Retroperitoneal cysts, a rare surgical phenomenon, present diagnostic challenges due to their typically asymptomatic nature. A 62-year-old male presented with a 4-month history of abdominal distension and increased burping. Upon clinical examination, a soft, distended, nontender abdomen with a palpable mass extending from the epigastric region to 3 cm below the umbilicus was revealed. Imaging revealed a 14.6 cm × 15.8 cm × 16.4 cm nonenhancing retroperitoneal lesion, compressing the right ureter and causing mild right hydronephrosis. Multiple gall bladder calculi, an umbilical hernia, and lipomatous lesions associated with adrenal glands were also discovered. Laparoscopic retroperitoneal cystectomy, cholecystectomy, and umbilical hernia repair were performed. Intraoperatively, 150 ml ascitic fluid and 1200 ml cystic fluid were found. This case highlights the intricate clinical presentation of a retroperitoneal cyst, emphasizing the need for surgical exploration. Successful laparoscopic management contributes to the evolving understanding of optimal treatment strategies.

UNASSIGNED: Inflammatory myofibroblastic tumors are difficult to diagnose because of the lack of specific indicators. We describe a diagnostically challenging case of an inflammatory myofibroblastic tumor primary to the peritoneum.
UNASSIGNED: The patient was a 25-year-old male who presented at our hospital with lower abdominal pain. Computed tomography revealed a mass lesion 80 mm in diameter just above the bladder. This was suspected to be a bleeding tumor of the urachus. Since malignancy could not be ruled out, surgery was planned. This revealed a fragile tumor arising from the peritoneum. Following its removal, the tumor was diagnosed by histopathological analysis as an inflammatory myofibroblastic tumor.
UNASSIGNED: We describe a case of inflammatory myofibroblastic tumor primary to the peritoneum diagnosed by histopathology. Inflammatory myofibroblastic tumor should be considered in the differential diagnosis of abdominal wall and anterior bladder tumors.

Renal angiomyolipoma is a benign mesenchymal tumor composing adipose tissue, smooth muscle, and blood vessels. Despite being benign, the tumor sometimes can be aggressive with a locoregional and venous extension. Here, we present a case of a 48-year-old female who presented with a lump in the abdomen for two months, which was initially small and gradually increased in size associated with pain. Ultrasound of abdomen-pelvis showed ill-defined heterogeneous lesion arising from left kidney showing few hypoechoic and calcific focus within it. Contrast-enhanced computed tomography suggested an exophytic mass lesion with a central scar and calcification measuring 13 x 11 cm indicating renal cell carcinoma. Based on the benign nature and being well encapsulated, the patient was taken up for a left radical nephrectomy. However, the final histologic assessment concurred with renal angiomyolipoma.

OBJECTIVE: To report the treatment and clinical monitoring in patients with prostatic evanescent carcinoma at Hospital Carlos Andrade Marin.
METHODS: We reviewed the medical records of 148 patients undergoing by robot-assisted radical prostatectomy in Carlos Andrade Marin hospital. The cases reported between January 2016 to December 2018. The diagnosis was carried by taking a transrectal prostate biopsy with 12 cylinders. This samples are studied by the pathologist who reviews the radical prostatectomy surgery.
RESULTS: Three patients had prostatic evanescent carcinoma, which those cases showed Gleason 6 (3+3) prostate cancer. Two received neoadjuvant hormone therapy and the other patient presented minor tumor invasion in 1 out of 12 cylinders used during the biopsy. In the three cases, after the sample analysis, there was no residual tumor evidence. Therefore, they were classified as pT10.
CONCLUSIONS: In this study, the results obtained from the patients studied presents the incidence of prostatic evanescent carcinoma is 2%. The combination of these different factors such as clinical status, preoperative PSA, number of positive cylinders and the invasion percentage, additionally to the usage of neoadjuvant hormone therapy prior the radical prostatectomy can help to predict evanescent carcinoma of the prostate.

Aquatic products are one of the world\'s essential protein sources whose quality and safety are threatened by bacterial diseases. This study investigated the possible effects of bacterial infection on the main edible part, the muscle, in the case of crayfish infected with Citrobacter freundii. The histopathological analysis confirmed that crayfish was sensitive to C. freundii and muscle was one of the target organs. The transcriptome results showed impaired intercellular junctions, downregulation of actin expression, and inhibition of metabolic pathways. Furthermore, transcriptomic results suggest that C. freundii mainly affect muscle structure and nutrition. Subsequent validation experiments confirmed structural damage and nutrient loss in C. freundii infected crayfish muscle. Besides, the spoilage tests showed that C. freundii did not accelerate muscle spoilage and the bacteria had a limited impact on food safety. Therefore, although C. freundii may not be a specific spoilage bacterium, it still affects the edible taste and nutritional value of crayfish muscle. The findings of this study might contribute to further research on C. freundii infection and provide a warning about the adverse effects of bacterial infection on aquatic products.

Multiple primary malignant tumors (MPMTs) are rarely seen among the patients with malignant neoplasms. Moreover, the existence of five MPMTs in the same patient is an extremely rare phenomenon. In this case, a 42-year-old male patient developed five metachronous MPMTs within 16 years and the duration between each malignant tumor shortened with the progression of the disease. Multidisciplinary treatments were used on this patient and he fought against the cancers until the end of his life. Our report provides us with a new awareness of MPMTs, which should be considered when we come across with cancer patients who develop various unexplainable symptoms after the diagnosis of the first neoplasm.

Respiratory epithelial adenomatoid hamartoma (REAH) is a recently described entity consisted of benign glandular proliferations lined by pseudostratified respiratory epithelium. We report a case of a 22-year-old male patient with 7-year history of nasal obstruction and headache resulting from a huge left-sided nasal lesion. Computed tomography, magnetic resonance and biopsy were performed to make a provisional diagnosis of REAH originating from the left-sided inferior turbinate. The definitive diagnosis of REAH was made by histopathological examination of the removed mass. We also discuss the origin and differential diagnosis of these rare lesions.

Placement of an anterior maxillary implant has a risk of interfering with the nasopalatine canal in the maxilla. This case report presents one of our experiences of a nasopalatine duct cyst that developed in association with a dental implant treatment. A 45-year-old man received an implant in the maxillary left central incisor due to root fracture. Preoperative radiograph indicated no anatomical abnormalities. A postextraction immediate implant was placed, and radiographic examination after 28 months revealed an asymptomatic, oval-shaped radiolucency around the apex of the implant, seemingly in contact to the nasopalatine canal. The entire lesion was removed along with a part of the implant. Histopathologically it was diagnosed as nasopalatine duct cyst. Accidental contact with the nasopalatine canal during surgery may have induced development of the nasopalatine duct cyst. Careful planning based on preoperative computed tomography scan may prevent such complications.

Myxoid adrenocortical neoplasms are rare; to our knowledge, only 56 cases have been reported in the literature. Therefore, distinguishing benign from malignant cases is challenging. Although the histopathological features of myxoid adrenocortical neoplasia have been amply demonstrated, their imaging characteristics are yet to be reported. We describe here these characteristics for such a neoplasm. Our patient, a 70-year-old male, was found to have a 3-cm left adrenal incidentaloma through a non-enhanced computed tomography. Attenuation measurements were 22 Hounsfield units on precontrast imagery, and percentage enhancement washout was 92%. Magnetic resonance imaging showed no loss of signal intensity in T1-weighted out-of-phase images, but high signal intensity on T2-weighted and diffusion-weighted images. Left adrenalectomy was performed and the pathological diagnosis was confirmed as myxoid adrenocortical neoplasm. The imaging characteristics reported here will be beneficial to the differential diagnosis of myxoid adrenocortical neoplasms based upon image analysis and will help distinguish benign from malignant neoplasms.