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Biomedical subjects

K L Gupta

Publications and source records attributed to K L Gupta.

At least 73 records · Page 4Linked to original sources
PubMed1993

Disseminated tuberculosis in a renal transplant recipient presenting as a non-healing skin ulcer. A case report.

Cutaneous tuberculosis in renal allograft recipients is rare. A 33 year old recipient of a second renal allograft developed a painless ulcer on the left foot two months after surgery, followed by the appearance of a cold abscess in the left inguinal region. Smear from the pus aspirated from this abscess revealed acid fast bacilli, and biopsy from the edge of the ulcer showed an epithelioid cell granuloma with Langhans type of giant cells. X-ray of the chest revealed miliary mottling in both lung fields. Antitubercular therapy lead to a complete resolution of the tuberculous lesions.

Adult↗
PubMed1993

Renal amyloidosis in juvenile rheumatoid arthritis.

We report a child who developed juvenile rheumatoid arthritis at the age of 7 years and nephrotic syndrome due to renal amyloidosis within 2 years of the onset of arthropathy. Literature on the management and prognosis has also been reviewed.

Amyloidosis↗
PubMed1993

Emphysematous pyelonephritis and cystitis in a renal transplant recipient--computed tomographic appearance.

A 35-year-old nondiabetic renal allograft recipient developed emphysematous pyelonephritis and cystitis emphysematosa necessitating graft nephrectomy. The patient received cyclosporin and prednisolone as immunosuppressive therapy. He developed the first episode of urinary tract infection one week after transplantation and another episode 3 months later. Abdominal CT scan revealed presence of gas in the graft kidney, urinary bladder, and surrounding tissues. Despite appropriate antibiotic therapy, his renal function deteriorated rapidly and he died on the first postoperative day.

Adult↗
PubMed1992

Magnetic resonance imaging of orbital lymphangioma with and without gadolinium contrast enhancement.

BACKGROUND: Lymphangioma is a vascular tumor of the orbit with a propensity for recurrent hemorrhage. These tumors may be difficult to diagnose in young patients who present with sudden proptosis due to hemorrhage into a previously unrecognized lesion. Magnetic resonance imaging (MRI) should be ideally suited for evaluating lymphangioma due to the unique ability of MRI to characterize hemorrhage because of the paramagnetic qualities of hemoglobin. METHODS: The authors performed T1-, T2-, and proton density-weighted MRI on 12 patients with orbital lymphangioma. Six patients underwent MRI with gadolinium-DTPA contrast enhancement. The MRI studies were performed using a 1.5 Tesla super-conducting magnetic resonance unit, except for 3 early studies performed with a 0.5 Tesla unit. All studies were performed with orbital surface coil imaging. Computed tomography (CT) was performed in 10 patients. RESULTS: Tumor was visible on MRI in all 12 patients. Magnetic resonance imaging delineated clearly the internal structure of subacute and chronic hemorrhagic cysts, and differentiated between these tumors because of the different paramagnetic qualities of subacute hemorrhage compared to chronic hemorrhage. In two patients, MRI detected large tumor feeding vessels by the flow void phenomenon unique to MRI. Computed tomography did not detect these vessels. Gadolinium-contrasted T1-weighted MRI did not further delineate or characterize the tumor. CONCLUSION: Magnetic resonance imaging is the modality of choice for imaging orbital lymphangioma because of its unequalled differentiation of hemorrhagic cysts, and its unique ability to detect tumor feeding vessels by the flow void phenomenon.

Contrast Media↗
PubMed1992

Acute renal failure in severe hypothermia.

A patient who developed acute renal failure associated with severe hypothermia is reported. Warm peritoneal dialysis was initiated for core rewarming followed by intermittent hemodialysis till he entered the diuretic phase. The factors which led to acute renal failure in this patient included hypovolemia, hypotension, and acute pancreatitis.

Acute Kidney Injury↗
PubMed1991

Magnetic resonance imaging of choroidal melanoma with and without gadolinium contrast enhancement.

Choroidal melanoma is the most common intraocular tumor and is uniquely suited for evaluation by magnetic resonance imaging (MRI) because of the paramagnetic effect of the melanin molecule. The authors performed T1-, T2-, and proton-density-weighted MRI on 34 patients with choroidal melanoma. Nineteen patients received gadolinium contrast, T1-weighted images were superior in both detecting and delineating tumors, showing increased contrast-to-noise ratios over other images. Gadolinium contrast further increased this ratio. These images are presented as evidence that gadolinium-enhanced MRI is valuable in the evaluation of choroidal melanoma.

Choroid Neoplasms↗
PubMed1991

Ocular complications in renal allograft recipients.

Ocular complications in renal allograft recipients are a significant cause of morbidity. Of 80 renal transplant recipients, 42 (52.5%) developed ocular complications. These included posterior subcapsular cataract in 22 patients (27.5%), opportunistic ocular infections by CMV, cryptococcus, mucormycosis, herpes simplex and herpes zoster in five (6.25%), steroid-induced raised intraocular pressure in four (5%) and primary disease-related vascular complications in ten (12.5%). Our findings highlight the importance of regular ocular examination of all allograft recipients in the post-transplant period.

Adolescent↗
PubMed1991

Gd-DTPA-enhanced short repetition time and short inversion time inversion recovery magnetic resonance imaging. Experimental and clinical assessment.

To suppress both water and fat signal while retaining the high signal of Gd-DTPA enhancement, magnetic resonance imaging (MRI) of phantoms and 28 patients with mass lesions was done using short repetition time (TR) and short inversion time inversion recovery (STIR) sequences. Optimal STIR pulse sequences of 500 to 1000/80-100/20-30 (TR/TI/TE) were determined by an experimental study. In most instances, a signal bandwidth of +/- 8 kHz was used to increase the signal-to-noise ratio. The authors measured image contrast between lesions and adjacent fatty tissue and compared postcontrast STIR and T1-weighted spin-echo (T1-W SE) images. When the signal intensity of a lesion is 80% of adjacent fatty tissue on postcontrast T1-W SE, short TR STIR images provide better tumor delineation.

Contrast Media↗
PubMed1991

Sigmoid colon conduit urinary diversion in a renal transplant recipient.

Renal allotransplantation is the treatment of choice for patients with end-stage renal disease (ESRD). With increasing technical expertise, it has been realised that presence of a normal lower urinary tract is not a necessity for transplantation. Advanced genito-urinary tuberculosis frequently leads to a small-capacity bladder. Herein, we present a case of ESRD due to urinary tuberculosis in whom sigmoid colon conduit urinary diversion was carried out. The immunosuppressed status did not increase the complications of a sigmoid colon conduit urinary diversion.

Adult↗
PubMed1991

Myoglobinuric acute renal failure following electrical injury.

Eight patients with acute renal failure (ARF) following electrical injury were studied. The mean area of cutaneous burns was 23 +/- 16% (range 6-60%) and extensive tissue necrosis with gangrene was uniformly present. Oliguria developed 9.3 +/- 7 h (range 3-24 h) after the injury in 7 patients (88%). Urinalysis revealed presence of myoglobin in 75% of the patients. The mean duration of oliguria among those who recovered was 16 +/- 6 days (range 11-23 days) and the mean interval between the onset of oliguria and recovery of renal function was 25 +/- 6 days (range 21-34 days). Four patients died. The cause of death was Klebsiella septicemia in 1, hyperkalemia associated with extensive myonecrosis in 2 patients, and uncertain in 1 patient. Our observations showed that myoglobinuric acute renal failure associated with electrical injury carries a high mortality. Early detection and aggressive management of hyperkalemia and sepsis are necessary to reduce mortality among these patients.

Acute Kidney Injury↗
PubMed1991

Crescentic glomerulonephritis associated with puerperal sepsis.

Acute renal failure developed in a young female having puerperal sepsis due to beta-haemolytic streptococci. The patient succumbed to her illness and an autopsy revealed extensive crescentic glomerulonephritis. The association between chronic visceral sepsis and glomerulonephritis is discussed.

Acute Kidney Injury↗