Nodular infiltrate, extending through all levels of the dermis into the subcutis. Epidermotropism is usually present with a few single cells. Tumor cells grow in dense cohesive sheets. Clusters of small reactive lymphocytes are found within and around the tumorous proliferation. Eosinophils, plasma cells and accessory cells are usually lacking.
Large, bizzare cells with large, round, irregularly shaped nuclei, abundant chromatin and one or multiple nucleoli. Cells may be multinucleated. Abundant, clear or eosinophilic cytoplasm.
Immunophenotype and genetic features:
Anaplastic large cell lymphoma T (2449)
Anaplastic large cell lymphoma T, CD30 (2189)
Anaplastic large cell lymphoma T (12960)
Anaplastic large cell lymphoma T (6292)
Anaplastic large cell lymphoma T, Ki67 (6264)
Anaplastic large cell lymphoma T:
Anaplastic large cell lymphoma T, HE 40x (2194)
Anaplastic large cell lymphoma T, HE 100x (2450)
Anaplastic large cell lymphoma T, HE 100x (2452)
Anaplastic large cell lymphoma T, CD30 40x (2193)
Another case:
Anaplastic large cell lymphoma T, HE 40x (2192)
Anaplastic large cell lymphoma T, HE 100x (2451)
Another case:
Anaplastic large cell lymphoma T, HE 40x (2190)
Anaplastic large cell lymphoma T, HE 40x (2191)
Anaplastic large cell lymphoma T, HE 100x (2449)
Anaplastic large cell lymphoma T, CD30 40x (2189)
Another case, high positivity for proliferation marker Ki67:
Anaplastic large cell lymphoma T, HE 20x (2790)
Anaplastic large cell lymphoma T, HE 40x (2606)
Anaplastic large cell lymphoma T, HE 40x (2607)
Anaplastic large cell lymphoma T, HE 100x (2599)
Anaplastic large cell lymphoma T, HE 100x (2600)
Anaplastic large cell lymphoma T, HE 100x (2601)
Anaplastic large cell lymphoma T, CD20 40x (2602)
Anaplastic large cell lymphoma T, CD3 40x (2603)
Anaplastic large cell lymphoma T, CD45ro 40x (2605)
Anaplastic large cell lymphoma T, CD30 40x (2604)
Anaplastic large cell lymphoma T, HE 20x (2592)
Anaplastic large cell lymphoma T, HE 40x (2597)
Anaplastic large cell lymphoma T, HE 100x (2591)
Anaplastic large cell lymphoma T, CD20 40x (2593)
Anaplastic large cell lymphoma T, CD3 40x (2594)
Anaplastic large cell lymphoma T, CD30 40x (2595)
Anaplastic large cell lymphoma T, CD30 40x (2596)
Anaplastic large cell lymphoma T, Ki67 40x (2598)
Anaplastic large cell T lymphoma, convoluted nuclei:
Anaplastic large cell lymphoma T (ALCL T), HE 60x (12789)
Anaplastic large cell T lymphoma, convoluted nuclei:
Anaplastic large cell lymphoma T (ALCL T), HE 60x (12790)
Anaplastic large cell T lymphoma, convoluted nuclei, CD30+:
Anaplastic large cell T lymphoma, CD30 positive, HE 60x (12959)
Anaplastic large cell T lymphoma, CD30 positive, HE 40x (12958)
Anaplastic large cell T lymphoma, convoluted nuclei, CD30+:
Anaplastic large cell T lymphoma, CD30 positive, HE 60x (12960)
Anaplastic large cell T lymphoma, convoluted nuclei:
Anaplastic large cell lymphoma T (ALCL T), HE 40x (12855)
Anaplastic T cell lymphoma:
Anaplastic T cell lymphoma, HE 60x (12792)
Anaplastic T cell lymphoma:
Anaplastic T cell lymphoma, HE 60x (12793)
Another case:
Anaplastic large T cell lymphoma, CD30+, HE 40x (10907)
Anaplastic large T cell lymphoma, CD30+, CD3 40x (10905)
Anaplastic large T cell lymphoma, CD30+, CD30 40x (10906)
Anaplastic large T cell lymphoma, CD30+, Ki67 40x (10908)
CD30+, large T cell lymphoma:
Anaplastic large cell lymphoma T, HE 40x (3497)
Anaplastic large cell lymphoma T, CD3 40x (3495)
Anaplastic large cell lymphoma T, CD20 20x (3493)
Anaplastic large cell lymphoma T, CD30 40x (3496)
Anaplastic large cell lymphoma T, Ki67 20x (3494)
Another case of CD30 positive large T cell lymphoma:
Anaplastic large cell lymphoma T, HE 20x (4135)
Anaplastic large cell lymphoma T, HE 40x (4138)
Anaplastic large cell lymphoma T, CD3 40x (4136)
Anaplastic large cell lymphoma T, CD30 40x (4137)
Anaplastic large cell lymphoma T, Ki67 40x (4139)
Another case of CD30 positive large T cell lymphoma:
Anaplastic large cell lymphoma T (ALCL T), HE 20x (4202)
Another case of anaplastic large cell T lymphoma (forearm):
Anaplastic large T cell lymphoma, HE 20x (5010)
Another case of anaplastic large cell T lymphoma:
Anaplastic large T cell lymphoma, HE 20x (6167)
Another case of anaplastic large cell T lymphoma:
Anaplastic large cell lymphoma T (ALCL T), HE 20x (14217)
Anaplastic large cell lymphoma T (ALCL T), HE 60x (14218)
Anaplastic large cell lymphoma T (ALCL T), CD20 20x (14216)
Anaplastic large cell lymphoma T (ALCL T), CD30 20x (14215)
Anaplastic large cell T lymphoma, CD30+, 9 year old boy:
Anaplastic large cell lymphoma T (ALCL T), HE 60x (6253)
Anaplastic large cell lymphoma T (ALCL T), CD3 40x (6263)
Anaplastic large cell lymphoma T (ALCL T), CD30 40x (6262)
Anaplastic large cell lymphoma T (ALCL T), CD20 40x (6261)
Anaplastic large cell lymphoma T (ALCL T), Ki67 40x (6264)
Anaplastic large cell T lymphoma, CD30+:
Anaplastic large cell T lymphoma, CD30+, HE 60x (6292)
Anaplastic large cell T lymphoma, CD30+, CD30 40x (6289)
Anaplastic large cell T lymphoma, CD30+, granzyme 40x (6290)
Anaplastic large cell T lymphoma, CD30+, perforin 40x (6291)
Anaplastic large cell T lymphoma, CD30+:
Large cell anaplastic T lymphoma, CD30+, HE 60x (14103)
Large cell anaplastic T lymphoma, CD30+, CD3 20x (14102)
Large cell anaplastic T lymphoma, CD30+, CD20 20x (14100)
Large cell anaplastic T lymphoma, CD30+, CD30 20x (14101)
Large cell anaplastic T lymphoma, CD30+, AE13 20x (14099)
Anaplastic large cell T lymphoma (TdT positive?, unusual):
ALL T, HE 40x (10124)
ALL T, CD3 40x (10122)
ALL T, TdT 40x (10126)
ALL T, CD20 40x (10121)
ALL T, CD79a 40x (10123)
ALL T, Ki67 40x (10125)