George Habib

Diabetic muscular infarction: emphasis on pathogenesis

Diabetic muscular infarction is a rare complication of diabetes. It usually occurs in those with target organ involvement of diabetes, generally affecting one or a group of muscles of the thigh, and can recur. The pathogenesis of the disease is still not clear. Here we report an unusual case of extensive muscle involvement of both thighs and calves, with special emphasis on pathogenesis.

Tumor lysis syndrome after hydrocortisone treatment in metastatic melanoma: a case report and review of the literature.

Tumor lysis syndrome (TLS) is 1 of the complications that usually follows chemotherapy treatment of myelo-lymphoproliferative diseases. Corticosteroids (CS) could also induce TLS in this type of malignancies. On the other hand, TLS in solid tumors is less frequent, and CS treatment was never reported to be associated with TLS in solid tumor. Here we report the first case of TLS in a solid tumor (melanoma) after CS treatment.

The effect of intra-articular injection of betamethasone acetate/betamethasone sodium phosphate at the knee joint on the hypothalamic-pituitary-adrenal axis: a case-controlled study.

Background Intra-articular corticosteroid injection (IACI) of betamethasone depot preparation is a popular procedure at the knee joint. Intra-articular corticosteroid injection in general could be associated with systemic effects including suppression of the hypothalamic-pituitary-adrenal axis. There are nearly no reports on the effect of IACI of betamethasone at the knee joint on the hypothalamic-pituitary-adrenal axis. Method Consecutive patients attending the rheumatology or orthopedic clinic with osteoarthritic knee pain who were not responding satisfactorily to medical and physical therapy were allocated to group 1 after consent and given IACI of 6 mg of betamethasone acetate/betamethasone sodium phosphate. After completion of this part, consecutive age- and sex-matched patients were allocated to group 2 and given intra-articular injection of 60 mg of sodium hyaluronate. Demographic, clinical, laboratory, and radiographic variables were documented. Just before the knee injection and 1, 2, 3, 4, and 8 weeks later, patients had 1-μg adrenocorticotropin hormone (ACTH) stimulation test. Secondary adrenal insufficiency (SAI) was defined as levels of less than 18 µg/dL and lack of a rise of more than 6 µg/dL in serum cortisol level, 30 minutes after the ACTH stimulation test. Patients were blinded to the injected material, and all injections were ultrasound guided. Results Twenty patients were enrolled in each group and equally divided between the 2 sexes. The mean age of the patients was approximately 54 years in both groups. No significant difference in any variable was seen between the 2 groups. One patient only from group 1 (the betamethasone group) had SAI 3 weeks after the IACI compared to none in the control group (P > 0.9999). His serum cortisol level 30 minutes after the ACTH stimulation was 17 µg/dL, with a rise of 3 µg/dL from baseline. Conclusion Intra-articular corticosteroid injection of 6 mg of betamethasone acetate/betamethasone sodium phosphate at the knee joint was not significantly associated with SAI at the time points tested.

The effect of epidural methylprednisolone acetate injection on the hypothalamic-pituitary-adrenal axis

STUDY OBJECTIVE To evaluate the effect of an epidural corticosteroid injection of 80 mg and 40 mg of methylprednisolone acetate on the hypothalamic-pituitary-adrenal axis and on back pain. DESIGN Randomized, single-blinded prospective study. SETTING Operating room of a university-affiliated hospital. PATIENTS 42 patients with low back pain due to radiculopathy. INTERVENTIONS Group 1 received an epidural corticosteroid injection of 80 mg of methylprednisolone acetate, and Group 2 received an epidural corticosteroid injection of 40 mg of methylprednisolone acetate. All study patients underwent a stimulation test of one μg of adrenocorticotropin hormone (ACTH), and their pain levels were graded just prior to and following the epidural corticosteroid injection on weeks one, 3, and 4. MEASUREMENTS Serum cortisol of the ACTH stimulation tests and back pain levels were rated using a visual analog scale (VAS). Serum cortisol levels lower than 18 ng/mL 30 minutes following the ACTH stimulation test were considered to be secondary adrenal insufficiency. MAIN RESULTS 21 patients were enrolled in each group. The rate of secondary adrenal insufficiency in Group 1 was ~86%, ~ 22%, and ~17% of patients versus ~53% (P = 0.024), 15% (P = 0.874), and ~12% (P = 0.715) of Group 2 patients at weeks one, 3, and 4, respectively. About 62%, 56%, and 39% of Group 1 patients had a favorable clinical response as opposed to ~47% (P = 0362), 35% (P = 0.21), and ~6% (P = 0.049) of Group 2 patients at weeks one, 3, and 4, respectively. CONCLUSIONS Epidural corticosteroid injection of methylprednisolone acetate in both groups was associated with very high rates of secondary adrenal insufficiency, but significantly more so in Group 1 at week one. This suppression was transient, with recovery of the gland in most patients noted over the ensuing weeks. An epidural corticosteroid injection of 80 mg had higher rates of favorable clinical response than a 40 mg injection, but significantly more so at week 4 only. This favorable response waned over a few weeks in both groups.

Virtual Reality Feedback Cues for Improvement of Gait in Patients with Parkinson's Disease

Background Our aim was to study the effects of visual feedback cues, responding dynamically to patients self-motion and provided through a portable see-through virtual reality apparatus, on the walking abilities of patients with Parkinsons disease. Methods Twenty patients participated. On-line and residual effects on walking speed and stride length were measured. Results Attaching the visual feedback device to the patient with the display turned off showed a negligible effect of about 2%. With the display turned on, 56% of the patients improved either their walking speed, or their stride length, or both, by over 20%. After device removal, and waiting for 15 minutes, the patients were instructed to walk again: 68% of the patients showed over 20% improvement in either walking speed or stride length or both. One week after participating in the first test, 36% of the patients showed over 20% improvement in baseline performance with respect to the previous test. Some of the patients reported that they still walked on the tiles in their minds. Discussion Improvements in walking abilities were measured in patients with Parkinsons disease using virtual reality visual feedback cues. Residual effects suggest the examination of this approach in a comprehensive therapy program.

Ultrasonographic Findings in a Large Series of Patients with Knee Pain

Background: Musculoskeletal ultrasound (MSKUS) is becoming more and more popular in the evaluation of different musculoskeletal abnormalities. The aim of this retrospective study was to document the prevalence and spectrum of MSKUS findings at the painful knee. Materials and Methods: All the studies of MSKUS that were performed for the evaluation of knee pain during the previous 2 years at the Department of Radiology in Nazareth hospital were reviewed. Demographic and clinical parameters including age, gender, side, and MSKUS findings were documented. Results: Two hundred and seventy-six patients were included in the review. In 21 of them, both knees were evaluated at the same setting (total number of knees evaluated was 297). One hundred and forty-four knees were of the left side. Thirty-three pathologies were identified. 34% of the studies were negative. The most common MSKUS findings were medial meniscal tear (MMT) (20%), Bakers cyst (BC) (16%), and osteoarthritis (OA) (11%). Only one knee of all the knees evaluated in our study showed synovitis. Fifty-three knees (18% of all the knees evaluated) had more than one imaging finding, mosty two and while some had three findings. The most common combination of findings was MMT and BC (8 knees), MMT with OA (8 knees), and MMT with fluid (6 knee). In 67% of the patients who had simultaneous bilateral knee evaluation, at least one knee had no abnormal findings and in 43%, both knees were negative. Conclusions: MSKUS has the potential for revealing huge spectrum of abnormalities. In nearly 90% of the positive studies, degenerative/mechanical abnormalities were reported, with MMT, BC, and osteoarthritic changes being the most common.

Sweet’s syndrome affecting the external auditory canal and tympanic membrane

We report a patient who developed left ear pain, dry cough, and fever. The external auditory canal was tender, swollen, erythematous and full of debris. Later the patient developed widespread tender and red skin nodules and pustules that subsequently coalesced to form plaques. Identical lesions developed also in the external auditory canal and the tympanic membrane of the affected ear. Skin biopsy showed dermal neutrophilia, compatible with the diagnosis of Sweets syndrome. Rapid improvement was achieved with prednisone after the failure of antibiotics.

Hypergammaglobulinemic purpura in two sisters with Sjogren’s syndrome responding to colchicine treatment

Purpura is the hallmark of hypergammaglobulinemic purpura (HP). It appears mainly after strenuous activity in the dependent areas of the body. Treatment is mostly symptomatic. Here we report two sisters with Sjogren’s syndrome (SS) and HP who had a remarkable response to colchicine treatment.

The association between Baker's cyst and medial meniscal tear in patients with symptomatic knee using ultrasonography.

INTRODUCTION There are nearly no studies about the association between Bakers cyst (BC) and medial meniscal tear (MMT) using ultrasonography. PATIENTS AND METHODS Nonselected patients who were referred for ultrasonography for the evaluation of knee pain were recruited. Demographic, clinical, and ultrasound parameters were documented. RESULTS One-hundred and nineteen patients were included and 131 knees were evaluated. There were 59 (~50%) female patients and mean age of 46.4±17.7 years. BC was found in 31 knees (23%). BC was significantly associated with MMT (P=.029) and age (P=.002) after adjusting for other covariates. CONCLUSIONS BC was strongly associated with MMT regardless of other intraarticular abnormalities.

Ultrasound Findings of the Painful Ankle and Foot

Objectives: To document the prevalence and spectrum of musculoskeletal ultrasound (MSKUS) findings at different parts of the foot. Materials and Methods: All MSKUS studies conducted on the foot during a 2-year period (2012-2013) at the Department of Radiology were reviewed. Demographic parameters including age, gender, and MSKUS findings were documented. Results: Three hundred and sixty-four studies had been conducted in the 2-year period. Ninety-three MSKUS evaluations were done for the ankle, 30 studies for the heel, and 241 for the rest of the foot. The most common MSKUS finding at the ankle was tenosynovitis, mostly in female patients; at the heel it was Achilles tendonitis, also mostly in female patients; and for the rest of the foot it was fluid collection and presence of foreign body, mainly in male patients. The number of different MSKUS abnormalities that were reported was 9 at the ankle, 9 at the heel, and 21 on the rest of the foot. Conclusions: MSKUS has the potential for revealing a huge spectrum of abnormalities. The most common finding was collection/hematoma and foreign bodies at the foot, tenosynovitis at the ankle, and Achilles tendinitis at the heel.