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Biomedical subjects

J Kronenberg

Publications and source records attributed to J Kronenberg.

At least 37 records · Page 2Linked to original sources
PubMed1996

Auricular reconstruction with a postauricular myocutaneous island flap: flip-flop flap.

Surgical defects of the concha-helix part of the ear larger than 2 cm may pose a reconstructive challenge. Split- or full-thickness skin grafts or local flaps may be used, and a number of these have been described. Yet cosmetic results are often unsatisfactory. Our experience with a postauricular myocutaneous island flap is described. Eleven patients (12 ears), aged 48 to 89 years, underwent the procedure under local anesthesia following excision of conchal bowl malignant tumors that included the cartilage underlying the skin. The surgical technique is described in detail. Few complications were encountered, and cosmetic results were excellent. In four ears, resection margins extended into the ear canal, and that portion was allowed to heal satisfactorily by secondary intention. We recommend the use of this flap for practical, safe, and early good cosmetic results.

Aged↗
PubMed1996

Postintubation arytenoid subluxation.

Arytenoid subluxation (AS), ie, malpositioning of the arytenoid cartilage with abnormal but existent contact between the joint surfaces, is an uncommon entity, and fewer than 70 cases have been reported, 26 of which were in a recently published series. Usually, AS is the result of upper airway instrumentation, and only a few cases were reported to occur with external trauma to the neck. Some predisposing factors and possible mechanisms have been suggested, but the reason for its occurrence remains obscure. Hoarseness and, to a lesser degree, dysphagia, odynophagia, cough, and sore throat may be indicative of AS. Diagnosis is established by the clinical course, laryngoscopy, and computed tomography. Electromyography and strobovideolaryngoscopy are additional diagnostic measures described. We report 7 cases of postintubation AS of long standing. Three of these patients had prior unilateral vocal cord paralysis, formerly undescribed as a possible contributing factor for AS. The pertinent literature is reviewed and treatment options are discussed.

Adult↗
PubMed1996

DentaCT for evaluating mandibular and maxillary invasion in cancer of the oral cavity.

We used a retrospective analysis of charts, imaging studies, and histologic findings when available in 17 patients with cancer of the oral cavity to define the value of DentaCT or multiplanar reformation software in assessing bony involvement by malignant tumors of the oral cavity. From two academic tertiary-referral medical centers, the 17 patients had a mean age of 63 years and suspected maxillary (2) or mandibular (15) invasion. All patients had conventional computed tomography scanning and multiplanar reformation scans with several additional imaging studies obtained. Two patients demonstrated no bony involvement by imaging and histologic studies. Twelve of the remaining 15 patients had surgically documented bony involvement also correctly detected by DentaCT. DentaCT was found to be a valuable tool in defining extent of bony invasion by tumor. Although not compared to other imaging modalities, our experience supports the use of DentaCT where available for this purpose.

Adult↗
PubMed1995

The indication for tonsillectomy in children following peritonsillar abscess.

The clinical course of 19 consecutive children treated for peritonsillar abscess (PTA), in the Chaim Sheba Medical Center, between 1988-1992 was retrospectively reviewed. The abscess was drained through an incision (12 children) and by needle aspiration (7 children), under local (11 children) or general (8 children) anesthesia. One child suffered from recurrent bouts of tonsillitis after the abscess resolved and eventually underwent tonsillectomy. Two others, with a pre-PTA history of recurrent tonsillitis (T+) underwent interval tonsillectomy. Recurrent PTA did not develop in any of the 16 non-operated children. The involvement of mainly older children can explain both the low rate of the pre-PTA history of T+ and the number of children whose abscess could be drained under local anesthesia. Tonsillectomy should be indicated in cases of recurrent PTA or in children with a pre-PTA history of T+. The need for general anesthesia for draining the abscess in young children does not seem, in itself, to warrant a routine hot tonsillectomy.

Adolescent↗
PubMed1995

Acute suppurative parotitis and parotid abscess in children.

Acute suppurative parotitis and parotid gland abscess are infrequently encountered among children. Fourteen children were diagnosed in the Sheba Medical Center as suffering from these infections and their clinical features are described. Discussion reveals neither significant differences nor predominating factors to differentiate between these two entities.

Abscess↗
PubMed1995

Care of the terminal head and neck cancer patient in the hospice setting.

The ratio of incidence to mortality is somewhat less than 3:1 for head and neck cancer, and the 5-year relative survival rate is 50%. Despite the high mortality rate, few reports have focused on patients with terminal head and neck cancer. A growing number of these patients end their lives in a hospice facility. A retrospective analysis was undertaken of 67 patients with terminal head and neck cancer who were admitted to the Tel Hashomer Hospice between 1988 and 1992. Patient data were reviewed and analyzed, and the particular characteristics of this population were defined. This study found that terminal head and neck cancer patients seem to receive better support in a hospice than in a general hospital or some family settings.

Aged↗
PubMed1994

Hyponatremia associated with laryngeal squamous cell carcinoma.

An association between laryngeal squamous cell carcinoma and inappropriate antidiuresis is described in a 76-year-old man. Even though all accepted diagnostic criteria for the syndrome of inappropriate secretion of antidiuretic hormone were fulfilled, abnormal levels of antidiuretic hormone were not demonstrated, leaving the mechanisms of this hyponatremia unclear.

Aged↗
PubMed1994

Acinic cell carcinoma of the trachea.

Acinic cell carcinoma (ACC) appears primarily in the parotid gland. It is extremely rare in the respiratory tract and only a few cases of ACC in the lungs, larynx, nose, and paranasal sinuses have been described. We present here a case of ACC located in the trachea and discuss possible therapeutic strategies in the light of this tumor behavior relating to other sites.

Adult↗
PubMed1994

The combined use of classified bone and gallium scans in the management of frontal sinusitis.

Bone and gallium scans of the sinus regions were performed in 32 patients presenting with frontal sinusitis. Bone scans, classified according to 99Tcm-methylenediphosphonate (MDP) distribution patterns indicated both active and resolving sinusitis as well as surgically related bone trauma. Gallium scan uptake intensity correlated well, however, with final outcome and differentiated between active and resolving sinusitis, more specifically than corresponding bone scans. Thus combined studies appear to have a significant role in the diagnosis and management of patients suspected for frontal sinusitis.

Adult↗
PubMed1994

Matutinal vertigo--a chronobiological phenomenon.

Matutinal vertigo, characterized by vertiginous attacks occurring in the morning, has been noted in a significant percentage of patients with vestibular disorders and is considered to be precipitated by the patient's movements preparatory to arising from bed. Chronobiological studies of the variations of positional nystagmus in 10 patients with acute vertigo revealed rhythms of circadian periodicities in eight. The acrophases (i.e. computed peak hour), of nearly 40% of the circadian rhythms were found between 02.00 and 07.00 hours. Chronobiological characteristics of the vestibular system are postulated to play a part in the development of this clinical phenomenon.

Adult↗
PubMed1994

Peritonsillar abscess: repeated needle aspiration versus incision and drainage.

The study evaluates the management of peritonsillar abscess (PTA) by comparing needle aspiration versus incision and drainage of the abscess. Twenty-four of 86 patients treated by needle aspiration underwent a single aspiration, and 38 had 2, 19 had 3, and 5 had 4 aspirations before the abscess resolved. A significant amount of pus, up to 8, 5, and 3 mL, respectively, was detected in the subsequent aspirations. Recurrent PTA was noted in 20 patients (23.26%). In 9 of these patients (10.47%) the recurrent episode occurred immediately (in less than 1 month) and was considered residual disease. Seventy-four patients were treated by incision and drainage, and none had an immediate recurrence. Only 3 (4.05%) patients developed a late recurrent episode. The difference in the recurrence rate between the two groups is statistically significant. A history of recurrent tonsillitis prior to abscess formation did not show a significant influence on the recurrence rate. A high incidence of streptococcal infections was noted in both groups, with anaerobes detected in only 15% of samples. There was a good response to penicillin-resistant organisms. Although needle aspiration is a tempting modality for treating PTA in community clinics, one should be aware of the risks of a higher incidence of residual and recurrent disease in comparison to incision and drainage, as well as the need for repeated aspirations.

Adolescent↗
PubMed1994

The effect of prostaglandins E2 and F2a on brain and tracheal ciliary activity.

Prostaglandins E2 and F2a have a mild stimulatory effect (+11% to 18% from baseline) on the in vitro ciliary beat frequency in tracheal rings, which contain mucus-producing cells, and in brain slices, which are devoid of mucus. Results are compared with previous studies and the merits of the used experimental models are discussed.

Animals↗