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Biomedical subjects

H N Cabrera

Publications and source records attributed to H N Cabrera.

15 recordsLinked to original sources

Management of hydrocephalus in Paget's disease. Case report.

The authors report on a case of Paget's disease with hydrocephalus in an elderly female with a favourable result after ventriculoperitoneal shunt. The neurological examinations at the time of admission revealed mild dementia, ataxic gait and urinary incontinence. Skull X-ray, CT-scan and MRI showed hydrocephalus and basilar impression. The pathophysiological hypothesis is discussed and the technical difficulties during the shunt surgery are described.

Aged↗

[Pedal papules in newborn infants].

Four cases of newborn children who presented pedal papules since birth, are reported. They showed the following features, different from the ones seen in adults: a solitary lesion, bigger size, localization on medial plantar region aspect of the heel, presence at birth, absence of an obvious piezogenic factor, physiopathogenic model that explains the development of lesions in adults, which are compared to those appearing in the newborn, are proposed.

Female↗

[Study of hyperchromatism caused by benzene derivatives].

We report two patients with vitiligo-like lesions caused by contact with compounds containing phenols and toluene. The clinical, histopathologic and ultrastructural findings are compared with vitiligo. Two mechanisms may be present: one from direct enzymatic or cytotoxic action on melanocytes and the other through immunologic reaction.

Benzene Derivatives↗

[Disseminated pigmented nevus syndrome].

Two patients carriers of a neuro-cutaneous syndrome showing scattered pigmentary nevus and neurologic disorders are exposed, who are added to three similar cases presented in a previous publication. Differences with other syndromes that show cafe-au-lait spots, like those of Recklinghausen and Albright, and also of other known publications, are remarked. Ultrastructural studies are contributed. The denomination of "disseminated pigmentary nevus syndrome" is proposed in comparison with the epidermal nevus syndrome.

Child, Preschool↗

[Cryoglobulinemia. Study of 3 cases (2 essential and 1 secondary)].

There patients with diverse skin manifestations of cryoglobulinemia have been investigated. Case number one. An essential mixed cryoglobulinemia with purpuric cutaneous lesions, rheumatoid factor, asthenia and chronic glomerulonephritis. Case number two. A secondary mixed cryoglobulinemia (chronic lymphatic leukemia), with purpuric lesions. Case number three. An essential mixed cryoglobulinemia, with extensive and deep necrotic lesions that necessitated the amputation of the left hand; severe hepatic, renal, and splenic damage by deposit of cryoglobulin. Clinical features, etiopathogenesis and therapeutic possibilities are commented on.

Adult↗

[Aphthous ulcers and their syndromes].

With the object to clarify the different aphthous syndromes, their clinical manifestations, histopathological and radiological patterns and their evolution, the authors report three patients (26 year old woman with a bipolar aphthosis, Neumann type; 47 year old man with a Behcet's syndrome, and a 53 year old woman with a recurrent necrotic mucous periadenitis), pointing out that these entities are as important for dermatologists as for the other specialists.

Adult↗

[Basal cell epithelioma of the vulva in chronic endemic regional arsenic poisoning].

A 65 years old patient with vulvar basal cell carcinoma and cutaneous manifestations of chronic arsenicism is reported; by its endemic origin is considered as hidroarsenicism ( ERCHA = endemic regional chronic hidroarsenicism ). The unusual presentation of this type of cancer is resalted , and it's attributed to its general disease . The principal characteristics of arsenical skin cancer are considered.

Aged↗

[Subcutaneous fat necrosis of the newborn infant. Apropos of 2 cases].

Two cases of subcutaneous fat necrosis of the newborn are reported, an infrequent disease characterized by nodules or cutaneous endurated plaques that appears a few days after birth, which histopathologic studies shows fat necrosis with formation of giant cells granulomas strange body type and the presence of needle shaped clefts corresponding to fat crystals. This is a benign disease that has to be to differentiated from sclerema neonatorum, a serious entity which coexists with another disease so we also think it could be more a symptom than an authentic thickness. The two entities are vinculated physiopathologically by the injury of the fat tissue with a minor quantity of oleic acid and a major relative proportion of palmitic and stearic acid; than that of the adult, which conditions its easy solidification.

Fat Necrosis↗

[Angiokeratomas. Apropos of 8 cases].

Eight patients with angiokeratomas are reported; three of them with angiokeratoma circumscriptum present at birth, three angiokeratoma Fordyce type with vulvar location, another one with scrotum location all these appeared by the third decade and the other one a solitary angiokeratoma which age of onset was forty-one years. The clinical and histopathological aspects of the angiokeratoma are studied.

Adult↗

[Carcinoid papillomatosis].

Papilomatosis Carcinoides, presents clinical and histological characteristics that may be authentically described as a transition state between the benign papillomatous proliferations and spindle cell carcinoma. It involves a series of clinical conditions, that are described with different names that correspond to the condyloma accuminatum gigantum. [Buschke and Lowenstein) wartic carcinoma [Ackerman], Papillomatosis oral florid [Rock and Fisher], carcinomatoid [Gilbert] profuse conjuntival papillomatosis [Bazex], etc. These latter only refer to partial localizations or a special clinical form. That is why we believe the denonmination Papillomatosis Carcinoides, is preferable, which is its cutaneous, mucose or semimucose forms involves all of them. The treatments applied to the 18 cases presented have been very diverse: they vary from the elimination of the lesions by the application of topical podophylin to large surgical ablations. But most of them showed a regression or cure of their lesions by citostatics [methotrexate] not prevent the proliferative advance of the lessions. These therapeutic data can also contribute to its nosologic classification. In some cases they have an evolutive character with slow progression for years, still being curable with podophylin and in others that due to their chronic evolution with added supuration, and complications of the general health, make surgery necessary. In most cases, the antimetabolities are the therapy of choice the radiations seem inoperative. It may be noted that tumoral papillomatous lesions produced by virus, exist in veterinatian pathology (fibropapillomatosis in the bovine genitals, equine sarcoid, papilomatosis of goats, monkeys, etc.). Noteworthy are those of the oral mucosa of rabbits which are white greyish sesiles or pedunculated small nodules localized mostly on the inferior surface of tongue with a similar histology to the papilomatosis carcinoides. These observations would suggest a viral ethiology, even though all the efforts to isolate the virus of the lesions gave negative results. Our attention is drawn to case n. degrees 14. That began as a simple plantar wart. There have also been numerous cases in which from the beginning they were simple condylomas accuminatum, caused without any doubt by a virus. The carcinoid papillomatosis could be related to the spindle-cell carcinoma that developed in the areas of chronic infection with herpetic virus n. degrees 2, where the virus can be isolated from the lesions; the virus disappearing later with the development of the epithelial tumoral state [cases described previously by some authors as neophasias on vaccination scars and on recurrent genital herpes].

Aged↗

[Histiocytofibroma. Spontaneous regression, leaving skin atrophy].

Three cases of histiocytoma with atypical course are described by the authors. Two of them dissappeared completely or almost completely leaving a scar where some remnants of the original tumor were present. In the third patient the tumor grew deeply in the dermis leaving the same atrophic scaring on the surface. By palpation the original tumor was also detectable.

Adult↗

[Actinic lichen].

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Adolescent↗