intensity difference and T1, T2 relaxation times between the cortex and the medulla of both kidneys. After one, and one and half hour following ligation of the left renal artery, the kidneys showed a 4-20% decrease in the left cortex compared to the right cortex contrast uptake(CCC) (P<01). There was a 14-29% decrease in left medulla to right medulla contrast uptake(MMC) (P<01). A 29-147% increase in contrast uptake was noted when the left cortex was compared to the left medulla(P<05). There was a 51-68% decrease in CMC of the right kidney (P<05) on three different spin echo images. In the cortex of the left kidney, T2 relaxation time decreased 14% (P<01). CCC and MMC showed more prominent changes than CMC, and sequential changes of CCC and MMC were most prominent on T2 weighted images with TR = 2.5sec and TE=80msec when compared with T1 weighted and proton density weighted images. Twelve hours after renal arterial ligation. T2 relaxation time, CMC, CCC, and MMC returned to normal values and these findings were believed to be due to congestion and collateral blood supply. In renal ischemia, the most useful MRI findings for diagnosis were fund to be changes of CCC and MMC on T2 weighted image, and T2 relaxation time of the cortex in the ischemic kidney.
Diagnosis ; Estrogens, Conjugated (USP) ; Financial Management ; Ischemia* ; Kidney ; Ligation* ; Magnetic Resonance Imaging* ; Protons ; Rabbits ; Reference Values ; Relaxation ; Renal Artery*

Massive ovarian edema is a rare tumor-like condition occurring in young women; it involves enlargement of the ovary, caused by intermittent torsion of the mesovarium. Ultrasonographically, a well-defined inhomogeneous soft tissue mass lesion is seen, and this cannot be distinguished from other solid ovarian tumors. The MRI findings, seen on T1WI, are inhomogeneous high signal intensity of the central part, with peripheral low signal intensity of the mass lesion. On T2WI, the inner part of the mass shows high signal intensity and the peripheral part, low signal intensity. Ovarian follicles are arranged peripherally, and are seen as low signal intensity on T1WI, and high signal intensity on T2WI. These MR findings are specific for the diagnosis of massive ovarian edema.
Diagnosis ; Edema* ; Female ; Humans ; Magnetic Resonance Imaging* ; Ovarian Follicle ; Ovary

Hydatid disease is Echinococcus granulosus infection in its larva form. It is endemic in many sheep- and cattle-raising countries throughout the world. In Korea seventeen cases have been reported but relapsed case is not. We report relapsed hydatid disease in pelvic cavity 10 years after primary surgery for Echinococcal cysts in the liver and pelvic cavity. The cysts were surgically removed and the patient was managed with postoperative adjuvant treatment with albendazole and followed with serologic test for anti-echinoccocus antibodies by ELISA.
Albendazole ; Antibodies ; Echinococcosis* ; Echinococcus ; Echinococcus granulosus ; Enzyme-Linked Immunosorbent Assay ; Humans ; Korea ; Larva ; Liver ; Serologic Tests

The surgical approach to spinal tumors varies not only with the level and location of the tumor, but also with the type and extent of the tumor. Some of the dumbbell neurofibroma(neurilemmoma) can be removed through simple laminectomy, but usually are approached through two separate incisions by two stages. In this report, posterior and anterolateral approaches in a single stage to dumbbell neurofibroma(neurilemmoma) of the spinal region are described. This approach provides full exposure of intra- and paraspinal portions of the tumor, thus permitting safe dissection and total removal. Six patients who underwent this procedure are described to illustrate its application.
Humans ; Laminectomy ; Neurofibroma ; Spine*

Uterine cervical carcinoma is one of the most common malignant tumors occur-ring in females. After primary treatment, patients are usually followed up with CT or MRI and the findings of these modalities may be the first sign of recurrent disease. Because earlier additional treatment by chemotherapy or radiation therapy may improve the prognosis, the early detection of recurrent cervical carcinoma is clinically important. In this article, we review the CT and MR imaging findings of recurrent uterine cervical carcinoma, and assign them to one of four groups: a)recurrence at the primary site, involving the intrapelvic organs, b) extension to the pelvic side-wall, c) metastases to pelvic and extrapelvic lymph nodes, or d)metastases to distant organs. A further contribution of CT and MR imaging is the detection of hydronephrosis due to ureteral obstruction. The cases in each group are illustrated and discussed, and since an awareness of the spectrum of imaging findings of recurrent cervical carcinoma is likely to lead to its early detection, radi-ologists should be familiar with the information presented.
Adult ; Aged ; Case-Control Studies ; Cervix Neoplasms/*diagnosis/radiography ; Cervix Uteri/pathology ; Female ; Human ; Lymphatic Metastasis ; Magnetic Resonance Imaging ; Middle Age ; Neoplasm Invasiveness ; Neoplasm Recurrence, Local/*diagnosis/radiography ; Tomography, X-Ray Computed

Retroperitoneal fibrosis is a fibroproliferative process involving the retroperitoneum. It may be idiopathic or can be caused by methysergide ingestion, perianeurysmal inflammation, a leaking aneurysm, urinoma or irradiation. The symptoms and signs of retroperitoneal fibrosis are variable, and for diagnosis, imaging is therefore essential. The typical imaging finding is a fibrotic lesion in front of the lower vertebrae with ureteral obstruction. Atypical lesions, however, may occur in other parts of the retroperitoneum. The aim of this report is to describe the clinical features and various imaging findings of etroperitoneal fibrosis.
Aneurysm ; Diagnosis ; Eating ; Fibrosis ; Inflammation ; Methysergide ; Retroperitoneal Fibrosis* ; Spine ; Ureteral Obstruction ; Urinoma