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Andreas Kappeler

Explore the profile of Andreas Kappeler including associated specialties, affiliations and a list of published articles. Areas
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Articles 41
Citations 568
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Recent Articles
1.
Hewer E, Beck J, Murek M, Kappeler A, Vassella E, Vajtai I
Neuropathology . 2014 Jan; 34(4):323-32. PMID: 24444336
A polymorphous variant of oligodendroglioma was described by K.J. Zülch half a century ago, and is only very sporadically referred to in the subsequent literature. In particular, no comprehensive analysis...
2.
Vajtai I, Hewer E, Neuenschwander M, Schafer S, Kappeler A, Lukes A
Clin Neuropathol . 2013 Apr; 32(3):176-82. PMID: 23557904
Myoepithelioma is a dimorphic neoplasm with contractile-epithelial phenotype, originally interpreted as deriving from, but not actually restricted to the salivary glands. As a novel addition to the list of exquisitely...
3.
Thommen F, Hewer E, Schafer S, Vassella E, Kappeler A, Vajtai I
Clin Neuropathol . 2013 Apr; 32(5):370-6. PMID: 23547894
Rosette-forming glioneuronal tumor (RGNT) is a recently introduced, indolent neoplasm composed of diminutive circular aggregates of neurocytic-like cells on a noninfiltrative astrocytic background, typically located in the cerebellar midline The...
4.
Schurch C, Birrer M, Estella I, Kappeler A, Hewer E, Vajtai I
Pathol Res Pract . 2013 Feb; 209(3):155-60. PMID: 23419690
Based on a single-case observation, the descriptive label "leiomyomatoid angiomatous neuroendocrine tumor" (LANT) has been tentatively applied to what was perceived as a possible novel type of dual-lineage pituitary neoplasm...
5.
Vajtai I, Vassella E, Hewer E, Kappeler A, Reinert M
Pathol Res Pract . 2012 Oct; 208(12):750-5. PMID: 23102810
By analogy to gliosarcoma, the neologism "oligosarcoma" is to describe an uncommon form of biphasic central nervous system tumor composed of contiguous neuroepithelial and mesenchymal elements, each of which individually...
6.
Matter A, Hewer E, Kappeler A, Fleischmann A, Vajtai I
Pathol Res Pract . 2012 Apr; 208(5):310-4. PMID: 22494537
The descriptive term hybrid peripheral nerve sheath tumor refers to any neoplasm of the neurilemmal apparatus composed of more than one pathologically defined tumoral equivalent derived from its constituent cells....
7.
Galli S, Kappeler A, Vassella E, Sahli R, Vajtai I
Clin Neuropathol . 2012 Mar; 31(2):99-103. PMID: 22385791
No abstract available.
8.
Vajtai I, Hewer E, Andres R, Neuenschwander M, Kappeler A, Gugger M
Pathol Res Pract . 2011 Aug; 207(9):592-6. PMID: 21831532
Perineurioma is an uncommon, mostly benign, spindle-cell tumor of peripheral nerve sheath origin with a predilection for the soft tissues. Although increasing awareness points to the sites of involvement by...
9.
Rocha C, Schafer S, Kappeler A, Baumann M, Surbek D, Vajtai I
Pathol Res Pract . 2011 Jun; 207(7):456-61. PMID: 21664057
The uncommon simultaneous occurrence of an exuberant, angioma-like proliferation of superficial cerebral microvessels along with absence of the kidneys has been proposed to constitute a syndromic complex for which the...
10.
Vajtai I, Beck J, Kappeler A, Hewer E
Acta Neuropathol . 2011 May; 122(2):253-8. PMID: 21590491
Spindle cell oncocytoma (SCO) is a rare, non-adenomatous tumor originating from the anterior pituitary gland. Composed of fusiform, mitochondrion-rich cells sharing several immunophenotypic and ultrastructural properties with folliculo-stellate cells (FSC),...