pigmented spindle cell nevus of Reed
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pigmented spindle cell nevus
1 July 2004 -
nevus lipomatosus superficialis
12 January 2006naevus lipomatosus superficialis ; nevus lipomatosus cutaneous superficialis, Hoffmann-Zurhelle WKP PO
Definition: Nevus lipomatosus superficialis (NLS) is a rare benign cutaneous hamartoma characterized by papules and nodules usually in the pelvic and sacral areas, with ectopic mature adipose tissue reaching the superficial dermis.
Images
nevus lipomatosus superficialis macroscopical : https://twitter.com/JAADjournals/status/1194333303609925633 (...) -
follicular lymphoma
20 October 2005follicular B-cell lymphoma, follicle centre cell lymphoma; follicular B-cell lymphoma
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clear cell sarcoma of the kidney
14 July 2004, by JACCSK, renal clear cell sarcoma; bone-metastasizing renal tumour of childhood AGCOH PathConsult eMedicine
Digital slides
Case 66 (HPC:66) : Clear cell sarcoma of the kidney (CCSK)
Definition: Clear cell sarcoma of the kidney (CCSK) is a malignant renal tumor of childhood with a propensity to metastasize to bone and other organs. CCSK is linked to internal tandem duplications (ITDs) of the BCOR gene.
This tumor may also recur many years after its initial diagnosis. The average age (...) -
nodular fasciitis
13 July 2004subcutaneous pseudosarcomatous fibromatosis, proliferative fasciitis. Ent. 1955 WKP PO
Definition: Nodular fasciitis is a benign proliferation of fibroblasts in the subcutaneous tissues, commonly associated with the deep fascia. Nodular fasciitis is a benign mesenchymal tumor.
See also : pseudosarcomatous fasciitis and myositis
Nodular fasciitis (NF) is a relatively common mass-forming and self-limited subcutaneous pseudosarcomatous myofibroblastic proliferation of unknown (...) -
hepatoblastoma
16 March 2004hepatoblastomas
Definition: Hepatoblastoma is a malignant embryonal liver tumor that occurs almost exclusively in infants and very young children.
Image
Macroscopy : https://twitter.com/DraEosina/status/762631086207893506
Cytology: https://twitter.com/AdamGomezMD/status/720632495671087104
https://twitter.com/MArnold_PedPath/status/736000944303808512
Hepatoblastoma is composed of epithelial and mesenchymal elements in varying proportions and at various stages of differentiation. The (...) -
melanoma
13 June 2011melanomas ; malignant melanoma
Localization
cutaneous melanoma
non-cutaneous melanomas
meningeal melanoma
uveal melanoma
Images
Melanoma FNA
https://twitter.com/Sara_Jiang/status/736239982952747008
large cell melanoma
https://twitter.com/JMGardnerMD/status/1459672563571998724
Appearance
large cell melanoma
https://twitter.com/JMGardnerMD/status/1459672563571998724
fusiform cell melanoma
Digital cases
UI:1827 - Cutaneous malignant melanoma, solar damage
UI:347 - (...) -
angiosarcoma
23 August 2004angiosarcomas
Definition : Angiosarcoma (AS) is a rare sarcoma subtype showing considerable clinicopathologic and genetic heterogeneity. Most radiation-induced AS show MYC gene amplifications, with a subset of cases harboring KDR, PTPRB, and PLCG1 mutations.
Angiosarcoma is a rare tumor accounting for less than one percent of all sarcomas. It occurs typically in the skin and soft tissues of the head and neck.
It is a very malignant neoplastic proliferation arising from vascular (...) -
gastric adenocarcinoma
22 April 2004gastric cancer, gastric carcinomas PO
Images
M 14y/o gastric adenocarcinoma with bone metastasis https://twitter.com/Sandro_CZ/status/778725943980417024
Digital cases
JRC:10442 : cutaneous metastasis of a gastric adenocarcinoma.
Etiology
Gastric cancer is thought to result from a combination of environmental factors and the accumulation of specific genetic alterations due to increasing genetic instability, and consequently affects mainly older patients.
Microscopical subtypes (...) -
combined nevus
1 July 2004Histopathology:
symmetric, well circumscribed
2 or more of the following;
— common nevus
— blue nevus or other pigmented dendritic melanocytes
— Spitz nevus (epithelioid and spindle cell nevus)
— pigmented spindle and epithelioid cells
— amelanotic spindle cells
ordinary nevus component overlies/adjacent to other component
deep involvement occurs
plexiform configuration on occasion
Differential:
cellular blue nevus
melanoma
Return to: melanocytic (...)