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Biomedical subjects

R Baran

Publications and source records attributed to R Baran.

At least 109 records · Page 6Linked to original sources
PubMed1994

Pseudo-fibrokeratoma of the nail apparatus with melanocytic pigmentation: a clue for diagnosing Bowen's disease.

Bowen's disease of the nail apparatus is a protean condition where pseudo-fibrokeratoma associated with melanocytic pigmentation was the clue leading to the clinical diagnosis. Migration of melanocytes into the superficial layers of the matrix epithelium may be associated with the extension of the epidermal tumoral process, without necessitating a real melanocytic hyperplasia.

Aged↗
PubMed1994

Nail resembling cutaneous horn occurring after acral bone loss.

A patient with leprosy and an anesthetic left hand noted a hornlike nail on his index finger after recurrent trauma and infection had resulted in acral bone loss. This case illustrates the importance of an intact terminal phalanx in the formation of a normal nail plate.

Adult↗
PubMed1993

Reflex sympathetic dystrophy with prominent involvement of the nail apparatus.

After closed hand trauma, a 17-year-old boy had acute inflammatory changes that resembled bacterial whitlows of the third and fourth right fingers. Clearing of the inflammatory changes was followed by the development of cyanosis, hyperhidrosis, and roentgenographic evidence of patchy osteoporosis in the involved extremity. Findings of a biopsy specimen revealed that the inflammatory lesions in the proximal nail folds were caused by proliferation of capillary vessels embedded in edematous loose connective tissue. This is the first report of cutaneous histopathologic findings in the first stage of reflex sympathetic dystrophy, although similar features have been described in synovial and bone biopsy specimens of patients with reflex sympathetic dystrophy.

Adolescent↗
PubMed1993

Congenital isolated unilateral absence of right pulmonary artery.

A case is reported of isolated absence of the right pulmonary artery. The patient who suffered recurrent pulmonary infections was referred to our center after detection by an outward hospital of abnormalities on the chest radiography. In our centre the diagnosis was established by angiocardiography.

Angiocardiography↗
PubMed1993

Nail bleeding associated with neurological diseases: all that uncommon? Report of 3 cases.

We report 3 patients, without bleeding disorders, presenting with onychomadesis and focal haemorrhages at multiple proximal nail folds or in the nail tissue. In one of our patients it was possible to check the appearance of a drop of blood on each side, beneath the proximal nail fold when he pressed the pulp of the fingers of his previously fractured forearm on a hard surface. All patients had major peripheral or major peripheral and central neurological deficits, prior to the nail bleeding. Peripheral vascular dilatation produced by paralysis of the vasoconstrictors in the nail area slows the venous return in the dilated vessels, mainly in the proximal nail fold.

Adult↗
PubMed1993

Occupational acroosteolysis in a guitar player.

A case of occupational acroosteolysis in a 24-year-old classical guitar player is reported. Nail tenderness was the only manifestation of initial acroosteolysis, which was due to mechanical stress on the fingers. Radiographs showed initial resorption of the 2nd, 3rd and 4th finger of the left hand. The authors review the clinical and radiological features of acroosteolysis. The pathogenesis of acroosteolysis is discussed as well as the different diseases that may cause destructive changes of the distal phalangeal bones.

Adult↗
PubMed1992

Onychomatrixoma. Filamentous tufted tumour in the matrix of a funnel-shaped nail: a new entity (report of three cases).

Identical lesions of the nails were observed in three patients. The main signs were a yellow colouration along the entire length of the nail plate with splinter haemorrhages in its proximal portion, a tendency towards transverse overcurvature of the affected nails, and exposure of a matrix tumour after the nail had been avulsed and the proximal nail fold turned back. The nails signs were striking enough to lead to the clinical suspicion of a filamentous tufted tumour in the matrix of a funnel-shaped nail, an entity not previously described.

Aged↗
PubMed1992

Doubled nail of the thumb. A rare form of polydactyly.

Bifid thumb is a rare manifestation of polydactyly. The trait is autosomal dominant, but the expressivity is highly variable. It must be distinguished from apical dystrophy, a rare form of brachydactyly. Severe surgical procedures have been suggested for both functional and cosmetic reasons. Two families affected are described.

Adult↗
PubMed1992

[Diagnostic value of ELISA for determining the occurrence of antibodies to antigen A60 in active pulmonary tuberculosis].

IgG antibodies against the purified antigen 60 have been detected in the sera of 48 active, 12 inactive pulmonary tuberculosis patients and 46 tuberculosis free controls with ELISA. Diagnostic value of this test has been evaluated in the conditions of our country. The detection of IgG antibodies against antigen 60 has 67% sensitivity, 90% specificity and 81% positive predictive values. It has been decided that these values have no superiority compared to the sputum examination. It was also found out that sensitivity of antigen 60 ELISA IgG test is very low (22%) in the condition of primary pulmonary tuberculosis cases where direct sputum microscopy sensitivity is also very low.

Adult↗