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Biomedical subjects

A Memis

Publications and source records attributed to A Memis.

At least 37 records · Page 2Linked to original sources
PubMed1999

Multiple intracranial aneurysms in polyarteritis nodosa: MRI and angiography.

In polyarteritis nodosa involvement of the central nervous system is infrequent; small cerebral infarcts are the most common neuroradiological finding. We report a 10-year-old boy with polyarteritis nodosa and intracranial haemorrhage. MRI showed an intracerebral haemorrhage. Angiography revealed two peripheral aneurysms in the posterior cerebral circulation, previously reported on only two occasions, and multiple microaneurysms in the hepatic, renal, mesenteric and even the lumbar arteries.

Cerebral Angiography↗
PubMed1999

Primary soft tissue hydatid disease: report of two cases with MRI characteristics.

Hydatid disease of the soft tissues forms a rare mass lesion of the extremities. Two cases of primary hydatid disease in soft tissues are presented with MR imaging findings. A cystic mass with multiloculated or multicystic appearance was identified on MR images in both cases. The lesions were surrounded by a rim with two layers representing a collageneous and a vascularized pericyst. The contrast-enhanced images demonstrated the vascularized component of the wall clearly in the first case. In diagnosis of hydatid disease and in its differentiation from other cystic lesions of the extremities, we think that the described MR appearances can be used confidently.

Adult↗
PubMed1999

Varix of the inferior pulmonary vein: computed tomography and magnetic resonance angiography findings.

A 37-yr-old male presented with a 2-week history of intermittent episodes of mild haemoptysis. Computed tomography and magnetic resonance imaging revealed a varix of the inferior pulmonary vein. The diagnosis was confirmed using magnetic resonance angiography and conventional angiography. This condition is relatively rare, and few cases have previously been demonstrated by means of magnetic resonance imaging and angiography.

Adult↗
PubMed1998

The watershed between right and left hepatic artery territories: findings on CT scans after transcatheter oily chemoembolization of hepatic tumors. A preliminary report.

The goals of this study were to delineate the boundary between the right and left hepatic artery territories by computed tomography (CT), to compare this boundary with the middle scissura of Couinaud's segmental anatomy, and to discuss the clinical implications of these findings. The 18 patients who underwent transcatheter oily chemoembolization (TOCE) of liver tumors via the right or left hepatic artery, were examined with an immediate postembolization CT scan. We measured the orientation of the watershed line between the right and left hepatic artery territories and the orientation of the middle scissura on other available sectional imaging modalities, and then compared the middle scissura with the arterial watershed line. A part of segment IV was fed by the right hepatic artery in two of 18 (11.1%) patients. Moreover, one of 4 segment IV lesions was embolized via right hepatic artery infusion. Thus, in 11.1% of cases there was no coincidence between the arterial watershed line and the middle scissura. Some segment IV lesions may be fed and therefore embolized only via right hepatic artery infusion in TOCE for liver tumor.

Adult↗
PubMed1998

Transcatheter arterial embolization of internal mammary artery in a hepatocellular carcinoma with abdominal wall invasion.

Transcatheter arterial embolization (TAE) is alternatively employed to surgical resection in the management of hepatocellular carcinoma (HCC). TAE through the hepatic artery is sometimes insufficient since the blood supply to HCC may be from the collateral vessels as well. We report a case of HCC with abdominal wall invasion who underwent TAE through the right internal mammary artery after insufficient embolization of the tumor through the hepatic artery.

Abdominal Muscles↗
PubMed1997

Liposarcoma of soft tissue: MRI findings with pathologic correlation.

OBJECTIVE: To evaluate the MRI findings of liposarcomas of different histologic types and correlate these with the histopathologic features. DESIGN: The MR images of seven liposarcomas were reviewed retrospectively to assess the tumor size, location, margination, signal characteristics and enhancement patterns in different histologic types. PATIENTS: Seven liposarcomas comprising three well-differentiated, two myxoid and two pleomorphic types were evaluated. RESULTS AND CONCLUSION: All tumors showed well-defined and mostly lobulated margins. The well-differentiated liposarcomas were composed mainly of fat with septations or nodules, were hyperintense on T2-weighted images, and demonstrated faint enhancement or no enhancement following intravenous contrast. Myxoid liposarcomas were homogeneous or mildly heterogeneous and a pseudocapsule was present in one case. Pleomorphic types showed a markedly heterogeneous internal structure. Both myxoid and pleomorphic lesions-showed moderate or marked heterogeneous enhancement after contrast administration. Well-differentiated liposarcomas may be differentiated from other types of the tumor by their largely lipomatous appearance. The malignancy grade increases in parallel with tumor heterogeneity and contrast enhancement.

Adult↗
PubMed1997

Erectile dysfunction in premature ejaculation.

Between October 1993 and December 1995, 45 patients with premature ejaculation were included in this study. The patients were divided into two groups etiologically, as having primary or secondary ejaculation. After a complete laboratory evaluation all patients underwent papaverine tests color Doppler ultrasonography pharmacocavernosometry-cavernosography and consequently organic etiology were investigated. Venous leakage was found in 5 (22,7%), arterial or mix insufficiency in 2 (9%) of the patients with primary premature ejaculation. In secondary premature ejaculation group, venous leakage was encountered in 9 patients (39,1%), arterial insufficiency in 2 patients (8,6%). In conclusion, investigation of organic etiology for the patients with premature ejaculation, particularly with secondary premature ejaculation, seems to be beneficial for correct diagnosis.

Adult↗
PubMed1997

The value of cavernous body biopsy in evaluating of impotent men.

Rapid advances in the basic understanding of the anatomy, physiology and pharmacology of penile erection have drastically changed the clinical approach to patients with erectile dysfunction. To evaluate the value of microscopic architecture of the corpora cavernosa, we examined cavernous body biopsies taken during penile prosthesis implants. We studied on 12 impotent patients 25 to 67 years old who underwent implantation of a penile prosthesis. The biopsy was stained with H&E (Hematoxylin and Eosin) for general architecture, Masson Trichrome for collagen distribution and EVG for elastic fibers. Except 3 cases no pathological changes were determined at H&E staining. At collagen staining, roughly increased collagen distribution was determined in all cases. There were no appreciable differences in distribution of elastic fibers. In conclusion our data demonstrate that cavernous body biopsy is of limited value to determine etiologic factors in patients with erectile dysfunction.

Adult↗
PubMed1996

Magnetic resonance imaging of intramuscular haemangiomas with emphasis on contrast enhancement patterns.

Fifteen patients with intramuscular haemangiomas were evaluated with magnetic resonance imaging (MRI). Phleboliths were demonstrated by plain films or CT in six cases, which are characteristic for haemangioma. MRI showed intermediate or slightly high signal intensity on T1-weighted spin-echo images, and overall extremely bright signal on T2-weighted images. Twelve patients had a heterogeneous signal intensity and serpentine pattern on all sequences. A draining vessel was identified in a patient with histologically confirmed diagnosis of arteriovenous type of hemangioma. In three cases with localized small lesions, the MR appearance on T1 and T2-weighted conventional spin-echo sequences was homogenous. Two of the three showed a serpentine pattern on contrast enhanced images. In a patient with a soft tissue mass suspected of representing a haemangioma, MRI may provide more specific information, regarding the characteristics and extent of the lesion than other imaging techniques. In small localized lesions, contrast enhanced MRI may also offer significant advantage, making the identification of serpentine pattern possible which is a characteristic morphological feature of haemangioma.

Adolescent↗
PubMed1994

Petrous apex mucocele: high resolution CT.

Mucocele of the petrous apex is very rare, only three cases having been reported. Since this area is inaccessible to direct examination, imaging, preferably high resolution computed tomography (HR CT) is essential. We report a case showing an eroding, non enhancing mass with sharp, lobulated contours, within the petrous apex. The presence of a large air cell on the opposite side suggested a mucocele.

Abducens Nerve↗
PubMed1993

Persistent müllerian duct syndrome.

Persistent müllerian duct syndrome is a rare form of pseudohermaphroditism, in which well developed müllerian structures are present in an otherwise normal male, possibly resulting from absence of müllerian duct inhibiting factor. Two cases of the syndrome are presented. The diagnosis, as in most cases, was confirmed at herniorrhaphy or exploration for undescended testis.

Adolescent↗
PubMed1992

Case report 717. Osteodysplasty (Melnick-Needles syndrome).

Herein reported is a patient with the typical osseous features of osteodysplasty, Melnick-Needles type, except for changes in the hands. Shortening of the distal phalanges is one of the reported features of this syndrome, while elongated phalanges are characteristic of frontometaphyseal dysplasia. The elongated proximal and middle phalanges of the hands in our case are similar to those changes found in frontometaphyseal dysplasia, suggesting some similarity in these two disorders. However, it must be remembered that other radiological features described in the text establish the entity of Melnick-Needles syndrome.

Bone and Bones↗