In this section we have Logan's cases since June 2010, now over 4000! You can review the archived cases and read the suggested diagnoses by users and the final comment by the contributors.

Epithelioid (cell) fibrous histiocytoma

By Operations Pathhub

Wednesday at 13:45

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Case 992 11.4.14 (M. Hurt) M 34 polypoid lesion on back

Looked like an aneurysmal DF to me. Polypoid nature and collarette apparently typical.

Case 2191 1.11.18 M 10 wrist - with granular cytoplasm.

Expansile spindle cell tumour with granular cytoplasm. Unlike normal granular cell tumours this one was S100 –ve; ALK-1 +ve.

(See granular cell change.)

Case 2572 15.5.20 (R. Carr) M 65 lower leg

Interesting anatomy. Tumour surrounded by circumferential epidermal collarette. Cells are epithelioid, eosinophilic, may be sheeted or storiform. Nuclei may be atypical, enlarged and bi- or multinucleate. Inflammation and vascular dilation present.

Strongly ALK+ve – masquerading as Spitz naevus (but melanocyte markers –ve)