Impact of Antibiotic Prophylaxis on Infection Rate after Endoscopic Ultrasound Through-the-Needle Biopsy of Pancreatic Cysts: A Propensity Score-Matched Study

Background: Despite weak evidence, antibiotic prophylaxis prior to endoscopic ultrasound-guided through-the-needle biopsy (EUS-TTNB) of pancreatic cystic lesions (PCLs) is routinely used in clinical practice. We aim to compare a group of patients treated with antibiotics before EUS-TTNB of PCLs and a group who did not undergo antimicrobial prophylaxis. Methods: Out of 236 patients with pancreatic cystic lesions referred to two high-volume centers between 2016 and 2021, after propensity score matching, two groups were compared: 98 subjects who underwent EUS-TTNB under antibiotic prophylaxis and 49 subjects without prophylaxis. Results: There was no difference in terms of baseline parameters between groups. Final diagnosis was serous cystadenoma in 36.7% of patients in the group not treated with prophylaxis and in 37.7% of patients in the control group, whereas IPMN and mucinous cystadenoma were diagnosed in 3 (6.1%) and 16 (32.6%) versus 6 (6.1%) and 32 (32.6%) patients in the two groups, respectively (p = 0.23). Overall, the adverse event rate was 6.1% in the group not treated with antibiotic prophylaxis and 5.1% in the control group (p = 0.49). Only a single infectious adverse event occurred in each group (p = 0.48). The diagnostic yields were 89.7% and 90.8% in the two groups (p = 0.7), and the diagnostic accuracy rate was 81.6% in both groups (p = 1.0). Conclusions: Prophylactic antibiotics do not seem to influence the risk of infection, and their routine use should be discouraged.

DIAGNOSTIC ROLE OF COMPRESSION SONOELASTOGRAPHY IN MULTIPARAMETRIC ULTRASOUND INVESTIGATION IN THE DETECTION OF BENIGN OVARIAN FORMATION

Properly diagnosed benign ovarian tumors are a condition for optimal treatment tactics. Qualitative assessment of signs detected by multiparametric ultrasound, including compression elastography, is highly effective in the differential diagnosis of benign ovarian tumors. Our study became especially relevant for women in the reproductive period, because the correct diagnosis influenced the choice of surgical treatment in order to preserve the ovarian reserve. A comprehensive radiological study of 51 women with benign ovarian tumors was performed. The age of patients averaged 37.3 ± 8.7 years. In the structure of benign ovarian tumors, the frequency of serous cystadenoma was 31.38%, serous superficial papillomas - 25.49%, mucinous cystadenoma - 17.65%, mature teratomas - 15.68%, fibroma - 9.8%. Ultrasound was performed on a HITACHI ALOCA ARIETTA 70 using a cavitary multifrequency sensor with a frequency of 7.5-10 mHz and a sector sensor with a frequency of 2-5 mHz. The article analyzes the detailed sonographic picture of these formations in B-mode, Doppler mode and compression sonoelastography mode. Color and energy Doppler mapping techniques, as well as pulsed Doppler mode, which gave a quantitative characterization of blood flow, were used to study blood vessels. Vessel localization was determined using color Doppler mapping, and detailed qualitative assessment of blood flow loci was determined using energy Doppler. For all types of benign ovarian formations, a qualitative feature was determined - elastotype on the Ueno scale and stiffness index - Strain Ratio (coefficient of deformation) - a quantitative indicator. It was found that serous and mucinous cystadenomas belong to 0 and I elastotype on the Ueno scale, the papillary component of serous superficial papillomas was mapped with I and II elastotype, fibroids mainly belonged to II and III elastotype, and mature teratomas - to IV end V elastotype. Quantitative deformation rate for all benign ovarian tumors ranged from 0,63 to 24,9. Thus, the cardiac index of stiffness in serous cystadenomas was 0.92 ± 0.46, and in mature teratomas - 16.7 ± 8.4. The increased density of the latter in comparison with other representatives of benign formations can be explained by the presence in their structure of such elements as fibroblasts, bundles of spindle-shaped cells and bundles of collagen fibers (fibroids), bone and cartilage (mature teratoma). In addition to all the above research methods, the mobile application IOTA ADNEX 2014 was used, which helped to calculate the risk of malignancy. This is a simple calculator, which loads the data of the ultrasound examination, the patient's age, the level of CA-125. Our results showed that ultrasound examination of ovarian tumors is an accurate and highly informative method for stratification of risks according to the O-RADS classification. For stratification and the ultrasound risk management system, the O-RADS system was guided by consensus guidance from the American College of Radiology, which reduces or eliminates ambiguity in the interpretation of data in ultrasound protocols and provides a more accurate definition of ovarian malignancy. The O-RADS working group includes 5 categories: O-RADS 0 - incomplete examination score, O-RADS 1 - normal unchanged premenopausal ovary, O-RADS 2 - almost always benign (risk of malignancy - <1%), O-RADS 3 - the presence of education with a low level of malignancy - from 1 to 10%, O-RADS 4 - medium risk of malignancy - from 10 to 50% and O-RADS 5 - education with a high level of malignancy -> 50%.

A case of Pseudomyxoma Peritonei of an unexpected origin

Background Pseudomyxoma peritonei (PMP) is a complex and partially understood disease defined by mucin deposits in the peritoneal cavity, mostly of appendiceal origin caused by the rupture of a mucocele often containing Low or High grade Appendiceal Mucinous Neoplasm (LAMN/HAMN). Other origins include primitive ovarian mucinous cystadenoma or cystadenocarcinoma almost always with an associated teratoma, but to our knowledge no case of ovarian teratomatous appendiceal-like mucocele with LAMN has been reported as a cause of PMP. Case presentation A 25-year old female with infertility was diagnosed with an isolated left ovarian tumor in a context of PMP. Histological examination revealed an ovarian teratoma containing an appendiceal-like structure with mucocele and LAMN, without any associated lesion of the appendix on full histological analysis. Molecular characterization of the ovarian lesion showed co-KRAS and GNAS mutations, as described in PMP of appendiceal origin, while only KRAS mutations are reported in primitive ovarian mucinous tumor. Conclusions Detection of co-KRAS and GNAS mutations in our case of ovarian teratomatous appendiceal-like mucocele with LAMN shows that when PMP derives from a mucinous ovarian lesion (with histological proof of none-appendiceal involvement), it is probably of a digestive teratomatous origin, emphasizing the need to actively search for tetatomatous signs in a context of ovarian PMP.

HYDATIC CYST OF THE LIVER OR HEPATIC MUCINOUS CYSTADENOMA

Mucinous cystadenomas of the liver are rare cystic neoplasms, often mistaken for simple cysts or hydatid cysts of the liver. They are generally benign tumors, often discovered incidentally on imaging or during independent surgeries. Despite their tendency to grow slowly, mucinous cystadenomas of the liver can reach symptomatic dimensions. And given their potential for malignant transformation into mucinous cystadenocarcinomas, a misdiagnosis can have serious secondary consequences. We report the case of a 55-year-old woman with chronic right hypochondrium pain in whom a mucinous cystadenoma of the liver was accidentally discovered during surgery for hepatic hydatid cyst at the general surgery department at the ARRAZI Hospital - UHC Mohammed VI in Marrakech, Morocco.

A Case of Mucinous Cystadenoma Carcinoma

Introduction: Mucinous Cystadenoma carcinoma is a type of tumor in the cyst adenocarcinoma grouping it can occur in the breast as well as the ovary. Tumors are normally multiocular with various smooth thin-walled cysts. Within the cyst is found an emergence or cellular debris. Patient History: The female patient 63-year-old who was admitted to AVBRH on the date 21/05/2021 in the obstetric and gynae ward with a chief complaint of generalized weakness, loss of appetite, fever for 2 days 7 days ago, 2-3 fever spikes and burning micturition. All over investigation observed like blood and urine investigation, CT scan of the abdomen, histopathology then the final diagnosis is confirmed as mucinous Cystadenoma carcinoma. Pharmacology: The patient was treated with antibacterial medicine, antibiotics, and diabetics, thyroxin stimulating drugs, etc. Management: Inj. Ceftriaxone 1gm 12 hourly, Inj.-piptaz 4.45 gm, 8 hourly, tab. Gimipride 0.5 mg with tab. Metformin 500 mg 12 hourly, tab. Thyrox 62.5 mcg, tab telmisartan 40 mg with tab. Chlorthalidone 12.512.5 mg 12 hourly, Inj.-pan 40 mg, 12 hourly, Inj.- Neomol 100 ml, and Tablet- nitrofurantoin 6 hourly. Nursing Management: Monitor the vital sign, monitor nutritional status and monitor random blood sugar. Maintained bed rest of patient, managed the pain level of the patient. The patient was assessed for risk of bleeding. Conclusion: The patient was admitted to the hospital with the chief complaint of generalized weakness, loss of appetite, fever for 2 days 7 days ago, 2-3 fever spikes and burning micturition. and the patient was admitted to AVBR Hospital in the obstetric and gynae ward, immediate treatment was started by a health team member and all possible treatments were given and now the patient's condition is satisfactory.

Laparo-endoscopic Approach for Large Ovarian Cyst in the Morbidly Obese: Case Report

We report a successful case of laparo-endoscopic single site total hysterectomy and bilateral salpingo-oophorectomy (LESS THBSO) using conventional laparoscopic instruments for a large ovarian cyst in a morbidly obese woman. A 58-year-old female with a BMI of 46kg/m2 complaint of abdominal distension. A pelvic ultrasound revealed a left ovarian cyst measuring 21.3 x 15.2 x 20.8 cm. The IOTA score is 3.5% and the RMI score was 51, suggesting a benign pathology. LESS THBSO was performed and the final histology was a benign ovarian mucinous cystadenoma. The patient recovered well with no postoperative complications. This case demonstrates that LESS is feasible for large ovarian cysts even in morbidly obese patients when appropriate cases are selected and when the patient is managed in a multi-disciplinary team.