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Biomedical subjects

D F Mutasim

Publications and source records attributed to D F Mutasim.

At least 19 recordsLinked to original sources

Adult onset verrucous epidermal nevus.

Epidermal nevi are hamartomas of the skin and have multiple clinical variants, including a verrucous type. Usually verrucous epidermal nevi present at an early age, are found on the lower extremities, have a female predominance, and are refractory to treatment. Only very rarely do verrucous epidermal nevi have an adult onset. We describe a 60-year-old woman with a 5-year history of multiple verrucous plaques on her face, scalp, and neck. Histologic examination revealed the characteristic findings of verrucous epidermal nevus. This is the oldest patient reported with an adult onset verrucous epidermal nevus.

Diagnosis, Differential

Bazex syndrome mimicking a primary autoimmune bullous disorder.

Bazex syndrome is a paraneoplastic condition that is most frequently associated with squamous cell carcinoma of the upper aerodigestive tract. The lesions affect acral areas of the skin, including hands, feet, ears, nose, and, to a lesser extent, elbows and knees. Lesions mimic psoriasis and dermatitis. Paronychia and nail dystrophy are frequent. Bullous lesions have been reported only rarely. We report a patient with Bazex syndrome with predominantly bullous lesions that mimicked a primary autoimmune bullous disorder.

Acrodermatitis

Elastic tissue in fibroepithelial polyps.

Fibroepithelial polyps are common cutaneous lesions with an unknown etiology. We attempted to demonstrate that fibroepithelial polyps develop secondary to a focal loss of elastic tissue. Forty-five fibroepithelial polyps were examined. All were stained with Verhoeff-van Gieson stain for elastic tissue and examined. All but one specimen had a normal amount of elastin and none revealed abnormally shaped elastic fibers. Abnormal or decreased elastic tissue is not the cause of fibroepithelial polyps.

Elastic Tissue

An open clinical trial of fluvoxamine treatment of psychogenic excoriation.

The purpose of this study was to examine the safety and efficacy of fluvoxamine in the treatment of psychogenic (neurotic) skin excoriation. Fourteen subjects with psychogenic excoriation were given fluvoxamine in a 12-week, open-label trial after completion of the Structured Clinical Interview for DSM-IV. All subjects met DSM-IV criteria for at least one comorbid psychiatric disorder, with mood disorder the most common. Most subjects' excoriation had features of an impulse control disorder. Both completers (N = 7) and the entire group had significant improvement on the modified Yale-Brown Obsessive Compulsive Scale but no improvement on the Hamilton Rating Scale for Depression. In the self-report data, the seven completers had significant reduction in behaviors involving the skin (e.g., scratching, picking, gouging, or squeezing) and in global assessment of symptoms. Endpoint analysis of all 14 subjects' self-report data demonstrated significant improvement in the presence of skin sensations, skin appearance and lesions, behaviors involving the skin, control over skin behavior, and global assessment. The results of this preliminary open trial suggest that fluvoxamine may be effective in reducing psychogenic excoriation, and this effect seems to be independent of mood. Controlled studies are needed to confirm these findings.

Adult

Pretibial dystrophic epidermolysis bullosa.

Pretibial epidermolysis bullosa is a rare variant of dystrophic epidermolysis bullosa, characterized by bullae and violaceous lichenoid papules and plaques of the anterior aspects of the legs. A case of pretibial epidermolysis bullosa is presented and the literature is reviewed.

Biopsy

Steatocystoma multiplex: a quick removal technique.

A 27-year-old man with multiple lesions located on his chest and neck and diagnosed as steatocystoma multiplex desired removal of these lesions. We report a facile, fast, and successful technique for the removal of lesions of steatocystoma multiplex. Using a no. 11 blade, we incised the domes of numerous lesions and removed the cyst walls with small artery forceps. Within 1 month, the incisions healed without scarring, and after 4 months of follow-up, they had not recurred. This procedure allows the removal of many lesions of steatocystoma in a few office visits.

Adult

Bowel bypass syndrome without bowel bypass.

"Bowel bypass syndrome without bowel bypass" is an entity in which patients have the same clinical presentation as patients with bowel bypass syndrome, but with other gastrointestinal disorders. We present two cases of this disorder, one who responded to metronidazole and ciprofloxacin, and the other who responded to prednisone and metronidazole.

Adult

Cutaneous pseudolymphomas.

Cutaneous pseudolymphoma refers to a heterogeneous group of benign reactive T- or B-cell lymphoproliferative processes of diverse causes that simulate cutaneous lymphomas clinically and/or histologically. The inflammatory infiltrate is bandlike, nodular, or diffuse and is composed predominantly of lymphocytes with or without other inflammatory cells. Depending on the predominant cell type in the infiltrate, cutaneous pseudolymphomas are divided into T- and B-cell pseudolymphomas. Cutaneous T-cell pseudolymphomas include idiopathic cutaneous T-cell pseudolymphoma, lymphomatoid drug reactions, lymphomatoid contact dermatitis, persistent nodular arthropod-bite reactions, nodular scabies, actinic reticuloid, and lymphomatoid papulosis. Cutaneous B-cell pseudolymphomas include idiopathic lymphocytoma cutis, borrelial lymphocytoma cutis, tattoo-induced lymphocytoma cutis, post-zoster scar lymphocytoma cutis, and some persistent nodular arthropod-bite reactions. This review attempts to discuss current aspects of the classification, pathogenesis, clinical spectrum, histopathologic and immunohistochemical diagnosis, and laboratory investigations for clonality in the various types of cutaneous pseudolymphomas.

Diagnosis, Differential

Characteristics of 34 adults with psychogenic excoriation.

BACKGROUND: Psychogenic excoriation, characterized by excessive scratching or picking of the skin, is not yet recognized as a symptom of a distinct DSM-IV disorder. The purpose of this study was to provide data regarding the demographics, phenomenology, course of illness, associated psychiatric comorbidity, and family history of subjects with psychogenic excoriation. METHOD: Thirty-four consecutive subjects were recruited from an outpatient dermatology practice and by advertisement. Subjects completed the Structured Clinical Interview for DSM-IV augmented with impulse control disorder modules, the Yale-Brown Obsessive Compulsive Scale, and a semistructured interview for family history, demographic data, and clinical features. RESULTS: Most subjects were women who described a mean age at onset of 38 years and a chronic course. Subjects excoriated multiple sites, most frequently the face. The behavior caused substantial distress and dysfunction. All 34 subjects met criteria for at least 1 comorbid psychiatric disorder, with a mood disorder the most common. Family histories were notable for depressive disorders and psychoactive substance use disorders. Most subjects experienced both mounting tension before excoriation and relief after excoriation as in impulse control disorders. A minority of subjects excoriated skin as part of obsessive-compulsive disorder. Body dysmorphic disorder with preoccupation about the skin's appearance precipitated excoriation in about a third of subjects. CONCLUSION: Psychogenic excoriation is chronic, involves multiple sites, and is associated with a high rate of psychiatric comorbidity. The behavior associated with the excoriation is heterogeneous and spans a compulsive-impulsive spectrum. Most subjects in this sample described features of an impulse control disorder.

Adult

Follicular psoriasis: an under-reported entity. A report of five cases.

Follicular psoriasis is not rare in dermatological practice, although only a few cases have been reported. We describe five patients with follicular psoriasis, one man and four women. The patients ranged in age from 23 to 73 years. Lesions consisted of erythematous scaly follicular papules located on the trunk and extremities. Two patients had associated plaque-type psoriasis of the scalp. None had nail involvement at the time of diagnosis. Histological examination of several biopsy specimens revealed the changes of psoriasis in the follicular epithelium.

Adult

Herpes simplex virus infection masquerading as condyloma acuminata in a patient with HIV disease.

Verrucous lesions in patients with human immunodeficiency virus (HIV) disease may be caused by viruses other than the human papillomavirus. We describe a 32-year-old HIV-positive black man who presented with a verrucous lesion of the intergluteal cleft that clinically resembled condyloma acuminata or verrucous carcinoma. Histopathological examination revealed the changes of herpes virus infection, and culture of the tissue confirmed the presence of herpes simplex virus. Human papillomavirus was not detected by in situ hybridization or the polymerase chain reaction. Significant regression of the lesion was seen after 6 weeks of treatment with oral acyclovir.

AIDS-Related Opportunistic Infections

Pyostomatitis vegetans associated with ulcerative colitis. Temporary clearance with fluocinonide gel and complete remission after colectomy.

Pyostomatitis vegetans is a rare condition characterized by pustules that affect the oral mucosa. It is consistently associated with inflammatory bowel disease and is usually resistant to treatment. We present the case of a 65-year-old white man with pyostomatitis vegetans that was associated with ulcerative colitis and adenocarcinoma of the colon. Fluocinonide gel resulted in a complete but temporary clearance of the lesions. Complete remission was achieved immediately after a total colectomy.

Adenocarcinoma

Skin explant culture: a reliable method for detecting pemphigoid antibodies in pemphigoid sera that are negative by standard immunofluorescence and immunoblotting.

We investigated the presence of bullous pemphigoid antibodies in bullous pemphigoid sera that are negative by standard indirect immunofluorescence. We incubated each of four indirect immunofluorescence-positive bullous pemphigoid sera, seven indirect immunofluorescence-negative bullous pemphigoid sera, one indirect immunofluorescence-negative herpes gestationis serum, three indirect immunofluorescence-positive epidermolysis bullosa acquisita sera, five indirect immunofluorescence-negative epidermolysis bullosa acquisita sera, and two normal human sera with fresh human skin explants in medium 199 at 4 degrees C for 48 h. All bullous pemphigoid sera, herpes gestations serum, and the three indirect immunofluorescence-positive epidermolysis bullosa acquisita sera had IgG that bound the basement membrane zone of skin explants with moderate to marked intensity as demonstrated by immunofluorescence. Normal sera and indirect immunofluorescence-negative epidermolysis bullosa acquisita sera failed to bind the explant basement membrane zone. Immunoblotting of bullous pemphigoid sera showed five of seven indirect immunofluorescence-negative bullous pemphigoid sera to bind high-molecular weight and/or low-molecular weight bullous pemphigoid antigens from epidermal extracts. We conclude that the skin explant culture system is a very sensitive method for the detection of bullous pemphigoid antibodies in all bullous pemphigoid sera.

Adolescent

Established methods in the investigation of bullous diseases.

We have discussed an approach to the diagnosis of bullous diseases based on available and established methods. We highlighted the clinical features that help distinguish the various diseases. We then outlined a histopathologic pattern approach to the differential diagnosis and extensively discussed the value of immunofluorescence in the diagnosis of bullous diseases.

Diagnosis, Differential

Drug-induced pemphigus.

Drug-induced pemphigus is a heterogenous group of disorders in which a drug induces acantholysis. The majority of patients have immune features of pemphigus and have a course similar to idiopathic pemphigus. Few patients do not have a detectable autoimmune process, and their eruption usually resolves with discontinuation of the associated drug. The mechanism of induction of the autoimmune process and acantholysis is not clear.

Fluorescent Antibody Technique