Ovary, Disgerminoma 👉 Most common malignant ovarian germ cell tumor 👉 female counterpart to testicular seminoma 👉 Histologic hallmarks : 🔹Characteristic appearance of nests of large, uniform polygonal cells with distinct cell membranes imparting an alveolar pattern 🔹Areas

Typical hibernoma 👉Rare, benign, adipocytic tumor composed of variable proportions of brown fat cells admixed with white adipose tissue #softtissuepath #pathology #pathX #pathresident #surgpath #surgicalpathology #softtissuepathology

~ Kaposi sarcoma ~ #softtissuepath #pathX #PathResident #surgpath #surgicalpathology #pathology

Organ? Dx? #PathX #PathTwitter

before making Dx of "idiopathic granulomatous orchitis", be sure to rule out: germ cell tumor (usually seminoma), lymphoma (often Hodgkin), sarcoid (Dx of exclusion), and infection (TB, or like in this case of cocci) #GUpath Dx: granulomatous orchitis secondary to coccidiosis

Plasmacytoid urothelial carcinoma 🫒

"I am a retroperitoneal tumor with uncertain origin occurring in a middle-aged man and morphologically looking like an anaplastic large cell lymphoma/ undifferentiated sarcoma. My IHC profile shows positivity for SALL4, OCT3/4, PLAP & D2-40, also excluding a liposarcoma. Who am

Malignant lymphoma, large B cell, diffuse (DLBCL) involving the colonic wall in a 60 years old female. #hempath #pathX #PathResident #surgicalpathology #pathology #surgpath

Typical example of an intravascular papillary endothelial hyperplasia (IPEH), also known as Masson tumor. ~ Benign intravascular endothelial proliferation composed of numerous papillary structures within vascular spaces ~ #softtissuepath #vasculartumors #pathX #PathResident

#GUpath prostate laser enucleation for BPH: worrisome luminal mucin? nah...just #beautyinb9 basal cell hyperplasia (can occasionally have mucin🚨+nucleoli)

!! Extremely rare pitfall : Pseudo DCIS ("DCIS-like") invasive growth pattern seen in an invasive breast carcinoma, NST (invasive ductal carcinoma), grade 2. * last pic shows associated low-grade cribriform DCIS for comparison ** bonus in comments #breastpath #PathX

You can see that the LVI (tumor embolus) is also mimicking a DCIS growth pattern!

Case of the day : M, 68, thigh mass with a nasty rhabdoid morphology. In waiting for the IHC results, first differentials would include melanoma with rhabdomyosarcomatous differentiation or an anaplastic/pleomorphic rhabdomyosarcoma. Opinions? #softtissue #Path #PathX