Osteoma Originating from Mastoid Cortex.

Mastoid osteomas are very rare and defined as benign masses growing gradually in size. Temporal bone computed tomography is the examination of choice for their diagnosis and differentiation. Surgical resection is used to treat mastoid osteomas causing cosmetic deformity. Prognosis is good in cosmetic and curative aspects, and recurrences are very rare. No case of malign transformation has been reported. In this study, an adult patient who was treated because of a mastoid osteoma is presented with review of the current literature.

Effectiveness of Using Dual-source CT and the Upshot it creates on Both Heart Rate and Image Quality.

BACKGROUND: Early detection of coronary artery disease (CAD) is important because of the high morbidity and mortality rates. As invasive coronary angiography (ICA) is an invasive procedure, an alternative diagnostic method; coronary computed tomography angiography (CTA), has become more widely used by the improvements in detector technology. AIMS: In this study, we aimed to examine the accuracy and image quality of high-pitch 128-slice dual-source CTA taking the ICA as reference technique. We also aimed to compare the accuracy and image quality between different heart rate groups of >70 beates per minute (bpm) and ≤70 bpm. STUDY DESIGN: Retrospective cross-sectional study. METHODS: Among 450 patients who underwent coronary CTA with the FLASH spiral technique, performed with a second generation dual-source computed tomography device with a pitch value of 3.2, 102 patients without stent and/or bypass surgery history and clinically suspected coronary artery disease who underwent ICA within 15 days were enrolled. Image quality was assessed by two independent radiologists using a 4-point scale (1=absence of any artifacts- 4=non-evaluable). A stenosis >50% was considered significant on a per-segment, per-vessel, and per-patient basis and ICA was considered the reference method. Radiation doses were determined using dose length product (DLP) values detected by the computed tomography (CT) device. In addition, patients were classified into two groups according to their heart rates as ≤70 bpm (73 patients) and >70 bpm (29 patients). The relation between the diagnostic accuracy and heart rate groups were evaluated. RESULTS: Overall, 1495 (98%) coronary segments were diagnostic in 102 patients (32 male, 70 female, mean heart rate: 65 bpm). There was a significant correlation between image quality and mean heart rate in the right coronary artery (RCA) segments. The effective radiation dose was 0.98±0.09 mili Sievert (mSv). On a per-patient basis, sensitivity, specificity, and positive and negative predictive values were 93.8%, 88.8%, 93.8% and 88.8%, respectively. These values were also similar in per-vessel and per-segment basis. Two different groups categorized by mean heart rate had almost similar results in terms of the diagnostic power of dual-source CTA. CONCLUSION: CTA with a high pitch value is a reliable, non-invasive diagnostic method that can CAD with low radiation doses not only in patients with a heart rate below 70 bpm, but also in patients with higher heart rates.

Bilateral Nasolabial Cyst as a Rare Case Report.

The etiology, clinical features, and treatment of an extremely rare case of a bilateral nasolabial cyst have been evaluated in this report. A 60-year-old female presented to our clinic with a pain-free swelling above the upper lip for a year and obstruction of the left nasal cavity for two months. On undergoing a physical ENT examination, she showed bulging of both nasal fossae and effacement of the bilateral nasolabial groove with a fluctuating smooth mass. A paranasal sinus CT scan showed a smooth, ovoid mass of 20×13 mm at the right side and 26×22 mm at the left side occupying the floor of the nasal fossa and restricted to the soft parts of the premaxillary region, without any bony destruction. The patient underwent surgical excision under general anesthesia via sublabial approach. Histopathology confirmed the diagnosis of bilateral nasolabial cyst. The patient was asymptomatic during 18-month of postoperative follow-up. Bilateral nasolabial cysts should be considered in the differential diagnosis of cystic masses of the nasal vestibule and deformities of the premaxillary region. Although endonasal endoscopic cyst marsupialization is a relatively new treatment, surgical resection with the sublabial approach is the treatment of choice.

The role of ultrasonography in the imaging of body packers comparison with CT: a prospective study.

PURPOSE: This study investigated the sonographic properties of drug packets containing narcotic drugs and the diagnostic role of ultrasonography in detecting body packing in comparison with CT. METHODS: Forty-five suspects admitted to our hospital for diagnosis and management were routinely evaluated by non-contrast CT for the presence of drug packets. A single radiologist blind to CT data independently performed the abdominal ultrasonographic scans. RESULTS: Thirty-five of 45 suspects were carrying packets. In positive cases, two types of packets with different properties were noted. Twenty-eight cases had type 1 packets (solid form drug) and 7 had type 2 packets (liquid form cocaine). The sensitivity, specificity, positive, and negative predictive values of ultrasonography for detecting drug packets were 91%, 70%, 91%, and 70%, respectively. Ultrasonography accurately determined the presence or absence of packs in 39 of 45 suspects. CONCLUSION: Ultrasonography was found to have a high sensitivity but a low specificity in suspected cases. A negative ultrasonography cannot rule out the diagnosis of body packing. However, it may be preferred as the initial imaging method or for follow-up of suspected cases as a radiation-free, easy-to-use, and inexpensive technique.

Focal nodular hyperplasia vs. hemangioma: computed tomography and magnetic resonance imaging findings.

Focal nodular hyperplasia (FNH) and hemangioma are benign and generally asymptomatic hepatic tumors. With distinctive imaging findings on dynamic computed tomography (CT) and magnetic resonance imaging (MRI), differentiation of these benign hepatic tumors from metastases can be made. We described imaging findings of these hepatic lesions in a 57-year-old man who presented with rectal adenocarcinoma for staging.