Adrenal gland

Normal adrenal gland. A parasympathetic ganglion is seen to the left. 

From left to right (outside inwards): Glomerulosa, fasciculata, reticularis, then some medulla, the same in reverse sequence to the right

Predominantly the fat, orange cells of fasciculata

Epidermal nevus

'Nevus' is a hamartoma of any element of skin.  So why not the epidermis itself?

Note the prominent papillomatosis, acanthosis and lamellated keratin

Acute lymphoblastic leukemia

A three year old child with weakness and bleeidng

Bone marrow

More bone marrow

Blasts

PAS

PAS; not the 'block' positivity in the center

MPO

A queer blood picture

CML or CMML?

47 year old man with weakness and splenomegaly for last 7 months. Hb 9.1, WBC 1.2 L, Plt 4.7 lakhs.

Monocytes? Neutrophil precursors

Fragmented nuclei

Ring neutrophils

Florettes

Pseudo Pelger Huet cells

A similar one

Melanocytic lesions

Dermal nevus

Dermal nevus

Compound nevus

Compound nevus

Melanoma of anal canal

Anal melanoma

Dysplastic melanocytes

Dense melanin

HMB45

S100

Sex cord stromal tumor with annular tubules

From a vintage slide

Ovarian stroma with tubules

Calcification

Cysts

Salmonella

Salmonella typhi on Triple Sugar Iron media; glucose fermented, no carbon dioxide, H2S has turned the iron black.