Heino Hügel

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A single-point mutation in exon 15 of the BRAF gene has recently been reported in a high percentage in cultured melanoma cells and in 6 of 9 primary melanomas examined. To evaluate the impact of the T1796A BRAF mutation, we screened primary melanomas, various types of nevi and lesions where a melanoma developed in an underlying nevus. We could detect the(More)
The histological diagnosis of inflammatory skin diseases on a day-to-day routine basis poses the difficult task to characterise a dynamic clinical process by histomorphological analysis of one single lesion. Very complex algorithms which are meant to lead to the correct diagnosis are difficult to use. To facilitate the process and reduce the number of(More)
Die histomorphologische Diagnostik entzündlicher Hauterkrankungen in der Alltagspraxis hat die schwer lösbare Aufgabe aus einer Läsion und zu einem bestimmten Zeitpunkt einen klinisch definierten dynamischen Entzündungsprozesses des Hautorgans durch histologische Kriterien zu charakterisieren. Sehr komplexe Algorithmen, die den Betrachter zur Diagnose(More)
BACKGROUND Glomus tumors are benign, mainly superficially located perivascular neoplasms, composed of cytologically characteristic neoplastic cells staining immunohistochemically positive for vimentin and muscle actin, closely associated with often branching blood vessels. METHODS Six cases of glomus tumor were analysed histologically and(More)
Lyme disease has been suspected to be one cause of secondary anetoderma. We present a 25-year-old male patient with multiple lesions of anetoderma with a diameter of up to 2 cm that developed within the last 4 weeks without subjective symptoms. The histopathologic pattern was similar to the inflammatory stage of acrodermatitis chronica atrophicans.(More)
Anogenital mammary-like glands, although known to exist (as ectopic breast tissue) as early as 1872, have only recently been thoroughly studied and suggested to be the possible origin for various neoplastic (benign and malignant) and reactive conditions that show a striking homology with lesions in the breast. Reported herein is an unusual benign lesion(More)
We present an example of ductal carcinoma connected to a syringocystadenoma papilliferum situated in a nevus sebaceus of Jadassohn on the scalp of a 22-year-old woman. The ductal carcinoma involved the entire thickness of the dermis and extended to the subcutaneous fat. Because syringocystadenoma papilliferum is considered a hamartoma with apocrine(More)
BACKGROUND BRAF, a serine/threonine kinase, is a component of the retrovirus-associated sequence (RAS)-RAF-extracellular-regulated protein kinase (ERK)-MAP kinase signal transduction pathway mediating signals from RAS to ERK. The T1796A single point mutation in exon 15 of the BRAF gene has recently been reported in a high percentage of malignant melanomas(More)