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Primary mediastinal mesotheliomas are rare tumours. The mesothelial lining cells of the the pericardium are suggested as the most probable cells of origin. Most of these tumours appear either as a diffuse or nodular thickening of the pericardium that encase and even invade the heart. Localized mediastinal mesotheliomas are distinctly uncommon. We report the imaging findings of a solitary malignant mediastinal mesothelioma that presented mainly as a cystic anterior mediastinal mass. On chest radiography, the tumour appeared as a right paramediastinal soft tissue mass located adjacent to the right middle and lower lobes. On CT, a large, well-circumscribed, right anterior mediastinal mass with a central zone of fluid attenuation was observed. This mass had a thin, smooth wall of uniform thickness as well as a small component that demonstrated soft tissue attenuation. There was no plane of separation between the tumour and aorta/superior vena cava. At surgery the tumour could be dissected easily free from the pericardium and great vessels and it was removed totally. Histopathological examination of the tumour revealed a malignant epitheloid mesothelioma.

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The effects of unilateral testicular torsion on the blood flow of the contralateral testis were investigated. Fourteen adult male dogs were recruited. Seven dogs underwent unilateral testicular torsion of 4 h duration, and the other seven dogs had a control operation. Testicular blood flow was determined by colour Doppler ultrasonography before and after the testicular torsion. Bilateral orchidectomy was performed at the end of the study and histopathological changes were evaluated. Values of peak systolic velocity, end diastolic velocity, and resistive index were not statistically significant between ipsilateral and contralateral testes in the study group (p > 0.05). On comparison with the control group, blood flow in the contralateral testes showed no statistically significant difference (p > 0.05). Oedema and congestion were seen on ipsilateral testes in the study group. No histopathological changes were noted on the contralateral testes. Minimal oedema and congestion secondary to manipulation were found in the control operation testes. We conclude that unilateral testicular torsion does not decrease contralateral testicular blood flow as shown by colour Doppler ultrasonography.

Orbital involvement is a rare manifestation of multiple myeloma. Therefore, the correct diagnosis and appropriate management are usually difficult and generally require biopsy. We report a 60-year-old woman having multiple myeloma with orbital involvement. Right orbitozygomatic craniotomy was carried out and the mass lesion was removed. After the histological examination, the diagnosis of multiple myeloma was confirmed. The clinical course and the treatment modalities of this entity are discussed in view of the literature.

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Purpose To evaluate the possible effect of constipation on the acute urinary retention (AUR) after transrectal ultrasound-guided prostate biopsy (TRUS PB). Materials and Methods A total of 1,167 patients with prostate-specific antigen (PSA) >4 ng/mL and/or abnormal digital rectal examination underwent a standard 12 core transrectal ultrasound-guided prostate needle biopsy in our hospital and the findings were examined prospectively. Chronic constipation (CC) was defined according to the Rome IV criteria. All cases were well evaluated with respect to clinical-histopathological factors; International Prostate Symptom Score (IPSS), prostate volume, post-void residue, age, body mass index, histopathological inflammation, and AUR. Results The mean age of patients was 64.63±8.31 years, the PSA level was 11.60±16.83 ng/mL, and the prostate volume was 54.66±25.44 mL. In 265 cases (22.7%), CC anamnesis was present and AUR developed in 28 (2.4%) of the cases. In the multivariate analysis for the risk of developing urinary retention, prostate volume, pre-operative IPSS, and presence of CC requiring manual maneuvers to facilitate defecation were found to be risk factors (p=0.023, 0.010, and 0.001, respectively). Conclusions Our findings demonstrated that CC may be a critical factor in the prediction of AUR formation following TRUS PB.

ÖZ Keywords: ectopic testis, torsion, treatment GİRİŞEktopik testis, testisin normal iniş yolunun dışında; süperfisyal inguinal poş, penopubik bileşke, perine, uyluk iç kısmı, femoral bölge, pubik bölge, penisin dorsali ya da karşı skrotuma yerleşmesidir. Biz de bu makalede orşiopeksi yapılan 7 yaşında sol ektopik yerleşimli non-palbabıl, torsiyone ve boyutları azalmış testis olgusunu sunmayı amaçladık. OlGu SunumuYedi yaşında erkek hasta, sol testisinin yerinde olmaması yakınması ile polikliniğimize ailesi tarafından tedavisi için getirildi. Genital muayenesinde; sünnet-li olduğu, sağ testisinin skrotal yerleşimli ve sağ testisinin boyutu ve kıvamının normal olarak değerlen-dirildi. Hastanın sol testisi palpe edilemedi ve sol hemiskrotumunun gelişmemiş olduğu gözlemlendi. Yapılan skrotal ultrason tetkikinde sol testis görüntü-lenemedi. Hastaya inguinal eksplorasyon önerildi.Yapılan inguinal explorasyonda femoral bölge yerleşimli ektopik testis saptandı. Testisin boyutu azalmış-tı ve funikulus spermatikus distalinde, kendi ekseni etrafında 180 derece dönmüş olduğu gözlemlendi. Bu kısımda funikulus spermatikus kalibrasyonunda incelme belirlendi (Resim 1). Testisin funikulus spermatikusu internal ring seviyesine kadar serbetlendi ve anatomik pozisyonda subdartos poşa yerleştirilip tespit edildi (Resim 2). TARTıŞmAErkek çocuklarda testisin en sık konjenital anomalisi inmemiş testis olup, insidansı yeni doğan döneminde %1,5-5,9 oranlarında olduğu ve ülkemizde okul çocukluğu döneminde inmemiş testis prevalansı %0,9 oranında olduğu bazı çalışmalarda bildirilmiştir (1,2) . Testislerin göçü sırasındaki inguinoskrotal inişi, androjen kontrolü altında gerçekleşmekte ve androjen üretiminde bozukluk veya hipotalamus-hipofizgonadal aksında bir aksaklık olması inmemiş testis