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Biomedical subjects

J C Charlot

Publications and source records attributed to J C Charlot.

11 recordsLinked to original sources
PubMed2001

[Hyperkeratosis papilloma of the eyelid. An anatomic clinical case].

A clinicopathologic case of an 80-year-old male patient with a single cutaneous tumor on the upper part of the left eyelid is reported. It was a grayish and pigmented mass covered with a thick keratin layer, well circumscribed, and exophytic. After surgical removal, histopathology showed that the tumor had a papillomatous pattern and was growing under a thick layer of hyperkeratosis. It was a typical squamous cell papilloma. This tumor belongs to the benign eyelid tumor group and can be found on the eyelids of elderly people.

Aged↗
PubMed1987

[Eyelid localization of a Merkel cell tumor (trabecular carcinoma)].

The authors present four cases of Merkel cells tumor of the eyelid. These cases conform to the standard clinical and histological criteria specified in the dermatological literature. Immuno-histochemical studies have been performed (specific neuron enolase, cytokeratin KL 1). Il the last case an ultrastructural study has made evident the characteristic neurosecretory granulations and intermediate filaments. Various hypothesis concerning the origin of this tumor are discussed in light of anatomical evidence.

Adenocarcinoma↗
PubMed1985

[Value of alveolar lavage and transbronchial biopsy in the diagnosis of isolated sarcoid uveitis].

The diagnosis of sarcoidosis is established by biopsy of sarcoid tissues demonstrating non-caseating granuloma, but difficulties arise when extra pulmonary organs are involved separately. Positive histologic signs can however be found in the lung even when there are no radiologic features. Bronchoalveolar lavage and biopsies were performed in 19 patients presenting severe, strictly isolated uveitis (5 cases of anterior uveitis, 3 cases of posterior uveitis and 11 cases of panuveitis). Criteria of positivity were non-caseating granuloma and lymphocytosis. Positive signs were obtained in 6 cases (31,5%); 1 case of posterior uveitis and 5 of panuveitis. There was no case of false positive results but one false negative result. There was a lack of correlation between results of these investigations and angiotensin converting enzyme blood levels. These investigations are non-invasive in experienced hands.

Adult↗
PubMed1985

[Ganglioneuroblastoma of the orbit].

Ganglioneuroblastoma a transitional tumor of sympathetic origin has not yet been described as involving orbit. It is characterized by a mixture of cells ranging from primitive neuroblast to well differentiated ganglion cells within a neurofibromatous tissue. The prognosis is uncertain, as the tumor may either undergo maturation into a ganglioneuroma or may metastasize widely and rapidly as in neuroblastoma. We may postulate a relationship between ganglioneuroblastoma and Recklinghausen's neurofibromatosis in view of the development of the tumor in conjunction with the phacomatosis.

Cell Transformation, Neoplastic↗