Perceptions of Coronavirus Disease 2019 (COVID-19) in Patients With Schizophrenia / 대한정신분열병학회지

Objectives@#The aim of this study was to investigate whether patients with schizophrenia are aware of the current status and have accurate information about COVID-19. @*Methods@#The participants consisted of 161 inpatients and 117 outpatients with schizophrenia and 40 normal controls. The subjects completed self-report questionnaires measuring changes in their daily life, their perceptions of the current status of COVID-19 and their basic knowledge about the disease. @*Results@#Compared to the normal control group, the inpatients and outpatients with schizophrenia underestimated the cumulative number of confirmed COVID-19 cases and overestimated the mortality rate of COVID-19. The mortality rates of COVID-19 and the common cold were higher in the order of inpatients, outpatients, and normal controls. The main route of SARS-CoV-2 infection and the main symptoms of COVID-19 were accurately recognized by more than 95% in the normal group and more than 80% in outpatients, but inpatients chose the correct answers at a lower rate. In the questions about misperceptions about COVID-19, the correct answer rate was high in the order of normal controls, outpatients, and inpatients. Most patients with schizophrenia obtained information about COVID-19 on TV, while most normal controls collected information through the internet. @*Conclusion@#This study showed that awareness of COVID-19 among patients with schizophrenia is insufficient. Additional measures are needed to provide accurate information and the current status of COVID-19 to patients with schizophrenia.

Deposed Queen Yoon Might Have Suffered From Bipolar Disorder / 신경정신의학

Deposed Queen Yoon was sentenced to death by her husband, King Seongjong, on account of extreme jealousy and inappropriate behaviors. It remains unclear whether her unusual behavior resulted from a psychiatric disorder. In this study, we addressed the issue of whether deposed Queen Yoon suffered from bipolar disorder. We reviewed Seongjong Sillok (Veritable Records of King Seongjong), Joseon Wangjo Sillok (Veritable Records of the Joseon Dynasty), and the available literature on deposed Queen Yoon. A review of the literature showed that deposed Queen Yoon might have experienced depressive and manic episodes. Her symptoms of episodic course, familial tendency of mood symptoms, and postpartum onset suggest that she might have suffered from bipolar disorder. Her symptoms and clinical course suggest that deposed Queen Yoon might have suffered from bipolar disorder. To the best of our knowledge, this is the first report suggesting that deposed Queen Yoon might have suffered from bipolar disorder.

Deposed Queen Yoon Might Have Suffered From Bipolar Disorder / 신경정신의학

Deposed Queen Yoon was sentenced to death by her husband, King Seongjong, on account of extreme jealousy and inappropriate behaviors. It remains unclear whether her unusual behavior resulted from a psychiatric disorder. In this study, we addressed the issue of whether deposed Queen Yoon suffered from bipolar disorder. We reviewed Seongjong Sillok (Veritable Records of King Seongjong), Joseon Wangjo Sillok (Veritable Records of the Joseon Dynasty), and the available literature on deposed Queen Yoon. A review of the literature showed that deposed Queen Yoon might have experienced depressive and manic episodes. Her symptoms of episodic course, familial tendency of mood symptoms, and postpartum onset suggest that she might have suffered from bipolar disorder. Her symptoms and clinical course suggest that deposed Queen Yoon might have suffered from bipolar disorder. To the best of our knowledge, this is the first report suggesting that deposed Queen Yoon might have suffered from bipolar disorder.

Main Reasons for and Associated Factors of the First Fundus Examination in Diabetic Patients

PURPOSE: To determine the major reasons that diabetics decide to undergo their first fundus examination, and the factors influencing such reasons. METHODS: Of the patients with type II diabetes who presented to the Department of Ophthalmology in Gachon University Gil Medical Center, 164 patients who underwent their first fundus examination after being diagnosed with diabetes were included in the study. Face-to-face and phone interviews with these patients were conducted. RESULTS: The average prevalence period from the diagnosis of diabetes to the first fundus examination was 8.3 ± 7.5 years. Of the diabetics who underwent their first fundus examination, 52.4% had diabetic retinopathy, with no significant difference in prevalence between the male and female patients (p = 0.118). The most common reason for deciding to undergo the first fundus examination was recommendation by a doctor (53.7%). For those patients who received their first fundus examination after recommendation by a doctor, the prevalence period from diabetes was the shortest among all patients (p < 0.001), and the prevalence and severity of diabetic retinopathy were the lowest (p < 0.001 and p = 0.017, respectively). The number of fundus examinations conducted following recommendation by a doctor was significantly higher in secondary and tertiary hospitals than in primary hospitals (p < 0.001). Education on diabetes and knowledge of diabetic ocular complications were found to be significantly correlated (p < 0.001). CONCLUSIONS: For patients who are diagnosed with diabetes and treated in primary hospitals, who are older, or who did not receive education on diabetes, recommendation by a doctor for early fundus examination is particularly important regardless of subjective visual disturbance. Moreover, patient education should be offered and ophthalmic examination should be recommended in primary hospitals.

Long-Term Outcome and Recurrence of Abnormal Head Posture after Surgery in Patients with Nystagmus

PURPOSE: To evaluate the long-term outcome and recurrence of abnormal head posture after modified Kestenbaum surgery in patients with nystagmus. METHODS: The medical records of 46 patients who underwent modified Kestenbaum procedure in horizontal recti muscles for nystagmus with abnormal head turn were retrospectively reviewed. We assessed the effect of surgery by comparing preoperative and postoperative clinical data such as visual acuity (log MAR) and degree of head turn. A reoperation or abnormal head turn of 10degrees or more at final visit were defined as recurrence. Patients were divided into 2 groups according to the presence of recurrence or reoperation. Clinical factors associated with recurrence or reoperation were compared between the 2 groups. RESULTS: The mean visual acuity was 0.38 in the better eye and 0.42 in the worse eye before surgery, which improved to 0.15 and 0.21 after surgery (each p < 0.001), with a mean follow-up period of 124 months. The mean degree of head turn was 41.41degrees preoperatively and was changed to 2.61degrees postoperatively (p < 0.001). The recurrence rate was 23.9% and the reoperation rate was 10.9%. Mental retardation, amblyopia, preoperative visual acuity, degree of head turn, and presence of strabismus were not associated with recurrence or reoperation. The mean age at first surgery was significantly lower in the reoperation group (p = 0.009). The mean visual acuity in the better eye at postoperative 6 months and in better and worse eyes at postoperative 1 year was significantly worse in the reoperation group (p = 0.034, 0.012 and 0.009, respectively). CONCLUSIONS: The visual acuity and head turn was improved after modified Kestenbaum surgery in patients with nystagmus and abnormal head posture. The reoperation rates were associated with earlier age of first operation and worse postoperative visual acuity. However, further prospective studies are necessary to clarify these factors.

Functional Magnetic Resonance Imaging Findings in Meares-Irlen Syndrome: A Pilot Sudy

PURPOSE: To investigate patterns of functional magnetic resonance imaging (fMRI) activation during sentence reading before and after wearing color-tinted lenses. METHODS: A total of 15 Meares-Irlen syndrome patients with a mean age of 23.4 years (range, 13 to 42 years) with no history of neurological or psychiatric disorders were scanned using a 3T MR scanner (Siemens, Tim-Trio, Germany). Each patient underwent two sessions of fMRI imaging (before and after MISViS color-tinted lens application). The fMRI paradigm included a block design of 20 seconds of rest (cross), 20 seconds of activation (sentence reading), and ten blocks (a total of 200 echo-planar image volumes) repeated for each session. Data preprocessing and analyses were performed using the SPM8 software package. RESULTS: The reading speed of patients improved more than 20% while wearing the selected lenses. When compared to the before-lens session, the after-lens session identified significant regions of activation in the left middle and superior temporal gyri (paired t-test; maximal z score, 5.38; Montreal Neurological Institute coordinate, -60 / -39 / 0; threshold at p < 0.05; corrected for multiple comparisons using family-wise error). No region of activation at the same threshold was found in the before-lens session as compared to the after-lens session. CONCLUSIONS: In the current study, we confirmed activation in the left middle and superior temporal gyri during sentence reading after wearing color-tinted lenses. These results could explain the effectiveness of color-tinted lenses in patients with Meares-Irlen syndrome.

The Relationship between Cognitive Decline and Psychopathology in Patients with Schizophrenia and Bipolar Disorder

OBJECTIVE: The primary goals of the present study were to assess intellectual function in participants with schizophrenia or bipolar disorder (BD) and to investigate the relationships between cognitive decline and the severity of each type of psychopathology. METHODS: The present study included 51 patients with schizophrenia and 42 with BD who were recruited from the psychiatry outpatient clinic of Jeju University Hospital between March 2011 and March 2014. The Korean Wechsler Adult Intelligence Scale (K-WAIS) was administered to each of the 93 participants, and they were categorized into two groups based on their current intelligence quotient (IQ) and their estimated premorbid IQ: severely impaired group (SIG) and mildly impaired group (MIG). The Minnesota Multiple Personality Inventory (MMPI) and the Brief Psychiatric Rating Scale (BPRS) were used to assess psychopathology. RESULTS: The SIG schizophrenia participants exhibited significantly higher scores on the frequent (F) and schizophrenia (Sc) subscales of the MMPI, but significantly lower scores on the correction (K) and psychopathic deviate (Pd) subscales compared with the MIG schizophrenia participants. Furthermore, the BPRS scores were significantly higher in the SIG schizophrenia participants relative to the MIG schizophrenia participants. The SIG BD participants had significantly higher F, masculinity-femininity (Mf), paranoia (Pa), and Sc but significantly lower Pd scores compared with the MIG BD participants. CONCLUSION: The present findings revealed a significant discrepancy between the estimated premorbid levels of cognitive function and current cognitive function in participants with schizophrenia or BD. Moreover, this discrepancy was correlated with severity of psychopathology in both groups.

Influence of Watching 3D Television on Refractive Error in Children with Exodeviation

PURPOSE: To investigate the effects of watching three-dimensional (3D) television (TV) on the angle of deviation and refractive error in children with exodeviation. METHODS: Twenty-three volunteers with exodeviation, aged 6 to 12 years, without any ocular abnormalities other than refractive error and exodeviation were recruited for this study. The subjects watched 3D TV for 50 minutes at a viewing distance of 2.8 meters. The image disparity of 3D contents was -1 to 1 degree. Refractive errors were measured before and immediately after watching TV and after a 10-minute rest. The changes in angle of deviation were also obtained. Refractive errors and angle of deviation before and after watching 3D TV were compared. RESULTS: The mean age of the subjects was 9.30 +/- 1.58 years. The mean baseline angle of deviation was 13.04 +/- 5.25 (6-30) prism diopters (PD), which did not change significantly immediately after watching 3D TV and after a 10-minute rest (p = 0.452). The mean refractive errors were -2.15 +/- 1.55 D in the right eye and -2.06 +/- 1.55 D in the left eye before and changed to -2.14 +/- 1.57 D and -2.11 +/- 1.45 D, respectively, immediately after watching 3D TV. After a 10 minute rest, the mean refractive errors were 2.14 +/- 1.53 D in the right eye and -2.07 +/- 1.53 D in the left eye. All changes in refractive errors were not statistically significant (p = 0.991 in right eye, 0.495 in left eye). The amount of myopic shift in both eyes immediately after watching 3D TV was correlated with the angle of exodeviation (r = 0.468, p = 0.024). However, the correlation disappeared after a 10-minute rest (r = 0.345, p = 0.107). CONCLUSIONS: Watching properly made 3D contents on 3D TV for 50 minutes at more than 2.8 meters of viewing distance did not affect the refractive error in children with exodeviation. Further studies on the relationship between the amount of myopic shift and the angle of exodeviation are necessary.

The Effect of Listening to Music on Auditory Hallucination in Patients with Schizophrenia / 신경정신의학

OBJECTIVES: Auditory hallucinations are a common complaint in patients with schizophrenia. They are also refractory to treatment in a substantial number of patients. The aim of this study was to investigate the effects of listening to music on auditory hallucinations, positive and negative symptoms, depression, and quality of life in subjects with schizophrenia. METHODS: Our study employed a single-blind (assessor blinded) randomized design with a crossover trial. Ten patients with schizophrenia were randomly assigned to two groups. The first group (AB group) experienced an initial 'music listening period', followed by a resting period. This sequence was reversed in the second group (BA group). Each period was two weeks in duration. Measurements of outcome were performed by a blind assessor at baseline and at two and four weeks after randomization. RESULTS: The effect of listening to music on auditory hallucinations, positive and negative symptoms, depression, and quality of life was not statistically significant. On self-report questionnaires, 40% of the subjects reported that 'listening to music was helpful' and 90% responded that they would positively consider listening to music when experiencing an auditory hallucination in the future. CONCLUSION: Listening to music did not result in a statistically significant treatment effect according to objective symptom scales. However, several subjects replied that it was 'helpful', implying that it may be useful as an adjunctive treatment for patients suffering from refractory auditory hallucinations.

A Case of Sweet's Syndrome in a Patient with Liver Cirrhosis Caused by Chronic Hepatitis B / 대한소화기학회지

Sweet's syndrome (SS), also known as acute febrile neutrophilic dermatosis, is characterized by the sudden onset of painful erythematous skin lesions together with fever and neutrophilia. SS can be associated with several disorders, such as malignancy, autoimmune disease, and infections. However, SS associated with liver cirrhosis is uncommon. We report a case of SS in a patient who was diagnosed with liver cirrhosis caused by chronic hepatitis B.

Shifting in Seroprevalence of HBsAg and Anti-HCV during Recent 10 Years in Adults Resident in Daegu and Gyeongbuk Province / 대한소화기학회지

BACKGROUND/AIMS: There have been only few studies on the population-adjusted seroprevalence of HBV and HCV and on the change of them for more than 10 years in Korea. Therefore, this study was performed to evaluate them at a single health center in Daegu and Gyeongbuk province considering the population composition ratio. METHODS: We analyzed the seromarkers of HBV and HCV of 6,237 randomly sampled adults who had received health screening at the health promotion center in Dongsan hospital during the periods from year 1997 to 1999 (Period A) and from 2007 to 2009 (Period B). RESULTS: The seroprevalences of HBsAg, anti-HBs, anti-HBc and anti-HCV were 4.8%, 70.2%, 47.4%, and 0.5%, respectively. There is no difference in the seroprevalence of HBsAg between period A and B. However, downward tendency of prevalence through A to B from 6.8% to 4.5% could be found in 40s, and upward tendency from 4.7% to 6.8% in 50s. As for the seroprevalence of anti-HCV, although there was no difference through A to B, for 50s, it decreasd from 2.0% to 0.3% (p=0.007). However, for 60s, it increased as much as decreasd for 50s. CONCLUSIONS: The seroprevalence of HBsAg in Daegu/Gyeongbuk province was 4.8% and showed no difference through the time period of 10 years. The seroprevalence of anti-HCV was 0.5% and also showed no difference through the time periods.

Recognition of Musical Nuance in Patients with Schizophrenia / 신경정신의학

OBJECTIVES: Emotion perception deficit has long been suggested to be one of the core features of schizophrenia. Although there have been several studies examining responses to facial expressions, few studies addressed music emotion recognition. The aim of this study was to examine the difference in emotion recognition in music between normal subjects and patients with schizophrenia. METHODS: Twenty pieces of music were presented to 43 patients with chronic schizophrenia and 82 healthy controls. The set of music consisted of ten pieces of sad music and ten pieces of cheerful music. The subjects were asked to answer whether each piece of music was sad or cheerful. RESULTS: The correct response rate of music emotion recognition was lower in patients with schizophrenia compared with that in healthy controls (76.67+/-19.03% vs. 93.54+/-8.18%, p<0.001). When subgroup analyses was done by type of music ('sad' or 'cheerful'), patients showed a significantly lower correct response rate in recognizing both sad and cheerful emotion in music than healthy controls (sad emotion : 65.12+/-31.15% vs. 91.95+/-15.27%, cheerful emotion : 88.0+/-16.83% vs. 95.12+/-8.64%). The significant correlations between the clinical symptom severity of schizophrenia and music emotion recognition were not found to be. CONCLUSION: The results suggest that patients with schizophrenia might have difficulties in recognizing musical nuances.

Erratum: Risk Factors Influencing Decline of Residual Renal Function in Patients on Continuous Ambulatory Peritoneal Dialysis / 대한신장학회지

No abstract available.

Sequential Changes of CX3CR1 in Dorsal Root Ganglion in a Rat Model of Lumbar Disc Herniation

OBJECTIVE: To investigate the pain-related behaviors and the changes of CX3CR1 expression in the dorsal root ganglion (DRG) in a rat model of lumbar disc herniation. METHOD: A total of 90 male Sprague-Dawley rats were used. A laminectomy was performed to expose left L5 nerve roots and corresponding DRG. Autologous nucleus puplosus was implanted on the left L5 nerve root proximal to the DRG without mechanical compression. Sham operation was also done with the same procedure as mentioned above. Thermal hyperalgesia and mechanical allodynia were assessed at 1, 5, 10, 20 and 30 days after surgery. Real time PCR and immunohistochemistry after behavioral test were performed. RESULTS: In the lumbar disc herniation rats, significant reduction of thermal withdrawal latency indicating thermal hyperalgesia was shown on the ipsilateral hindpaw on postoperative day 1 (p<0.01) and peaked on day 10 (p<0.05) and maintained throughout day 30 (p<0.05). The reduction of mechanical allodynia threshold, indicating mechanical allodynia, was observed on the ipsilateral hindpaw on postoperative day 1 (p<0.01) and continued throughout day 30 (p<0.01). Real time PCR showed the decrease in mRNA expression of CX3CR1 in the ipsilateral DRG on day 1 (p<0.05) and the significant increase on day 20 (p<0.05). The immunoreactivity for CX3CR1 was also increased in ipsilateral DRG on day 10 and 20. CONCLUSION: These data suggest that lumbar disc herniation induces thermal hyperalgesia and mechanical allodynia and upregulates the expression of CX3CR1 in dorsal root ganglion. Expression of CX3CR1 might be associated with subacute neuropathic pain after intervertebral disc herniation.

Risk Factors Influencing Decline of Residual Renal Function in Patients on Continuous Ambulatory Peritoneal Dialysis / 대한신장학회지

PURPOSE: Preservation of residual renal function (RRF) after initiation of peritoneal dialysis (PD) is beneficial for patient survival. It is unclear that same risk factors of pre-dialysis chronic kidney disease (CKD) patients affect RRF in PD patients. This study was aimed to evaluate factors affecting RRF after commencement of PD. METHODS: Data from 80 patients commencing CAPD at Kyungpook National University Hospital between January 2001 and December 2008 were retrospectively collected. After PD commencement, biochemical and clinical data at baseline (1 month), 6, and 12 month were obtained. RRF was calculated as the average of creatinine clearance and urea nitrogen clearance from 24-hour urine collection and normalized with body surface area and mean RRF decline rate was calculated by dividing RRF difference between baseline to 12 month by period. RESULTS: Mean RRF decline rate (mL/min/1.73m2/month) was negatively correlated with left ventricular posterior wall thickness (LVPWT) (R2=0.097, p=0.023) and proteinuria (R2=0.126, p=0.003), whereas positively correlated with hematocrit (R2=0.076, p=0.013) at baseline. CONCLUSION: Decline of RRF during a year after commencement of PD was associated with baseline proteinuria and LVPWT.

Technique survival in peritoneal dialysis: A single-center experience / 대한내과학회지

BACKGROUND/AIMS: Continuous ambulatory peritoneal dialysis (CAPD) is an established treatment in patients with end-stage renal disease (ESRD), and innovations in the connection system have improved the survival of peritoneal dialysis patients over the last two decades. We investigated the outcome of CAPD over a 15-year period at our institution. METHODS: Patients who underwent peritoneal dialysis since 1994 were recruited retrospectively. Patients younger than 15 years at the initiation of CAPD and those who had less than 1 month of follow-up or missing data were excluded. The technique survival rate and causes of technique failure were evaluated. RESULTS: In all, 608 CAPD patients (342 males, 56.3%) were analyzed using the Kaplan-Meier method and log-rank test. The mean age at the start of CAPD was 50.7+/-15.1 years and the mean duration of CAPD was 50.2+/-41.5 months. The most common primary renal disease was diabetes (39.6%), followed by chronic glomerulonephritis (37.2%) and hypertension (13.0%). The 1-, 3-, 5-, and 10-year death-censored technique survival rates were 97.3, 91.7, 82.8, and 67.5%, respectively. Sex or diabetic status did not affect the technique survival rate. Patients younger than 60 years at the start of CAPD had a better technique survival than older patients (p=0.005). The main cause of technique failure was peritonitis (71.6%), followed by mechanical malfunction (10.5%), ultrafiltration failure (7.4%), and inadequate dialysis (6.3%). CONCLUSIONS: Complicating peritonitis was the most common cause of CAPD technique failure at our center. To reduce the technique failure in high-risk groups, more intensive management is needed.

The Efficacy and Safety of Endoscopic Submucosal Dissection in Colorectal Neoplasms: Single Center Study / 대한소화기내시경학회지

BACKGROUND/AIMS: Endoscopic submucosal dissection (ESD) is not commonly used in the colorectal area because of technical difficulty and due to the characteristics of the organ. We therefore wanted to determine the efficacy and safety of endoscopic submucosal dissection in colorectal neoplasms. METHODS: Colorectal tumor lesions resected by ESD in a single medical center were analyzed retrospectively. RESULTS: A total of 47 patients were treated for 50 lesions. Mean age was 64.3+/-9.8 (43~85) years. Laterally spreading tumors were the most common type (44, 88%) followed by Is+IIa type tumors (6, 12%). The en bloc resection rate was 76% and the complete resection rate was 74%. The mean procedure time was 81.1+/-44.7 (20~180) minutes. The mean size of resected specimen was 26.9+/-10.4 (10~50) mm. The histological diagnosis determined that 24 lesions (48%) were tubular adenoma, 18 lesions (36%) were intramucosal cancer, 7 lesions (14%) were sm1 cancer and 1 lesion (2%) was over sm2 cancer. Bleeding occurred in 6 (12%) and perforations in 13 (26%) of the patients and all were treated successfully by endoscopic or conservative treatment. The concordance rate of pre and post ESD pathological diagnosis was only 47%. CONCLUSIONS: ESD is a feasible technique for treating superficial colorectal tumors with a high complete resection rate, minor invasiveness, and a high safety rate. In addition, ESD might be useful in establishing the complete pathological evaluation of colorectal epithelial neoplasm.

Acute pancreatitis complicated by acute renal failure successfully treated with peritoneal dialysis / 대한내과학회지

The mortality of acute pancreatitis complicated by acute renal failure (ARF) remains high. Among several therapeutic modalities, peritoneal dialysis (PD) has advantages due to its ability to remove toxic materials in the peritoneal exudate as well as urotoxic substances in the blood. We report successful treatment with PD in a patient with acute pancreatitis and ARF. A 41-year-old heavy drinker was admitted due to acute pancreatitis complicated by ARF. A therapeutic plan of PD was designed. A Tenckhoff PD catheter was used, considering its lower potential for infection compared to conventional catheters. The frequency of PD was set at 8 times per day, considering the catabolic state in pancreatitis. The clinical symptoms and biochemical parameters showed remarkable improvement during the follow up period. In conclusion, PD is one of the effective treatment modalities for treating ARF in patients with pancreatitis.

A Case of Exogenous Lipoid Pneumonia after Ingestion of Squalene in Patients with Achalasia / 결핵및호흡기질환

Exogenous lipoid pneumonia (ELP) is a chronic inflammatory reaction of the lungs resulting from the aspiration of vegetable, animal or mineral oils. Squalene, is a derivative of shark liver oil that is taken as a traditional remedy in some Asian countries, and is used widely also in cosmetics. Similar to the symptoms in most cases of oil aspiration, the symptoms of squalene-induced lipoid pneumonia are either absent or nonspecific. Hence, the disease is generally detected incidentally. Although many cases with predisposing factors have been reported, ELP with achalasia is quite rare. We report a 47-year old woman with achalasia who developed ELP after ingesting squalene. The patient was treated successfully by supportive care and surgical treatment of the achalasia.

A Case of Primary Mucinous Cystadenocarcinoma / 영남의대학술지

Primary retroperitoneal mucinous cystadenocarcinoma is a very rare malignancy, and little is known concerning its pathogenesis, optimal treatment, and prognosis. A 29-year-old pregnant woman (21 weeks) presented with abdominal discomfort. CA 19-9, CA 125, and CEA were normal. Abdominal CT scanning revealed a 19x15x13 cm retroperitoneal tumor. Exploratory laparotomy and tumor excision were performed. Mucinous retroperitoneal implants were removed as completely as possible. Histologically, the tumor showed focal areas of capsular invasion, but free resection margins. The uterus and both ovaries were normal in appearance. No adjuvant therapy was pursued. Six months later, peritoneal and bilateral ovarian metastases were discovered.Hence, we report the details of this case of primary retroperitoneal mucinous cystadeno-carcinoma and present a review of the literature.