Objective: To determine the diagnostic accuracy of DWI in differentiating benign and malignant meningiomas keeping histopathology as gold standard. Methods: This was a descriptive analytical study conducted at Radiology Department, DUHS/Dr. Ruth K. M. Pfau Civil Hospital Karachi, from August 2016 to March 2018. It included152 patients clinically suspected of meningioma on conventional neuroimaging. Imaging features of DWI were compared with histopathology findings. The diagnostic accuracy of DWI was calculated in terms of sensitivity, specificity, accuracy, PPV and NPV using histopathology as gold standard. Results: There were 59 male and 93 female patients with mean age of 55.38±9.8 years. Mean duration of sign and symptoms was 5.67±2.57 months. Out of 152 patients, 117(77%) and 35(23%) were differentiated into benign and malignant meningiomas respectively by DWI while 135(88.82%) and17(11.18%) patients were diagnosed respectively on histopathology. The sensitivity, specificity, PPV, NPV and accuracy of DWI of 84.4%, 82.3%, 97.4%, 40%, and 84.2% respectively keeping histopathology as gold standard. Conclusion: DWI features along with calculation of ADC values is a reliable non-invasive technique for differentiating benign and malignant meningiomas. However the low negative predictive value necessitates the use of histopathology. doi: https://doi.org/10.12669/pjms.35.3.1011 How to cite this:Sohu DM, Sohail S, Shaikh R. Diagnostic accuracy of diffusion weighted mri in differentiating benign and malignant meningiomas. Pak J Med Sci. 2019;35(3):---------. doi: https://doi.org/10.12669/pjms.35.3.1011 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

A 33-year male with history of penetrating trauma to left upper chest in 2006, presented through Medical unit to Radiology Department with complain of hemoptysis. Chest X-ray showed a soft tissue lesion in left upper lobe with a linear metallic foreign body. Contrast enhanced CT scan of chest and later CTA was performed which showed a saccular aneurysm arising from mediastinal part of left common aortic artery surrounded by thrombosis with a cylindrical linear metallic foreign body. He was planned for endovascular repair with stenting which he could not afford due to financial constraints. He is currently on conservative follow up. Vascular lesions can be serious complications resulting from blunt or penetrating trauma, when presenting with hemoptysis due to pseudaoneurysms formation even after so many years of trauma.

Cerebral venous sinus thrombosis (CVST) has widely varied clinical and radiological manifestations ranging from asymptomatic minimal brain oedema to severe haemorrhagic infarcts associated with focal deficits, coma and even death. Cerebral venous sinus thrombosis presenting with lobar or subdural hematomas are rare and the cause may easily be overlooked. We present a case of CVST with an atypical radiological picture of intra-arenchymal, subdural and subarachnoid haemorrhage.

Aneurysmal bone cyst (ABC) is a locally destructive lesion of the bone rather than a true neoplasm. The pelvis is not an unusual site for an ABC; approximately 12% of cases occur in this location. We present a case of aneurysmal bone cyst (ABC) in ischiopubic ramus in a 22 years old male who presented with right inguinal swelling and pain. He was evaluated with X-ray and  Magnetic  Resonance Imaging (MRI) of pelvis. A review of literature regarding this rare site of ABC with radiological features is also described in this case report. ABC of ischiopubic ramus is an uncommon entity hence diagnosis of such  a  case  requires  proper  clinical, radiological and histopathological evaluation to rule out other differential diagnoses  of  an  expansile, osteolytic lesion. This will help in selecting a proper treatment plan.

Natural remedies are more acceptable in the belief that they are safer with fewer side effects than the synthetic ones. Herbal formulations have growing demand in the world market. The present work deals with the development & evaluation of the herbal anti-acne face wash containing aqueous extract of Luffa cylindrica seed oil, neem leaves (Azadirachta indica), Pumpkin. Although various topical herbal formulations for acne are available in the market, we propose to make pure herbal formulation without using any synthetic soap . The plants have been reported in literature having good anti-microbial, anti-oxidant & anti-inflammatory activity also and saponins present in the Luffa cylindrica seeds used as a base to form the soap. Prepared formulations were evaluated for various parameters like colour, appearance, consistency, washability, pH & spreadability. The formulation was compared with the marketed preparation.

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